Edgar Filing: PIONEER HIGH INCOME TRUST

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934

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PIONEER DIVERSIFIED HIGH INCOME TRUST
PIONEER FLOATING RATE TRUST
PIONEER HIGH INCOME TRUST
PIONEER MUNICIPAL HIGH INCOME TRUST
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE TRUST
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(Name of Registrant(s) as Specified In Its Charter)

N/A
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PIONEER DIVERSIFIED HIGH INCOME TRUST (HNW)
PIONEER FLOATING RATE TRUST (PHD)
PIONEER HIGH INCOME TRUST (PHT)
PIONEER MUNICIPAL HIGH INCOME TRUST (MHI)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE TRUST (MAV)

60 State Street
Boston, Massachusetts 02109
1-800-622-3265

NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
SCHEDULED FOR SEPTEMBER 22, 2015

This is the formal agenda for your fund's annual meeting of shareholders. It
tells you the matters upon which you will be asked to vote and the time and
place of the meeting, in case you want to attend in person.

To the shareholders of Pioneer Diversified High Income Trust, Pioneer Floating
Rate Trust, Pioneer High Income Trust, Pioneer Municipal High Income Trust and
Pioneer Municipal High Income Advantage Trust:

The annual meeting of shareholders of each of the above registered investment
management companies (each, a "fund" and, collectively, the "funds") will be
held at the offices of Morgan, Lewis & Bockius LLP, One Federal Street, Boston,
Massachusetts 02110, on Tuesday, September 22, 2015 at 2:00 p.m. Eastern time,
to consider the following:

1. To elect five Trustees of your fund, as named in the attached proxy
statement: (i) with respect to each of Pioneer Municipal High Income Trust and
Pioneer Municipal High Income Advantage Trust, four Trustees by the holders of
Common and Preferred Shares voting together as a single class, and one Trustee
by the holders of Preferred Shares voting as a separate class, and (ii) with
respect to each of Pioneer Diversified High Income Trust, Pioneer Floating Rate
Trust and Pioneer High Income Trust, by the holders of Common Shares. Each
elected Trustee will serve for a three-year term or until a successor is
elected.

2. To consider any other business that may properly come before the meeting.

Each fund will hold a separate meeting. Shareholders of each fund will vote
separately.

YOUR TRUSTEES RECOMMEND THAT YOU VOTE IN FAVOR OF ALL PROPOSALS.

Shareholders of record as of the close of business on July 10, 2015 are
entitled to vote at the meeting and any adjournment or postponement thereof.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE MEETING
TO BE HELD ON SEPTEMBER 22, 2015: This Notice and the Proxy Statement are
available on the internet at www.proxyonline.com/docs/pioneerclosedendfunds.

By Order of each Board of Trustees,

Christopher J. Kelley, Secretary

Boston, Massachusetts
August 7, 2015

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WHETHER OR NOT YOU EXPECT TO ATTEND THE MEETING, PLEASE COMPLETE AND
RETURN THE ENCLOSED PROXY.

PROXY STATEMENT OF
PIONEER DIVERSIFIED HIGH INCOME TRUST (HNW)
PIONEER FLOATING RATE TRUST (PHD)
PIONEER HIGH INCOME TRUST (PHT)
PIONEER MUNICIPAL HIGH INCOME TRUST (MHI)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE TRUST (MAV)

60 State Street
Boston, Massachusetts 02109
1-800-622-3265

ANNUAL MEETING OF SHAREHOLDERS

This proxy statement contains the information you should know before voting on
the proposal summarized below.

Each fund will furnish without charge a copy of its most recent annual report
and any more recent semi-annual report to any shareholder upon request.
Shareholders who want to obtain a copy of a fund's reports should direct all
written requests to the attention of the fund, at the address listed above, or
should call Pioneer Investment Management Shareholder Services, Inc. ("PIMSS")
at 1-800-622-3265.

INTRODUCTION

This proxy statement is being used by the Board of Trustees of each fund to
solicit proxies to be voted at the annual meeting of shareholders of each fund
referenced above. Participating in the meeting are holders of common shares of
beneficial interest (the "Common Shares") of each fund and the holders of
preferred shares of beneficial interest (the "Preferred Shares") of Pioneer
Municipal High Income Trust and Pioneer Municipal High Income Advantage Trust.
Each meeting will be held at the offices of Morgan, Lewis & Bockius LLP, One
Federal Street, Boston, Massachusetts 02110, at 2:00 p.m., Eastern time, on
Tuesday, September 22, 2015, and at any adjournments or postponements of a
meeting to a later date, for the purposes as set forth in the accompanying
notice of annual meeting of shareholders. You may call PIMSS at 1-800-622-3265
for information on how to obtain directions to be able to attend the meeting
and vote in person.

This proxy statement and the enclosed proxy card are being mailed to
shareholders of each fund on or about August 7, 2015. The annual report for
each fund for its most recently completed fiscal year previously was mailed to
shareholders.

WHO IS ELIGIBLE TO VOTE

Shareholders of record of each fund as of the close of business on July 10,
2015 (the "record date") are entitled to vote on all of the fund's business at
the annual shareholder meeting and any adjournments or postponements thereof.
Each whole share shall be entitled to one vote and each fractional share shall
be entitled to a proportionate fractional

vote. Shares represented by properly executed proxies, unless revoked before or
at the meeting, will be voted according to the shareholder's instructions. If
you sign a proxy card but do not fill in a vote, your shares will be voted FOR
each of the nominees for Trustee in Proposal 1. If any other business properly
comes before the annual shareholder meeting, your shares will be voted at the
discretion of the persons named as proxies.

Shareholders of each fund will only vote on proposals relating to their fund.

PROPOSAL 1

ELECTION OF BOARD OF TRUSTEES

Introduction

Shareholders of each fund are being asked to consider the election of Ms.
Jones, Ms. Monchak, Mr. Perna, Ms. Piret and Mr. Ricciardi to the Board of
Trustees of the fund.

Mr. Perna, Ms. Piret and Mr. Ricciardi stand for election as their terms expire
in 2015. Each of Mr. Perna, Ms. Piret and Mr. Ricciardi currently serve as a
Trustee of each fund and has served in that capacity continuously since
originally elected or appointed. Mr. Perna has served as a Trustee since 2006
and was most recently elected by shareholders in 2012. Ms. Piret has served as
a Trustee since 2002 and was most recently elected by shareholders in 2012. Mr.
Ricciardi was appointed as a Trustee in 2014 and has not been elected by
shareholders. If elected, each of Mr. Perna, Ms. Piret and Mr. Ricciardi shall
hold office for a three-year term and until his or her successor is elected and
qualified.

Shareholders of each fund are also being asked to consider the election of Ms.
Jones and Ms. Monchak. Ms. Jones was appointed as a Trustee in 2014 to a term
that expires in 2016, and has not been elected by shareholders. Ms. Monchak is
not currently a Trustee of any of the funds but has served as a non-voting
advisory Trustee of each fund since 2014. Shareholders are being asked to
consider the election of Ms. Jones and Ms. Monchak so that shareholders will
have elected all of the Trustees of the funds. If elected, each of Ms. Jones
and Ms. Monchak shall hold office for a term expiring in 2016, according to
their class designations and until her successor is elected and qualified.

Each nominee has consented to being named in this proxy statement and indicated
his or her willingness to serve if elected. In the unanticipated event that any
nominee should be unable to serve, the persons named as proxies may vote for
such other person as shall be designated by the fund's Board of Trustees. The
persons named on the accompanying proxy card intend to vote at the meeting
(unless otherwise directed) for the election of Ms. Jones, Ms. Monchak, Mr.
Perna, Ms. Piret and Mr. Ricciardi as Trustees of each fund.

Trustee Class Designations and Terms of Office

Each fund's Agreement and Declaration of Trust provides that a majority of the
Trustees shall fix the number of Trustees of the fund and that there shall be
at least one and no more than fifteen Trustees. Each fund currently has eight
Trustees. Effective as of the 2015 annual meeting, the number of Trustees is
increased to nine Trustees.

The Agreement and Declaration of Trust for each fund provides that the Board of
Trustees shall consist of Trustees divided into three classes, each class to
consist, as nearly as may be possible, of one-third of the total number of
trustees constituting the entire Board of Trustees. Pursuant to each fund's
Agreement and Declaration of Trust, each fund's Board of Trustees is divided
into three staggered term classes -- Class I, Class II and Class III.

The Trustees of only one class are elected at each annual meeting so that the
regular term of only one class of Trustees will expire annually and any
particular Trustee stands for election only once in each three-year period.

For each fund, each class of Trustees will stand for election at the conclusion
of its respective three-year term. Such classification may prevent replacement
of a majority of the Trustees for up to a two-year period. Holders of the
Preferred Shares of each fund that has Preferred Shares outstanding are
entitled to elect two trustees of that fund.

Trustee Class Designations and Terms of Office

Currently, the designations and terms of office of each class of Trustees of
each fund are as follows:

Pioneer Diversified High Income Trust

Class I Trustees -- Mr. Friedman, Ms. Graham and Mr. Taubes. Terms
expire in 2017.
Class II Trustees -- Mr. Perna, Ms. Piret and Mr. Ricciardi. Terms expire at
the upcoming 2015 annual meeting. Each Trustee is
nominated for election at the meeting.
Class III Trustee -- Mr. Bock and Ms. Jones. Terms expire in 2016. Ms.
Jones is nominated for election at the upcoming 2015
annual meeting.

Pioneer Floating Rate Trust, Pioneer Municipal High Income Trust and Pioneer
Municipal High Income Advantage Trust

Class I Trustee -- Mr. Bock and Ms. Jones. Terms expire in 2016. Ms.
Jones is nominated for election at the upcoming 2015
annual meeting.
Class II Trustees -- Mr. Friedman, Ms. Graham and Mr. Taubes. Terms
expire in 2017.
Class III Trustees -- Mr. Perna, Ms. Piret and Mr. Ricciardi. Terms expire at
the upcoming 2015 annual meeting. Each Trustee is
nominated for election at the meeting.
Pioneer High Income Trust
Class I Trustees -- Mr. Perna, Ms. Piret and Mr. Ricciardi. Terms expire
at the upcoming 2015 annual meeting. Each Trustee is
nominated for election at the meeting.

Class II Trustee -- Mr. Bock and Ms. Jones. Terms expire in 2016. Ms.
Jones is nominated for election at the upcoming 2015
annual meeting.
Class III Trustees -- Mr. Friedman, Ms. Graham and Mr. Taubes. Terms
expire in 2017.

In addition, Ms. Monchak is nominated for election at the upcoming 2015 annual
meeting as:

-- a Class III Trustee of Pioneer Diversified High Income Trust (term
expiring in 2016);

-- a Class I Trustee of each of Pioneer Floating Rate Trust, Pioneer
Municipal High Income Trust and Pioneer Municipal High Income Advantage Trust
(term expiring in 2016); and

-- a Class II Trustee of Pioneer High Income Trust (term expiring in 2016).

Mr. Bock and Ms. Piret are designated as the Trustees to be elected by the
holders of the Preferred Shares of each fund that has issued Preferred Shares.
As noted above, Ms. Piret's term expires at the upcoming 2015 annual meeting.
Consequently, holders of Preferred Shares of Pioneer Municipal High Income
Trust and Pioneer Municipal High Income Advantage Trust are being asked to vote
as a separate class at the upcoming 2015 annual meeting to elect Ms. Piret.

With respect to Pioneer Municipal High Income Trust and Pioneer Municipal High
Income Advantage Trust the holders of Common Shares and the holders of
Preferred Shares are being asked to vote together as a single class at the
upcoming 2015 annual meeting to elect Mr. Perna, Mr. Ricciardi, Ms. Jones and
Ms. Monchak. With respect to Pioneer Diversified High Income Trust, Pioneer
Floating Rate Trust and Pioneer High Income Trust the holders of Common Shares
are being asked to vote at the upcoming 2015 annual meeting to elect Mr. Perna,
Ms. Piret, Mr. Ricciardi, Ms. Jones and Ms. Monchak.

Information Regarding Nominees and Trustees

The following table sets forth for each nominee and Trustee, his or her
position(s) with each fund, age, address, principal occupation during at least
the past five years and any other board memberships held during at least the
past five years. Trustees who are interested persons of a fund within the
meaning of the Investment Company Act of 1940, as amended (the "1940 Act"), are
referred to as Interested Trustees. Trustees who are not interested persons of
a fund are referred to as Independent Trustees. Each of the Trustees (other
than Ms. Monchak) serves as a Trustee of each of the 52 U.S. registered
investment portfolios for which Pioneer Investment Management, Inc. ("Pioneer")
serves as investment adviser (the "Pioneer Funds"). Ms. Monchak serves as a
non-voting advisory Trustee of the Pioneer Funds. The address for all Trustees
and all officers of each fund is 60 State Street, Boston, Massachusetts 02109.

Name, Age and
Position Held Term of Office and Other Directorships
with the Fund Length of Service Principal Occupation Held by Trustee
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Independent Trustees and Nominees:
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Thomas J. Pioneer Diversified Private investor (2004 -- 2008 Director, Broadridge
Perna (64) High Income Trust: and 2013 -- present); Chairman Financial Solutions, Inc.
Chairman of the Class II Trustee since (2008 -- 2013) and Chief (investor
Board and 2007. Term expires in Executive Officer (2008 -- 2012), communications and
Trustee 2015. Quadriserv, Inc. (technology securities processing
products for securities lending provider for financial
Nominee Pioneer Floating Rate industry); and Senior Executive services industry) (2009 -
Trust: Class III Trustee Vice President, The Bank of New present); Director,
since 2006. Term expires York (financial and securities Quadriserv, Inc. (2005 -
in 2015. services) (1986 -- 2004) 2013); Commissioner,
New Jersey State Civil
Pioneer High Income Service Commission
Trust: Class I Trustee (2011 - present)
since 2006. Term expires
in 2015.

Pioneer Municipal
High Income Trust:
Class III Trustee since
2006. Term expires in
2015.

Pioneer Municipal
High Income
Advantage Trust: Class
III Trustee since 2006.
Term expires in 2015.
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David R. Bock Pioneer Diversified Managing Partner, Federal City Director of New York
(71) High Income Trust: Capital Advisors (corporate Mortgage Trust (publicly-
Trustee Class III Trustee since advisory services company) traded mortgage REIT)
2007. Term expires in (1997 -- 2004 and 2008 -- (2004 - 2009, 2012 -
2016. present); Interim Chief Executive present); Director of The
Officer, Oxford Analytica, Inc. Swiss Helvetia Fund, Inc.
Pioneer Floating Rate (privately held research and (closed-end fund) (2010
Trust: Class I Trustee consulting company) (2010); -- present); Director of
since 2005. Term expires Executive Vice President and Oxford Analytica, Inc.
in 2016. Chief Financial Officer, I-trax, (2008 -- present); and
Inc. (publicly traded health care Director of Enterprise
Pioneer High Income services company) (2004 -- Community Investment,
Trust: Class II Trustee 2007); and Executive Vice Inc. (privately-held
since 2005. Term expires President and Chief Financial affordable housing
in 2016. Officer, Pedestal Inc. (internet- finance company) (1985 -
based mortgage trading 2010)
Pioneer Municipal company) (2000 -- 2002);
High Income Trust: Private Consultant (1995 --
Class I Trustee since 1997); Managing Director,
2005. Term expires in Lehman Brothers (1992 --
2016. Elected by 1995); Executive, The World
Preferred Shares only. Bank (1979 -- 1992)

Pioneer Municipal
High Income
Advantage Trust: Class I
Trustee since 2005. Term
expires in 2016. Elected
by Preferred Shares only.
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Benjamin M. Pioneer Diversified William Joseph Maier Professor Trustee, Mellon
Friedman (70) High Income Trust: of Political Economy, Harvard Institutional Funds
Trustee Class I Trustee since University (1972 - present) Investment Trust and
2008. Term expires in Mellon Institutional Funds
2017. Master Portfolio (oversaw
17 portfolios in fund
Pioneer Floating Rate complex) (1989 - 2008)
Trust: Class II Trustee
since 2008. Term expires
in 2017.

Pioneer High Income
Trust: Class III Trustee
since 2008. Term expires
in 2017.

Pioneer Municipal
High Income Trust:
Class II Trustee since
2008. Term expires in
2017.

Pioneer Municipal
High Income
Advantage Trust: Class
II Trustee since 2008.
Term expires in 2017.
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Margaret B.W. Pioneer Diversified Founding Director, Vice- None
Graham (68) High Income Trust: President and Corporate
Trustee Class I Trustee since Secretary, The Winthrop Group,
2007. Term expires in Inc. (consulting firm) (1982 --
2017. present); Desautels Faculty of
Management, McGill University
Pioneer Floating Rate (1999 -- present); and Manager
Trust: Class II Trustee of Research Operations and
since 2003. Term expires Organizational Learning, Xerox
in 2017. PARC, Xerox's advance research
center (1990-1994)
Pioneer High Income
Trust: Class III Trustee
since 2002. Term expires
in 2017.

Pioneer Municipal
High Income Trust:
Class II Trustee since
2003. Term expires in
2017.

Pioneer Municipal
High Income
Advantage Trust:
Class II Trustee since
2003. Term expires
in 2017.
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Lorraine H. Non-voting Advisory Chief Investment Officer, 1199 None
Monchak (59) Trustee of each of SEIU Funds (healthcare workers
Pioneer Diversified union pension funds) (2001 --
Nominee High Income Trust, present); Vice President --
Pioneer Floating Rate International Investments
Trust, Pioneer High Group, American International
Income Trust, Pioneer Group, Inc. (insurance
Municipal High Income company) (1993 -- 2001); Vice
Trust and Pioneer President Corporate Finance and
Municipal High Income Treasury Group, Citibank,
Advantage Trust since N.A.(1980 -- 1986 and 1990 --
2014. 1993); Vice President --
Asset/Liability Management
Group, Federal Farm Funding
Corporation (government-
sponsored issuer of debt
securities) (1988 -- 1990);
Mortgage Strategies Group,
Shearson Lehman Hutton, Inc.
(investment bank) (1987 --
1988); Mortgage Strategies
Group, Drexel Burnham
Lambert, Ltd. (investment bank)
(1986 -- 1987)
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Marguerite A. Pioneer Diversified President and Chief Executive Director of New America
Piret (67) High Income Trust: Officer, Newbury, Piret & High Income Fund, Inc.
Trustee Class II Trustee since Company, Inc. (investment (closed-end investment
2007. Term expires banking firm) (1981 -- present) company) (2004 --
Nominee in 2015. present); Member, Board
of Governors,
Pioneer Floating Rate Investment Company
Trust: Class III Trustee Institute (2000 - 2006)
since 2003. Term expires
in 2015.

Pioneer High Income
Trust: Class I Trustee
since 2002. Term expires
in 2015.

Pioneer Municipal
High Income Trust:
Class III Trustee since
2003. Term expires in
2015. Elected by
Preferred Shares only.

Pioneer Municipal
High Income
Advantage Trust:
Class III Trustee since
2003. Term expires in
2015. Elected by
Preferred Shares only.
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Fred J. Pioneer Diversified Consultant (investment None
Ricciardi (68) High Income Trust: company services) (2012 --
Trustee Class II Trustee since present); Executive Vice
2014. Term expires in President, BNY Mellon (financial
Nominee 2015. and investment company
Pioneer Floating Rate services) (1969 -- 2012);
Trust: Class III Trustee Director, BNY International
since 2014. Term expires Financing Corp. (financial
in 2015. services) (2002 -- 2012);
Director, Mellon Overseas
Pioneer High Income Investment Corp. (financial
Trust: Class I Trustee services) (2009 -- 2012)
since 2014. Term expires
in 2015.

Pioneer Municipal
High Income Trust:
Class III Trustee since
2014. Term expires in
2015.

Pioneer Municipal
High Income
Advantage Trust:
Class III Trustee since
2014. Term expires in
2015.
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Name, Age and
Position Held Term of Office and Other Directorships
with the Fund Length of Service Principal Occupation Held by Trustee
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Interested Trustees and Nominee*:
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Lisa M. Jones Pioneer Diversified Chair, Director, CEO and None
(53)* High Income Trust: President of Pioneer Investment
Trustee, Class III Trustee since Management USA Inc. ("PIM-
President and 2014. Term expires in USA") (since September 2014);
Chief Executive 2016. Chair, Director and CEO of
Officer Pioneer Investment
Pioneer Floating Rate Management, Inc. ("Pioneer")
Nominee Trust: Class I Trustee (since September 2014); Chair,
since 2014. Term expires Director and CEO of Pioneer
in 2016. Funds Distributor, Inc. (since
September 2014); Chair,
Pioneer High Income Director, CEO and President of
Trust: Class II Trustee Pioneer Institutional Asset
since 2014. Term expires Management, Inc. (since
in 2016. September 2014); and Chair,
Director, CEO and President of
Pioneer Municipal Pioneer Investment
High Income Trust: Management Shareholder
Class I Trustee since Services, Inc. (since September
2014. Term expires in 2014); Managing Director,
2016. Morgan Stanley Investment
Management (2010 -- 2013);
Pioneer Municipal Director of Institutional
High Income Business, CEO of International,
Advantage Trust: Class I Eaton Vance Management
Trustee since 2014. Term (2005 -- 2010)
expires in 2016.
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Name, Age and
Position Held Term of Office and Other Directorships
with the Fund Length of Service Principal Occupation Held by Trustee
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Interested Trustees and Nominee*:
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Kenneth J. Pioneer Diversified Director and Executive Vice None
Taubes (57)* High Income Trust: President (since 2008) and
Trustee Class I Trustee since Chief Investment Officer, U.S.
2014. Term expires in (since 2010) of PIM-USA;
2017. Executive Vice President and
Pioneer Floating Rate Chief Investment Officer, U.S. of
Trust: Class II Trustee Pioneer (since 2008); Executive
since 2014. Term expires Vice President of Pioneer
in 2017. Institutional Asset
Management, Inc. (since 2009);
Pioneer High Income Portfolio Manager of Pioneer
Trust: Class III Trustee (since 1999)
since 2014. Term expires
in 2017.

Pioneer Municipal
High Income Trust:
Class II Trustee since
2014. Term expires in
2017.
Pioneer Municipal
High Income
Advantage Trust:
Class II Trustee since
2014. Term expires in
2017.
-----------------------------------------------------------------------------------------------------

* Ms. Jones and Mr. Taubes are Interested Trustees because they are an
officer or director of each fund's investment adviser and certain of its
affiliates.

Responsibilities of the Board of Trustees

The Board of Trustees is responsible for overseeing each fund's management and
operations. The Chairman of the Board is an Independent Trustee. Independent
Trustees constitute at least 75% of the Board.

During each fund's most recent fiscal year, the Board of Trustees held 7
meetings. All of the current Trustees and committee members of each fund then
serving attended at least 75% of the meetings of the Board of Trustees and
applicable committees, if any, held during that fund's fiscal year.

The funds do not have a policy on Trustee attendance at the annual meeting of
shareholders. No Trustees attended the 2014 annual meeting of shareholders.

The Trustees were selected or nominated to join the Board based upon the
following as to each Board member: such person's character and integrity; such
person's willingness and ability to commit the time necessary to perform the
duties of a Trustee; as to each Independent Trustee, his or her status as not
being an "interested person" as defined under the 1940 Act; and, as to Ms.
Jones and Mr. Taubes, their association with Pioneer. Each of the Independent
Trustees also was selected to join the Board based on the criteria and
principles set forth in the Nominating Committee Charter. In addition to
individual attributes, the value of diversity is considered. In evaluating a
Trustee's prospective service on the Board, the Trustee's experience in, and
ongoing contributions toward, overseeing the fund's business as a Trustee also
are considered. In addition, the following specific experience, qualifications,
attributes and/or skills apply as to each Trustee: Mr. Bock, accounting,
financial, business and public company experience as a chief financial officer
and an executive officer and experience as a board member of other
organizations; Mr. Friedman, academic leadership, economic and finance
experience and investment company board experience; Ms. Graham, academic
leadership, experience in business, finance and management consulting; Ms.
Monchak, investment, financial and business experience, including as the chief
investment officer of a pension fund; Mr. Perna, accounting, financial, and
business experience as an executive officer and experience as a board member of
other organizations; Ms. Piret, accounting, financial and entrepreneurial
experience as an executive, valuation experience and investment company board
experience; Mr. Ricciardi, financial, business and investment company
experience as an executive officer of a financial and investment company
services organization, and experience as a board member of offshore investment
companies and other organizations; Ms. Jones, investment management experience
as an executive and leadership roles with Pioneer and its affiliates; and Mr.
Taubes, portfolio management experience and leadership roles with Pioneer.
However, in its periodic assessment of the effectiveness of the Board, the
Board considers the complementary skills and experience of individual Trustees
primarily in the broader context of the Board's overall composition so that the
Board, as a body, possesses the appropriate (and appropriately diverse) skills
and experience to oversee the business of the funds.

Each fund's Agreement and Declaration of Trust provides that the appointment,
designation (including in any proxy or registration statement or other
document) of a Trustee as an expert on any topic or in any area, or as having
experience, attributes or skills in any area, or any other appointment,
designation or identification, shall not impose on that person any standard of
care or liability that is greater than that imposed on that person as a Trustee
in the absence of the appointment, designation or identification, and no
Trustee who has special attributes, skills, experience or expertise, or is
appointed, designated, or identified as aforesaid, shall be held to a higher
standard of care by virtue thereof.

Board Committees

The Board of Trustees has five standing committees : the Independent Trustees
Committee, the Audit Committee, the Governance and Nominating Committee, the
Policy Administration Committee and the Valuation Committee. Each committee is
chaired by an Independent Trustee and all members of each committee are
Independent Trustees.

The Chairs of the committees work with the Chairman of the Board and fund
management in setting the agendas for Board meetings. The Chairs of the
committees set the agendas for committee meetings with input from fund
management. As noted below, through the committees, the Independent Trustees
consider and address important matters involving the funds, including those
presenting conflicts or potential conflicts of interest for management. The
Independent Trustees also regularly meet without the presence of management and
are advised by independent legal counsel. The Board has determined that
delegation to the committees of specified oversight responsibilities helps
ensure that the funds have effective and independent governance and oversight.
Notwithstanding the fact that the Chairman of the Board is an Independent
Trustee, the Board continues to believe that the committee structure enables
the Board more effectively to provide governance and oversight of the funds'
affairs. Mr. Perna, Chairman of the Board, is a member of each committee except
the Audit Committee and the Valuation Committee, of each of which he is a
non-voting, ex-officio member.

During the most recent fiscal year for each fund, the Audit, Governance and
Nominating, Independent Trustees, Policy Administration and Valuation
Committees of each fund held the following meetings:

Pioneer
Pioneer Pioneer Pioneer Pioneer Municipal
Diversified Floating High Municipal High Income
High Income Rate Income High Income Advantage
Trust Trust Trust Trust Trust
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Audit Committee 9 10 8 9 8
Governance and
Nominating Committee 1 2 1 1 1
Independent Trustees
Committee 9 10 9 9 9
Policy Administration
Committee 4 4 4 4 4
Valuation Committee 5 6 5 5 5

Independent Trustees Committee: David R. Bock, Benjamin M. Friedman, Margaret
B.W. Graham, Thomas J. Perna (Chair), Marguerite A. Piret and Fred J.
Ricciardi.

The Independent Trustees Committee is comprised of all of the Independent
Trustees. The Independent Trustees Committee serves as the forum for
consideration of a number of issues required to be considered separately by the
Independent Trustees under the 1940 Act, including the assessment and review of
each fund's advisory agreement and other

related party contracts. The Independent Trustees Committee also considers
issues that the Independent Trustees believe it is advisable for them to
consider separately from the Interested Trustees.

Audit Committee: David R. Bock (Chair), Benjamin M. Friedman and Marguerite A.
Piret. Lorraine H. Monchak currently serves as a non-voting member of the Audit
Committee.

Each fund's Audit Committee is comprised of only Independent Trustees who are
"independent" as defined in the applicable New York Stock Exchange ("NYSE") and
NYSE MKT listing standards relating to closed-end funds. The Board of Trustees
of each fund has adopted a charter for the Audit Committee. In accordance with
its charter, the purposes of the Audit Committee are to:

o Assist the Board of Trustees' oversight and monitoring of: (i) the
integrity of the fund's financial statements; (ii) the fund's
compliance with legal and regulatory requirements; (iii) the
independent registered public accounting firm's qualifications,
performance and independence; and (iv) the performance of the fund's
internal audit function; and

o Prepare the disclosure required by Item 407(d)(3)(i) of Regulation S-K
to be included in the fund's annual proxy statement and other filings.

The Audit Committee charter is available on Pioneer's website:
www.pioneerinvestments.com. You also can obtain a copy by sending a written
request to your fund at the address listed on this proxy statement.

Each fund's Board of Trustees has determined that the fund has at least one
audit committee financial expert serving on its Audit Committee. Ms. Piret, an
Independent Trustee, serves on each Audit Committee and has been determined to
be an audit committee financial expert.

Audit Committee Report

The Audit Committee reports that it has (1) reviewed and discussed each fund's
audited financial statements with management; (2) discussed with the
independent registered public accounting firm the matters required to be
discussed with the independent auditors by the Statement of Auditing Standards
No. 61, as amended, as adopted by the Public Company Accounting Oversight Board
in Rule 3200 T; and (3) received written disclosures and an independence letter
from the independent registered public accounting firm required by Independence
Standards Board Standard No. 1, as adopted by the Public Company Accounting
Oversight Board in Rule 3600 T, and discussed with the independent registered
public accounting firm that firm's independence. Based upon the review and
discussions referred to above, the Audit Committee recommended to the Board of
Trustees that the audited financial statements be included in the Annual Report
for Pioneer Floating Rate Trust for the fiscal year ended November 30, 2014,
the Annual Reports for Pioneer High Income Trust and Pioneer Municipal High
Income Advantage Trust for the fiscal year ended March 31, 2015 and in the
Annual Reports for Pioneer Diversified High Income Trust and Pioneer Municipal
High Income Trust for the fiscal year ended April 30, 2015.

The members of each fund's Audit Committee are:

David R. Bock (Chair)
Benjamin M. Friedman
Marguerite A. Piret
Lorraine H. Monchak currently serves as a non-voting member of the Audit
Committee.

Governance and Nominating Committee: Margaret B.W. Graham (Chair) and Thomas J.
Perna.

All members of the Governance and Nominating Committee are independent under
the applicable NYSE and NYSE MKT listing standards relating to closed-end
funds, and are not "interested persons," as defined in the 1940 Act, of each
fund. The Board of each fund has adopted a written charter for the Governance
and Nominating Committee, which is available on Pioneer's website:
http://us.pioneerinvestments.com. You also can obtain a copy by sending a
written request to your fund at the address listed on this proxy statement.

The Governance and Nominating Committee considers governance matters affecting
the Board and each fund. Among other responsibilities, the Governance and
Nominating Committee reviews the performance of the Independent Trustees as a
whole, and reviews and recommends to the Independent Trustees Committee any
appropriate changes concerning, among other things, the size and composition of
the Board, the Board's committee structure and the Independent Trustees'
compensation. The Governance and Nominating Committee also makes
recommendations to the Independent Trustees Committee or the Board on matters
delegated to it.

In addition, the Governance and Nominating Committee screens potential
candidates for Independent Trustees. Among other responsibilities, the
Governance and Nominating Committee reviews periodically the criteria for
Independent Trustees and the spectrum of desirable experience and expertise for
Independent Trustees as a whole, and reviews periodically the qualifications
and requisite skills of persons currently serving as Independent Trustees and
being considered for re-nomination. The Governance and Nominating Committee
also reviews the qualifications of any person nominated to serve on the Board
by a shareholder or recommended by any Trustee, management or another person
and makes a recommendation as to the qualifications of such nominated or
recommended person to the Independent Trustees and the Board, and reviews
periodically the Committee's procedure, if any, regarding candidates submitted
by shareholders. The Trustees who are not Independent Trustees and the officers
of each fund are nominated and selected by the Board.

The Governance and Nominating Committee does not have specific, minimum
qualifications for nominees, nor has it established specific qualities or
skills that it regards as necessary for one or more of the Independent Trustees
to possess (other than qualities or skills that may be required by applicable
law or regulation). However, in evaluating a person as a potential nominee to
serve as an Independent Trustee, the Governance and Nominating Committee will
consider the following general criteria and principles, among any others that
it may deem relevant: (i) the nominee's reputation for integrity, honesty and
adherence

to high ethical standards; (ii) the nominee's business acumen and ability to
exercise sound judgment in matters that relate to the objectives of the fund
and whether the person is willing and able to contribute positively to the
decision-making process of the fund; (iii) the nominee's commitment and ability
to devote the necessary time and energy to be an effective Independent Trustee,
to understand the fund and the responsibilities of a trustee of an investment
company; (iv) the nominee's ability to understand the sometimes conflicting
interests of the various constituencies of the fund and to act in the interests
of all shareholders; (v) the absence of a conflict of interest that would
impair his or her ability to represent the interests of all shareholders and to
fulfill the responsibilities of a trustee; and (vi) the value of diversity on
the Board. The Governance and Nominating Committee also will consider whether
the nominee has the experience or skills that the Governance and Nominating
Committee believes would maintain or enhance the effectiveness of the
Independent Trustees' oversight of each fund's affairs, based on the then
current composition and skills of the Independent Trustees and experience or
skills that may be appropriate in light of changing business conditions and
regulatory or other developments. The Governance and Nominating Committee does
not necessarily place the same emphasis on each criterion.

The Governance and Nominating Committee does not have a formal procedure for
the implementation, or for assessing the effectiveness, of its policy with
regard to the consideration of the value of diversity on the Board in reviewing
potential nominees for Independent Trustee. However, as noted above, in its
periodic assessment of the effectiveness of the Board, the Board considers the
complementary skills and experience of individual Trustees in the context of
the Board's overall composition so that the Board, as a body, possesses the
appropriate (and appropriately diverse) skills and experience to oversee the
business of the funds. In addition, the Governance and Nomination Committee
Charter provides that nominees shall not be discriminated against on the basis
of race, religion, national origin, sex, sexual orientation, disability or any
other basis proscribed by law.

As long as an existing Independent Trustee continues, in the opinion of the
other Independent Trustees, to satisfy these criteria and continues to make
positive contributions to the Board, each fund anticipates that Independent
Trustees of the fund would favor the re-nomination of an existing Trustee
rather than a new candidate. Consequently, while the Governance and Nominating
Committee will evaluate the qualifications of nominees recommended by
shareholders to serve as Trustee, the Independent Trustees might act upon the
Governance and Nominating Committee's evaluation only if there is a vacancy on
the Board. In the event that a vacancy arises or a change in Board membership
is determined to be advisable, the Governance and Nominating Committee will, in
addition to any shareholder recommendations, evaluate candidates identified by
other means, including candidates proposed by Independent Trustees or
management. While it has not done so in the past, the Governance and Nominating
Committee may retain a consultant to assist the Committee in a search for a
qualified candidate.

Any shareholder recommendation must be submitted in compliance with all of the
pertinent provisions of Regulation 14A under the Securities Exchange Act of
1934, as amended (the "Exchange Act"), and the Agreement and Declaration of
Trust and By laws of the fund to be considered by the Governance and Nominating
Committee. In evaluating a nominee recommended by a shareholder, the Governance
and Nominating Committee, in addition to the criteria discussed above, may
consider the objectives of the shareholder in submitting that nomination and
whether such objectives are consistent with the interests of all shareholders.
If the Board determines to include a shareholder's candidate among the slate of
nominees, the candidate's name will be placed on the fund's proxy card. If the
Governance and Nominating Committee, the Independent Trustees or the Board
determines not to include such candidate among the Board's designated nominees
and the shareholder has satisfied the requirements of Rule 14a-8 under the
Exchange Act, the shareholder's candidate will be treated as a nominee of the
shareholder who originally nominated the candidate.

The Governance and Nominating Committee initiated the recommendation of each of
the non-interested nominees to serve as an Independent Trustee.

With respect to the re-nomination of an existing Independent Trustee, the
Governance and Nominating Committee and the Independent Trustees Committee use
the criteria and the principles set forth above, as revised from time to time,
to guide the selection process.

The Governance and Nominating Committee followed its standard practices in
identifying and recommending Ms. Monchak and Mr. Ricciardi as nominees. The
Chairperson of the Governance and Nominating Committee solicited suggestions
from the Independent Trustees for nominees to the Board who met the criteria
for nominees set forth in the Governance and Nominating Committee charter and
collected biographical information about the persons suggested. The Governance
and Nominating Committee analyzed the experience and capabilities of the
current Board members as a group, in order to identify a skill set and other
characteristics that would be most complementary in new Board members. Each
Governance and Nominating Committee member assessed each candidate as to the
characteristics identified. The Governance and Nominating Committee then
recommended to the Independent Trustees Committee that Ms. Monchak and Mr.
Ricciardi be nominated to serve as Board members and the Independent Trustees
Committee, based on the recommendation of the Governance and Nominating
Committee, nominated Ms. Monchak and Mr. Ricciardi to serve as Board members.

Shareholders may communicate with the members of the Board as a group or
individually. Any such communication should be sent to the Board or an
individual Trustee c/o the Secretary of the fund at the address on the notice
of this meeting. The Secretary may determine not to forward any communication
to members of the Board that does not relate to the business of a fund.

Valuation Committee: David R. Bock, Benjamin M. Friedman and Marguerite A.
Piret (Chair).

The Valuation Committee, among other things, determines with Pioneer the value
of securities under certain circumstances and considers other matters with
respect to the valuation of securities, in each case in accordance with each
fund's valuation procedures.

Policy Administration Committee: Margaret B.W. Graham (Chair), Thomas J. Perna
and Fred J. Ricciardi.

The Policy Administration Committee, among other things, oversees and monitors
each fund's compliance with legal and regulatory requirements that are not
directly related to financial reporting, internal financial controls,
independent audits or the performance of the fund's internal audit function.
The Policy Administration Committee also oversees the adoption and
implementation of certain of the funds' policies and procedures.

Oversight of Risk Management

Consistent with its responsibility for oversight of each fund in the interests
of shareholders, the Board of Trustees oversees risk management of each fund's
investment management and business operations. In performing this oversight
function, the Board considers various risks and risk management practices
relating to the funds. The Board has delegated certain aspects of its risk
oversight responsibilities to the committees.

Each fund faces a number of risks, such as investment risk, counterparty risk,
valuation risk, enterprise risk, reputational risk, cybersecurity risk, risk of
operational failure or lack of business continuity, and legal, compliance and
regulatory risk. The goal of risk management is to identify and address risks,
i.e., events or circumstances that could have material adverse effects on the
business, operations, shareholder services, investment performance or
reputation of a fund.

Most of the funds' investment management and business operations are carried
out by or through Pioneer, its affiliates, and other service providers, each of
which has an independent interest in risk management but whose policies and the
methods by which one or more risk management functions are carried out may
differ from each fund's and each other's in the setting of priorities, the
resources available or the effectiveness of relevant controls.

Under the overall supervision of the Board or the applicable committee of the
Board, each fund, or Pioneer and the affiliates of Pioneer or other service
providers to each fund employ a variety of processes, procedures and controls
in an effort to identify, address and mitigate risks. Different processes,
procedures and controls are employed with respect to different types of risks.
Various personnel, including the funds' and Pioneer's chief compliance officer
and Pioneer's chief risk officer and director of internal audit, as well as
various personnel of Pioneer, and the other service providers, make periodic
reports to the applicable committee or to the Board with respect to various
aspects of risk management. The reports received by the Trustees related to
risks typically are summaries of relevant information. During the course of the
most recent fiscal year, the Trustees increased the number of presentations
from the directors of Internal Audit and Risk Management at Pioneer, as well as
the Chief Operating Officer to whom they report, concerning the results and
process of their responsibilities.

The Trustees recognize that not all risks that may affect a fund can be
identified, that it may not be practical or cost-effective to eliminate or
mitigate certain risks, that it may be necessary to bear certain risks (such as
investment-related risks) to achieve each fund's goals, that the processes,
procedures and controls employed to address certain risks may be limited in
their effectiveness, and that some risks are simply beyond the control of the
funds or Pioneer and its affiliates or other service providers. As a result of
the foregoing and other factors, each fund's ability to manage risk is subject
to substantial limitations.

In addition, it is important to note that each fund is designed for investors
that are prepared to accept investment risk, including the possibility that as
yet unforeseen risks may emerge in the future.

The following table indicates the value of shares that each Trustee or nominee
beneficially owned in each fund and Pioneer Funds in the aggregate as of May
31, 2015. Beneficial ownership is determined in accordance with Securities and
Exchange Commission ("SEC") rules. The share value of any closed-end Pioneer
fund is based on its closing market price on May 31, 2015. The share value of
any open-end Pioneer fund is based on the net asset value of the class of
shares on May 31, 2015. The dollar ranges in this table are in accordance with
SEC requirements.

Aggregate Dollar
Range of Equity
Securities in All
Pioneer Funds
Dollar Range of Overseen or to be
Equity Securities Overseen by
Name of Trustee or Nominee in each Fund Trustee or Nominee
---------------------------------------------------------------------------
INDEPENDENT TRUSTEE or NOMINEE
---------------------------------------------------------------------------
$0(1)
$0(2)
David R. Bock $0(3) Over $100,000
$0(4)
$0(5)
--------------------------------------------------------------------------
$0(1)
$0(2)
Benjamin M. Friedman $0(3) Over $100,000
$0(4)
$0(5)
--------------------------------------------------------------------------
$10,001 to $50,000(1)
$1 to $10,000(2)
Margaret B. W. Graham $1 to $10,000(3) Over $100,000
$0(4)
$0(5)
--------------------------------------------------------------------------
$0(1)
$0(2)
Lorraine H. Monchak $0(3) Over $100,000
$0(4)
$0(5)
--------------------------------------------------------------------------
$0(1)
$0(2)
Thomas J. Perna $0(3) Over $100,000
$0(4)
$0(5)
--------------------------------------------------------------------------
$0(1)
$0(2)
Marguerite A. Piret $0(3) Over $100,000
$0(4)
$0(5)
--------------------------------------------------------------------------

(1) Shares held in Pioneer High Income Trust

(2) Shares held in Pioneer Municipal High Income Trust

(3) Shares held in Pioneer Municipal High Income Advantage Trust

(4) Shares held in Pioneer Floating Rate Trust

(5) Shares held in Pioneer Diversified High Income Trust

As of December 31, 2014, the Trustees, any nominee for election as a Trustee
and the officers of each fund owned beneficially in the aggregate less than 1%
of the outstanding shares of each fund.

For each of the funds, during the most recent fiscal year, none of the Trustees
or any nominee for election as a Trustee engaged in the purchase or sale of
securities of Pioneer, UniCredit S.p.A. or any other entity in a control
relationship to Pioneer or Pioneer Funds Distributor, Inc. ("PFD").

Compliance with Section 16(a) Reporting Requirements

Section 16(a) of the Exchange Act requires each fund's executive officers,
Trustees and persons who own more than ten percent of a fund's shares ("10%
Shareholders") to file reports of ownership and changes in ownership with the
SEC. Executive officers, Trustees and 10% Shareholders are required by SEC
regulations to furnish the fund with copies of all Section 16(a) forms they
file. Section 30(h) of the 1940 Act extends the reporting requirements under
Section 16(a) of the Exchange Act to certain officers of the fund's investment
adviser. Based solely on a review of the copies of these reports furnished to
each of the funds and representations that no other reports were required to be
filed, each fund believes that during the past fiscal year the filing
requirements applicable to such persons were met.

Executive officers

In addition to Ms. Jones, who serves as the President and Chief Executive
Officer of each fund, the following table provides information with respect to
the other executive officers of the funds. Each executive officer is elected by
the Board of Trustees and serves until his or her successor is chosen and
qualified or until his or her resignation or removal by the Board. The business
address of all officers of the funds is 60 State Street, Boston, Massachusetts
02109.

-----------------------------------------------------------------------------------------
Name, age and position with each fund Principal occupation(s)
-----------------------------------------------------------------------------------------

Christopher J. Kelley Vice President and Associate General Counsel of
(50) Pioneer since January 2008 and Secretary and
Secretary and Chief Legal Officer Chief Legal Officer of all of the Pioneer Funds
since June 2010; Assistant Secretary of all of the
Pioneer Funds from September 2003 to May
2010; Vice President and Senior Counsel of
Pioneer from July 2002 to December 2007
-----------------------------------------------------------------------------------------
Carol B. Hannigan Fund Governance Director of Pioneer since
(54) December 2006 and Assistant Secretary of all the
Assistant Secretary Pioneer Funds since June 2010; Manager-Fund
Governance of Pioneer from December 2003 to
November 2006; Senior Paralegal of Pioneer
from January 2000 to November 2003
-----------------------------------------------------------------------------------------
Thomas Reyes Senior Counsel of Pioneer since May 2013 and
(52) Assistant Secretary of all the Pioneer Funds since
Assistant Secretary June 2010; Counsel of Pioneer from June 2007
to May 2013; Vice President and Counsel at State
Street Bank from October 2004 to June 2007
-----------------------------------------------------------------------------------------
Mark E. Bradley Vice President -- Fund Treasury of Pioneer; and
(55) Treasurer of all of the Pioneer Funds since March
Treasurer 2008; Deputy Treasurer of Pioneer from March
2004 to February 2008; and Assistant Treasurer
of all of the Pioneer Funds from March 2004 to
February 2008
-----------------------------------------------------------------------------------------
Luis I. Presutti Director -- Fund Treasury of Pioneer; and
(50) Assistant Treasurer of all of the Pioneer Funds
Assistant Treasurer
-----------------------------------------------------------------------------------------
Gary Sullivan Fund Accounting Manager -- Fund Treasury of
(57) Pioneer; and Assistant Treasurer of all of the
Assistant Treasurer Pioneer Funds
-----------------------------------------------------------------------------------------
David F. Johnson Fund Administration Manager -- Fund Treasury of
(35) Pioneer since November 2008; Assistant
Assistant Treasurer Treasurer of all of the Pioneer Funds since
January 2009; Client Service Manager --
Institutional Investor Services at State Street
Bank from March 2003 to March 2007
-----------------------------------------------------------------------------------------

Jean M. Bradley Chief Compliance Officer of Pioneer and of all the
(62) Pioneer Funds since March 2010; Chief
Chief Compliance Officer Compliance Officer of Pioneer Institutional Asset
Management, Inc. since January 2012; Chief
Compliance Officer of Vanderbilt Capital
Advisors, LLC since July 2012: Director of
Adviser and Portfolio Compliance at Pioneer
since October 2005; Senior Compliance Officer
for Columbia Management Advisers, Inc. from
October 2003 to October 2005
----------------------------------------------------------------------------------------
Kelly K. O'Donnell Vice President -- Head of PIMSS since September
(44) 2014 and Anti-Money Laundering Officer of all
Anti-Money Laundering Officer the Pioneer funds since 2006; Vice President of
Compliance, PIMSS from April 2013 to
September 2014; Director of Compliance, PIMSS
from October 2004 to April 2013
----------------------------------------------------------------------------------------

Compensation of Trustees and officers

The following table sets forth certain information with respect to the
compensation of each Trustee of Pioneer High Income Trust and Pioneer Municipal
High Income Advantage Trust for the fiscal year ended March 31, 2015. The
amounts paid to the Trustees by each fund differ due to (i) membership on or
chairing certain committees of the Board of Trustees and other responsibilities
assigned to specific Trustees, and (ii) attendance at meetings. Each fund does
not pay any salary or other compensation to its officers.

Pioneer High Income Trust and Pioneer Municipal High Income Advantage Trust:

Pension or
Retirement Total
Benefits Compensation
Aggregate Accrued as from the Fund
Compensation Part of and Other
Name of Trustee(1) from each Fund Fund Expenses Pioneer Funds(2)
------------------------------------------------------------------------
Interested Trustees:
------------------------------------------------------------------------
Lisa M. Jones(3) $0.00* $0.00 $0.00
$0.00**
------------------------------------------------------------------------
Kenneth J. Taubes $0.00* $0.00 $0.00
$0.00**
------------------------------------------------------------------------
Independent Trustees:
------------------------------------------------------------------------
David R. Bock $2,896.29* $0.00 $262,250.00
$2,260.61**
------------------------------------------------------------------------
Benjamin M. Friedman $2,877.83* $0.00 $260,000.00
$2,246.44**
------------------------------------------------------------------------
Margaret B.W. Graham $2,778.50* $0.00 $249,500.00
$2,190.61**
------------------------------------------------------------------------

(1) Ms. Lorraine H. Monchak, a non-voting Advisory Trustee of the fund,
received aggregate compensation in the amount of $996.61 and $864.53 from
Pioneer High Income Trust and Pioneer Municipal High Income Advantage
Trust, respectively, pension or retirement benefits accrued as part of
portfolio expenses of $0.00, and total compensation from the fund and the
other Pioneer Funds in the amount of $90,792.00 for the fiscal year ended
March 31, 2015.

(2) As of the fiscal year ended March 31, 2015, there were 52 U.S. registered
investment portfolios in the Pioneer Funds.

(3) Appointed as a Trustee on September 16, 2014.

(4) Appointed as a Trustee on November 10, 2014.

* Aggregate compensation from Pioneer High Income Trust.

** Aggregate compensation from Pioneer Municipal High Income Advantage Trust.

The following table sets forth certain information with respect to the
compensation of each Trustee of Pioneer Diversified High Income Trust and
Pioneer Municipal High Income Trust for the fiscal year ended April 30, 2015.
The amounts paid to the Trustees differ due to (i) membership on or chairing
certain committees of the boards of Trustees and other responsibilities
assigned to specific Trustees, and (ii) attendance at meetings. The fund does
not pay any salary or other compensation to its officers.

Pioneer Diversified High Income Trust and Pioneer Municipal High Income Trust:

Pension or
Retirement Total
Benefits Compensation
Aggregate Accrued as from the Fund
Compensation Part of and Other
Name of Trustee(1) from each Fund Fund Expenses Pioneer Funds(2)
--------------------------------------------------------------------
Interested Trustees:
------------------------------------------------------------------
Lisa M. Jones(3) $0.00* $0.00 $0.00
$0.00**
------------------------------------------------------------------
Kenneth J. Taubes $0.00* $0.00 $0.00
$0.00**
------------------------------------------------------------------
Independent Trustees:
------------------------------------------------------------------
David R. Bock $1,000.00* $0.00 $262,250.00
$2,012.11**
------------------------------------------------------------------
Benjamin M. Friedman $1,000.00* $0.00 $260,000.00
$2,000.90**
------------------------------------------------------------------
Margaret B.W. Graham $1,000.00* $0.00 $249,500.00
$1,954.76**
------------------------------------------------------------------
Thomas J. Perna $1,000.00* $0.00 $296,667.00
$2,177.83**
------------------------------------------------------------------
Marguerite A. Piret $1,000.00* $0.00 $250,750.00
$1,957.08**
------------------------------------------------------------------
Fred J. Ricciardi(4) $416.67* $0.00 $86,292.00
$747.22**
------------------------------------------------------------------

(1) Ms. Lorraine H. Monchak, a non-voting Advisory Trustee of the fund,
received aggregate compensation in the amount of $416.67 and $770.01 from
Pioneer Diversified High Income Trust and Pioneer Municipal High Income
Trust, respectively, pension or retirement benefits accrued as part of
portfolio expenses of $0.00, and total compensation from the fund and the
other Pioneer Funds in the amount of $90,792.00 for the fiscal year ended
April 30, 2015.

(2) As of the fiscal year ended April 30, 2015, there were 52 U.S. registered
investment portfolios in the Pioneer Funds.

(3) Appointed as a Trustee on September 16, 2014.

(4) Appointed as a Trustee on November 10, 2014.

* Aggregate compensation from Pioneer Diversified High Income Trust.

** Aggregate compensation from Pioneer Municipal High Income Trust.

The following table sets forth certain information with respect to the
compensation of each Trustee of Pioneer Floating Rate Trust for the fiscal year
ended November 30, 2014. The amounts paid to the Trustees differ due to (i)
membership on or chairing certain committees of the boards of Trustees and
other responsibilities assigned to specific Trustees, and (ii) attendance at
meetings. The fund does not pay any salary or other compensation to its
officers.

Pioneer Floating Rate Trust:
Pension or
Retirement Total
Benefits Compensation
Aggregate Accrued as from the Fund
Compensation Part of and Other
Name of Trustee(1) from Fund Fund Expenses Pioneer Funds(2)
------------------------------------------------------------------------
Interested Trustees:
------------------------------------------------------------------------
Lisa M. Jones(3) $0.00 $0.00 $0.00
------------------------------------------------------------------------
Kenneth J. Taubes $0.00 $0.00 $0.00
------------------------------------------------------------------------
Independent Trustees:
------------------------------------------------------------------------
David R. Bock $2,592.09 $0.00 $262,125.00
------------------------------------------------------------------------
Benjamin M. Friedman $2,530.70 $0.00 $254,688.00
------------------------------------------------------------------------
Margaret B.W. Graham $2,300.02 $0.00 $224,313.00
------------------------------------------------------------------------
Thomas J. Perna $2,816.54 $0.00 $291,813.00
------------------------------------------------------------------------
Marguerite A. Piret $2,486.34 $0.00 $248,437.00
------------------------------------------------------------------------
Fred J. Ricciardi(4) $0.00 $0.00 $0.00
------------------------------------------------------------------------

(1) Ms. Lorraine H. Monchak, a non-voting Advisory Trustee of the fund, did not
receive compensation from the fund for the fiscal year ended November 30,
2014.

(2) As of the fiscal year ended November 30, 2014, there were 52 U.S.
registered investment portfolios in the Pioneer Funds.

(3) Appointed as a Trustee on September 16, 2014.

(4) Appointed as a Trustee on November 10, 2014.

Investment adviser and administrator

Pioneer (the "Adviser"), whose executive offices are located at 60 State
Street, Boston, Massachusetts 02109, serves as investment adviser and
administrator to each fund.

Pioneer is currently an indirect, wholly-owned subsidiary of UniCredit S.p.A.
("UniCredit"). On April 23, 2015, UniCredit announced that it signed a
preliminary and exclusive agreement with Banco Santander and affiliates of
Warburg Pincus and General Atlantic (the "Private Equity Firms") with respect
to Pioneer and Santander Asset Management ("SAM") (the "Transaction").

The Transaction, as described in the UniCredit announcement, will entail the
establishment of a holding company, with the name Pioneer Investments, to be
owned by UniCredit (50%) and the Private Equity Firms (50% between them). The
holding company will control Pioneer's U.S. operations, including the Adviser.
The holding company also will own 66.7% of Pioneer's and SAM's combined
operations outside the U.S., while Banco Santander will own directly the
remaining 33.3% stake. The completion of the Transaction is subject to the
signing of a definitive agreement, as well as certain regulatory and corporate
approvals, and other conditions.

Under the 1940 Act, completion of the Transaction will cause each fund's
current investment advisory agreement with the Adviser to terminate. In
connection with the Transaction, each fund's Board of Trustees will be asked to
approve a new investment advisory agreement for each fund. If approved by the
Board, each fund's new investment advisory agreement will be submitted to the
shareholders of the fund for their approval.

Required vote

In accordance with the Agreement and Declaration of Trust for each of Pioneer
Diversified High Income Trust, Pioneer Floating Rate Trust and Pioneer High
Income Trust, the affirmative vote of a plurality of the Common Shares of the
fund present in person or by proxy at the meeting at which a quorum exists is
required to elect each nominee for Trustee.

- Mr. Perna, Ms. Piret and Mr. Ricciardi are the current nominees for
election as Class II Trustees of Pioneer Diversified High Income
Trust, Class III Trustees of Pioneer Floating Rate Trust and Class I
Trustees of Pioneer High Income Trust. The three nominees receiving
the greatest number of votes for Class II Trustee of Pioneer
Diversified High Income Trust, Class III Trustee of Pioneer Floating
Rate Trust and Class I Trustee of Pioneer High Income Trust will be
elected to the Board of Trustees of such fund.

- Ms. Jones and Ms. Monchak are the current nominees for election as
Class III Trustees of Pioneer Diversified High Income Trust, Class I
Trustees of Pioneer Floating Rate Trust and Class II Trustees of
Pioneer High Income Trust. The two nominees receiving the greatest
number of votes for Class III Trustee of Pioneer Diversified High
Income Trust, Class I Trustee of Pioneer Floating Rate Trust and Class
II Trustee of Pioneer High Income Trust will be elected to the Board
of Trustees of such fund.

In accordance with the Agreement and Declaration of Trust for each of Pioneer
Municipal High Income Trust and Pioneer Municipal High Income Advantage Trust,
the holders of Common Shares and Preferred Shares of each fund will vote on the
respective nominees designated to be elected by such class of shares.

The affirmative vote of a plurality of the Common and Preferred Shares of the
fund present in person or by proxy at the meeting at which a quorum exists,
voting together as a single class, is required to elect each nominee for
Trustee designated to be elected by the Common and Preferred Shares of the
fund.

- Mr. Perna and Mr. Ricciardi are the current nominees for election as
Class III Trustees of Pioneer Municipal High Income Trust and Pioneer
Municipal High Income Advantage Trust. The two nominees receiving the
greatest number of votes of the Common and Preferred Shares, voting as
a single class, for Class III Trustee of each of Pioneer Municipal
High Income Trust and Pioneer Municipal High Income Advantage Trust
will be elected to the Board of Trustees of such fund.

- Ms. Jones and Ms. Monchak are the current nominees for election as
Class I Trustees of Pioneer Municipal High Income Trust and Pioneer
Municipal High Income Advantage Trust. The two nominees receiving the
greatest number of votes of the Common and Preferred Shares, voting as
a single class, for Class I Trustee of each of Pioneer Municipal High
Income Trust and Pioneer Municipal High Income Advantage Trust will be
elected to the Board of Trustees of such fund.

The affirmative vote of a plurality of the Preferred Shares of the fund present
at the meeting in person or by proxy is required to elect the nominee for
Trustee designated to be elected by the Preferred Shares of the fund. Ms. Piret
is the current nominee for election by the Preferred Shares only as a Class III
Trustee of Pioneer Municipal High Income Trust and Pioneer Municipal High
Income Advantage Trust. The nominee receiving the greatest number of votes of
the Preferred Shares, voting as a separate class, for Class III Trustee of each
of Pioneer Municipal High Income Trust and Pioneer Municipal High Income
Advantage Trust will be elected to the Board of Trustees of such fund.

Recommendation

For the reasons set forth above, the Trustees of your fund unanimously
recommend that shareholders vote FOR each of Ms. Jones, Ms. Monchak, Mr. Perna,
Ms. Piret and Mr. Ricciardi.

AUDITOR INFORMATION

Each fund's Board of Trustees, with the approval and recommendation of the
Audit Committee, has selected Deloitte & Touche LLP to serve as the independent
registered public accounting firm for the fund's current fiscal year. Deloitte
& Touche LLP replaced Ernst & Young LLP, which served as the independent
registered public accounting firm for each fund for the fund's prior fiscal
year. Ernst & Young LLP resigned as each fund's independent registered public
accounting firm, effective upon completion of the audit of the fund's financial
statements for the fund's prior fiscal year.

During the periods that Ernst & Young LLP served as each fund's independent
registered public accounting firm, including each fund's two most recent fiscal
years, Ernst & Young LLP's reports on each fund's financial statements have not
contained an adverse opinion or disclaimer of opinion and have not been
qualified or modified as to uncertainty, audit scope or accounting principles
or practices, financial statement disclosure, or auditing scope or procedure,
which, if not resolved to the satisfaction of Ernst & Young LLP would have
caused Ernst & Young LLP to make reference to the subject matter of the
disagreement in connection with its report on the financial statements. In
addition, there have been no reportable events of the kind described in Item
304(a)(1)(v) of Regulation S-K under the Securities Exchange Act of 1934.

Audit fees

The following are aggregate fees billed for professional services rendered by
Deloitte & Touche LLP for the most recently completed fiscal year and Ernst &
Young LLP for the prior fiscal year for its audit of each fund's annual
financial statements and fees related to services that are normally provided by
Deloitte & Touche LLP and Ernst & Young LLP in connection with statutory and
regulatory filings for the two most recent fiscal years. All of these services
were pre-approved by the audit Committee of each fund pursuant to Regulation
S-X.

For the fiscal year For the fiscal year
ended 3/31/2015 ended 3/31/2014
----------------------------------------------------------------------
Pioneer High Income Trust $40,803.00 $30,450.00
----------------------------------------------------------------------
Pioneer Municipal High Income
Advantage Trust $40,803.00 $30,450.00
----------------------------------------------------------------------
For the fiscal year For the fiscal year
ended 4/30/2015 ended 4/30/2014
----------------------------------------------------------------------
Pioneer Diversified High
Income Trust $40,803.00 $30,450.00
----------------------------------------------------------------------
Pioneer Municipal High
Income Trust $40,803.00 $30,450.00
----------------------------------------------------------------------
For the fiscal year For the fiscal year
ended 11/30/2014 ended 11/30/2013
----------------------------------------------------------------------
Pioneer Floating Rate Trust $72,213.00 $50,989.00
----------------------------------------------------------------------

Audit-related fees

The following are aggregate fees billed for assurance and related services by
Deloitte & Touche LLP and Ernst & Young LLP to each fund that are related to
agreed upon procedures related to the ratings of each fund's Preferred Shares
(if any) for the two most recent fiscal years. All of these services were
approved by the Audit Committee of each fund pursuant to Regulation S-X.

For the fiscal year For the fiscal year
ended 3/31/2015 ended 3/31/2014
---------------------------------------------------------------------
Pioneer High Income Trust $0.00 $9,650.00
---------------------------------------------------------------------
Pioneer Municipal High Income
Advantage Trust $0.00 $9,650.00
---------------------------------------------------------------------
For the fiscal year For the fiscal year
ended 4/30/2015 ended 4/30/2014
---------------------------------------------------------------------
Pioneer Diversified High
Income Trust $0.00 $0.00
---------------------------------------------------------------------
Pioneer Municipal High
Income Trust $0.00 $9,650.00
---------------------------------------------------------------------
For the fiscal year For the fiscal year
ended 11/30/2014 ended 11/30/2013
---------------------------------------------------------------------
Pioneer Floating Rate Trust $0.00 $9,650.00
---------------------------------------------------------------------

Tax fees

The following are aggregate fees billed for professional services, primarily
for tax returns, rendered by Deloitte & Touche LLP and Ernst & Young LLP for
tax compliance, tax advice and tax planning to each fund for the two most
recent fiscal years. All of these services were pre-approved by the Audit
Committee of each fund pursuant to Regulation S-X.

For the fiscal year For the fiscal year
ended 3/31/2015 ended 3/31/2014
---------------------------------------------------------------------
Pioneer High Income Trust $9,876.00 $8,131.00
---------------------------------------------------------------------
Pioneer Municipal High Income
Advantage Trust $9,876.00 $8,131.00
---------------------------------------------------------------------
For the fiscal year For the fiscal year
ended 4/30/2015 ended 4/30/2014
---------------------------------------------------------------------
Pioneer Diversified High
Income Trust $9,876.00 $8,131.00
---------------------------------------------------------------------
Pioneer Municipal High
Income Trust $9,876.00 $8,131.00
---------------------------------------------------------------------

For the fiscal year For the fiscal year
ended 11/30/2014 ended 11/30/2013
-------------------------------------------------------------------
Pioneer Floating Rate Trust $9,876.00 $8,131.00
-------------------------------------------------------------------

All other fees

There were no fees billed for other services rendered by Deloitte & Touche LLP
or Ernst & Young LLP to the funds.

Affiliates' Fees for Non-Audit Services Required to be Pre-Approved

Each fund's Audit Committee is required to pre-approve services to affiliates
as defined by SEC rules to the extent that the services relate directly to the
operations or financial reporting of the fund. Affiliates include the fund's
investment adviser and any entity controlling, controlled by, or under common
control with the adviser that provides ongoing services to the fund
(hereinafter referred to as "affiliates" of the fund). For the fiscal years
ended March 31, 2015 and 2014, for Pioneer High Income Trust and Pioneer
Municipal High Income Advantage Trust, there were no services provided to an
affiliate that required the fund's Audit Committee pre-approval. For the fiscal
years ended April 30, 2015 and 2014, for Pioneer Diversified High Income Trust
and Pioneer Municipal High Income Trust, there were no services provided to an
affiliate that required the fund's Audit Committee pre-approval. For the fiscal
years ended November 30, 2014 and 2013, for Pioneer Floating Rate Trust, there
were no services provided to an affiliate that required the fund's Audit
Committee pre-approval.

General Audit Committee Approval Policy

o For all projects, each of the officers of the funds and the funds'
independent registered public accounting firm will make an assessment
to determine that any proposed projects will not impair independence.

o Potential services will be classified into the four non-restricted
service categories and the "Approval of Audit, Audit-Related, Tax and
Other Services" Policy will be applied. Any services outside the
specific pre-approved service subcategories set forth above must
specifically be approved by the Audit Committee.

o At least quarterly, the Audit Committee shall review a report
summarizing the services by service category, including fees, provided
by the independent registered public accounting firm as set forth in
the above policy.

The charter of each Audit Committee requires that the Audit Committee shall
approve (a) all audit and non-audit services to be provided to each fund and
(b) all non-audit services to be provided by the fund's independent public
accounting firm to Pioneer and any entity controlling, controlled by or under
common control with the investment adviser that provides ongoing services to
the fund ("Covered Service Providers") if the engagement

relates directly to the operations and financial reporting of the fund. The
Audit Committee may delegate, to the extent permitted by law, pre-approval
responsibilities to one or more members of the Audit Committee who shall report
to the full Audit Committee.

No Audit Committee may approve non-audit services that the Audit Committee
believes may impair the independence of the independent registered public
accounting firm. Permissible non-audit services include any professional
services (including tax services) that are not prohibited services as described
below provided to the fund by the independent registered public accounting
firm, other than those provided to a fund in connection with an audit or a
review of the financial statements of the fund. Permissible non-audit services
may not include (a) bookkeeping or other services related to the accounting
records or financial statements of the fund; (b) financial information systems
design and implementation; (c) appraisal or valuation services, fairness
opinions or contribution-in-kind reports; (d) actuarial services; (e) internal
audit outsourcing services; (f) management functions or human resources; (g)
broker or dealer, investment adviser or investment banking services; (h) legal
services and expert services unrelated to the audit; and (i) any other service
the Public Company Accounting Oversight Board determines, by regulation, is
impermissible.

Pre-approval by the Audit Committee of any permissible non-audit services is
not required so long as: (a) the aggregate amount of all such permissible
non-audit services provided to a fund, Pioneer and any Covered Service Provider
constitutes not more than 5% of the total amount of revenues paid to the
independent registered public accounting firm during the fiscal year in which
the permissible non-audit services are provided to (i) the fund, (ii) Pioneer
and (iii) any Covered Service Provider during the fiscal year in which services
are provided that would not have to be approved by the Audit Committee; (b) the
permissible non-audit services were not recognized by the fund at the time of
the engagement to be non-audit services; and (c) such services are promptly
brought to the attention of the Audit Committee and approved by the Audit
Committee (or its delegate(s)) prior to completion of the audit.

Aggregate Non-Audit Fees

The aggregate non-audit fees billed by Deloitte & Touche LLP and Ernst & Young
LLP for services rendered to each fund and its affiliates, as previously
defined, were as follows.

For the fiscal year For the fiscal year
ended 4/30/2015 ended 4/30/2014
---------------------------------------------------------------------
Pioneer Diversified High
Income Trust $0.00 $40.14
---------------------------------------------------------------------
Pioneer Municipal High
Income Trust $0.00 $72.49
---------------------------------------------------------------------
For the fiscal year For the fiscal year
ended 11/30/2014 ended 11/30/2013
---------------------------------------------------------------------
Pioneer Floating Rate Trust $0.00 $77.70
---------------------------------------------------------------------

The Audit Committee of the Board of each fund has considered whether the
provision of services, other than audit services, by Deloitte & Touche LLP to
each fund and its affiliates is compatible with maintaining Deloitte & Touche
LLP's independence in performing audit services.

Representatives of Deloitte & Touche LLP will be available at the shareholder
meeting (either in person or via telephone), will have the opportunity to make
a statement should they desire to do so, and will be available to answer
questions.

INFORMATION CONCERNING THE MEETINGS

Outstanding shares

As of the record date, July 10, 2015, the following Common and Preferred Shares
of beneficial interest were outstanding for each fund:

Common Shares Preferred Shares
----------------------------------------------------------------------
Pioneer Diversified High Income Trust 8,332,790 None
Pioneer Floating Rate Trust 24,738,174 None
Pioneer High Income Trust 29,002,127 None
Pioneer Municipal High Income
Advantage Trust 23,723,382 Series A 3,000
Series B 3,000
Pioneer Municipal High Income Trust 22,738,580 Series A 2,000
Series B 2,040

Only shareholders of record as of the record date are entitled to notice of and
to vote at the meeting. The holders of one-third of the outstanding shares of
each fund entitled to vote in person or by proxy, counted together, shall
constitute a quorum for the transaction of business with respect to such fund.

Ownership of shares of the funds

To the knowledge of each fund, as of the record date, the following persons
owned of record or beneficially 5% or more of a class of the outstanding shares
of each class of a fund:

Pioneer Diversified High Income Trust

Record Holder Share Class Number of Shares % of Class
-------------------------------------------------------------------
Cede & Co (Fast Account)
P.O. Box 20
Bowling Green Station
New York, NY 10004 Common 8,326,847 99.93%
-------------------------------------------------------------------
Pioneer Floating Rate Trust

Record Holder Share Class Number of Shares % of Class
-------------------------------------------------------------------
Cede & Co (Fast Account)
P.O. Box 20
Bowling Green Station
New York, NY 10004 Common 24,732,938 99.98%
-------------------------------------------------------------------
Pioneer High Income Trust

Record Holder Share Class Number of Shares % of Class
-------------------------------------------------------------------
Cede & Co (Fast Account)
P.O. Box 20
Bowling Green Station
New York, NY 10004 Common 28,922,526 99.73%
-------------------------------------------------------------------

Pioneer Municipal High Income Advantage Trust

Record Holder Share Class Number of Shares % of Class
-------------------------------------------------------------------------
Cede & Co (Fast Account)
P.O. Box 20
Bowling Green Station
New York, NY 10004 Common 23,700,291 99.90%
-------------------------------------------------------------------------
UBS Securities, LLC
1285 Avenue of the Americas,
15th Floor
New York, NY 10019 Series A 983 32.77%
Series B 1,296 43.20%
-------------------------------------------------------------------------
Merrill Lynch
4804 Deer Lake Drive East,
4th Floor
Jacksonville, FL 32232-5286 Series A 414 13.80%
Series B 338 11.27%
-------------------------------------------------------------------------
Wells Fargo Advisors, LLC
One North Jefferson
St. Louis, MO 63103 Series A 429 14.30%
Series B 560 18.67%
-------------------------------------------------------------------------
Oppenheimer/Fahnestock
125 Broad Street 16th Floor
New York, NY 10004-2464 Series A 768 25.60%
Series B 697 23.23%
-------------------------------------------------------------------------
Raymond James Associates
880 Carillon Parkway
St. Petersburg, FL 33716 Series A 302 10.07%
-------------------------------------------------------------------------
Pioneer Municipal High Income Trust

Pioneer Municipal High Income Trust

Record Holder Share Class Number of Shares % of Class
-------------------------------------------------------------------------
Oppenheimer/Fahnestock
125 Broad Street, 16th Floor
New York, NY 10004-2464 Series A 342 17.10%
Series B 560 27.45%
-------------------------------------------------------------------------
Merrill Lynch
4804 Deer Lake Drive East,
4th Floor
Jacksonville, FL 32232-5286 Series A 174 8.70%
Series B 362 17.75%
-------------------------------------------------------------------------
Raymond James Associates
880 Carillon Parkway
St. Petersburg, FL 33716 Series A 196 9.80%
Series B 227 11.13%
-------------------------------------------------------------------------
Wells Fargo Advisors, LLC
One North Jefferson
St. Louis, MO 63103 Series A 314 15.70%
Series B 177 8.68%
-------------------------------------------------------------------------
Morgan Stanley Inc.
1585 Broadway, 3rd Floor
New York, NY 10036 Series B 139 6.81%
-------------------------------------------------------------------------

Shareholder proposals

Under Rule 14a-8 of the Exchange Act (relating to shareholder proposals), any
shareholder proposal that may properly be included in your fund's proxy
statement for the 2016 annual meeting, must be received by the Secretary of the
fund at the fund's principal offices at 60 State Street, Boston, Massachusetts
02109 at least 120 calendar days prior to the anniversary of the date of
mailing of the fund's proxy statement for the 2015 annual meeting, or on or
before April 8, 2016. A proposal that is not to be included in a fund's proxy
statement may be made at the 2016 annual meeting for such fund only if it is
received by the Secretary of the fund at the fund's principal offices at 60
State Street, Boston, Massachusetts 02109 not more than 120 days and at least
90 days before the anniversary date of the mailing of the fund's proxy
materials for the 2015 annual meeting provided, however, that in the event that
the date of the mailing of the notice for the 2016 annual meeting for a fund is
advanced or delayed by more than thirty (30) days from the anniversary date of
the mailing of the notice for the 2015 annual meeting, notice by a shareholder
to be timely must be so delivered not earlier than the close of business on the
120th day prior to the date of mailing of the notice for the 2016 annual
meeting and not later than the close of business on the later of the 90th day
prior to the date of mailing of the notice for the 2016 annual meeting or the
10th day following the day on which public announcement of the date of mailing
of the notice for the 2016 meeting is first made by

the fund. The funds' By-laws require that certain information must be provided
by the shareholder to the fund when notice of a nominee for election as a
Trustee or proposal is submitted to the fund.

The submission by a shareholder of a proposal for inclusion in a proxy
statement does not guarantee that it will be included. Each of Pioneer
Diversified High Income Trust, Pioneer Floating Rate Trust, Pioneer High Income
Trust, Pioneer Municipal High Income Trust and Pioneer Municipal High Income
Advantage Trust currently expect to hold the next annual shareholders' meeting
on or about September 20, 2016, which date is subject to change. Shareholder
proposals are subject to certain regulations under the federal securities
laws.

Proxies, quorum and voting at the meeting

Any shareholder who has given his or her proxy to someone generally has the
power to revoke that proxy at any time prior to its exercise by executing a
superseding proxy or by submitting a notice of revocation to the Secretary of
the fund. In addition, although mere attendance at the meeting will not revoke
a proxy, a shareholder present at the meeting may withdraw his or her proxy and
vote in person. All properly executed and unrevoked proxies received in time
for the meeting will be voted in accordance with the instructions contained in
the proxies. If no instruction is given, the persons named as proxies will vote
the shares represented thereby in favor of Proposal 1, as described above, and
will use their best judgment in connection with the transaction of such other
business as may properly come before the meeting or any adjournment or
postponement thereof.

Only shareholders of record as of the record date are entitled to notice of and
to vote at the meeting.

For each of Pioneer Diversified High Income Trust, Pioneer Floating Rate Trust
and Pioneer High Income Trust: one-third of the outstanding shares of the fund
entitled to vote, present in person or represented by proxy, constitutes a
quorum for the transaction of business at the meeting.

For each of Pioneer Municipal High Income Trust and Pioneer Municipal High
Income Advantage Trust: one-third of the outstanding Common and Preferred
Shares of the fund entitled to vote, present in person or represented by proxy,
counted together, constitutes a quorum for the transaction of business at the
meeting.

Abstentions and "broker non-votes" will be treated as present for purposes of
determining a quorum. "Broker non-votes" occur when a broker or nominee holding
shares in "street name" indicates on the proxy card that it does not have
discretionary authority to vote on a proposal and has not received instructions
from the beneficial owner.

In the event that at the time any session of the meeting is called to order a
quorum is not present in person or by proxy, the persons named as proxies may
vote those proxies that have been received to adjourn the shareholder meeting
to a later date and the meeting may be held as adjourned without further
notice. In the event that a quorum is present but sufficient votes in favor of
the proposal have not been received, the persons named as proxies may propose
one or more adjournments of the shareholder meeting to permit

further solicitation of proxies with respect to such proposal and the meeting
may be held as adjourned without further notice. Any such adjournment will
require the affirmative vote of more than one half of the shares of the fund
present in person or by proxy on the motion for adjournment at the session of
the meeting to be adjourned. The persons named as proxies will vote those
proxies which they are entitled to vote in favor of any such proposal, or that
abstained, in favor of such an adjournment and will vote those proxies required
to be voted against any such proposal against any such adjournment. Unless a
proxy is otherwise limited in this regard, any shares present and entitled to
vote at the meeting that are represented by broker non-votes may, at the
discretion of the proxies named therein, be voted in favor of such an
adjournment. A shareholder vote may be taken on one or more of the proposals in
the proxy statement prior to such adjournment if sufficient votes for its
approval have been received and it is otherwise appropriate. Such vote will be
considered final regardless of whether the meeting is adjourned to permit
additional solicitation with respect to any other proposal. The meeting may be
postponed prior to the meeting. If the meeting is postponed, the funds will
give notice of the postponed meeting to shareholders.

On any matter submitted to a vote of shareholders each whole share shall be
entitled to one vote as to any matter on which it is entitled to vote and each
fractional share shall be entitled to a proportionate fractional vote.

As discussed more fully under Proposal 1 above, nominees must be elected by a
plurality of the votes cast in person or by proxy at the meeting at which a
quorum exists. Abstentions and "broker non-votes" are not considered "votes
cast" and, therefore, do not constitute a vote "FOR" a proposal. Thus,
abstentions and "broker non-votes" will have no effect on the voting for the
election of Trustees in Proposal 1, because only votes "FOR" are considered in
a plurality voting requirement.

Other business

While the meeting has been called to transact any business that may properly
come before it, the only matters that the Trustees intend to present are those
matters stated in the attached notice of annual meeting of shareholders.
However, if any additional matters properly come before the meeting, and on all
matters incidental to the conduct of the meeting, it is the intention of the
persons named in the enclosed proxy to vote the proxy in accordance with their
judgment on such matters unless instructed to the contrary.

Method of solicitation and expenses

The cost of preparing, printing and mailing the enclosed proxy statement,
accompanying notice of annual meeting of shareholders and the accompanying
proxy card for each fund will be borne by that fund. In addition to soliciting
proxies by mail, Pioneer may, at the fund's expense, have one or more of the
fund's officers, representatives or compensated third-party agents, including
Pioneer, PIMSS and PFD, aid in the solicitation of proxies by personal
interview or telephone and may request brokerage houses and other custodians,
nominees and fiduciaries to forward proxy soliciting material to the beneficial
owners of

the shares held of record by such persons. Each fund has retained AST Fund
Solutions, LLC to assist in the proxy solicitation. The cost of their services
is estimated at approximately $100,000.

Each fund may also arrange to have votes recorded by telephone, the internet or
other electronic means. The voting procedures used in connection with such
voting methods are designed to authenticate shareholders' identities, to allow
shareholders to authorize the voting of their shares in accordance with their
instructions and to confirm that their instructions have been properly
recorded. If these procedures were subject to a successful legal challenge,
such votes would not be counted at the shareholder meeting. Each fund is
unaware of any such challenge at this time. In the case of telephone voting,
shareholders would be called at the phone number the sub-transfer agent,
American Stock Transfer & Trust Company, has in its records for their accounts,
and would be asked for their Social Security number or other identifying
information. The shareholders would then be given an opportunity to authorize
proxies to vote their shares at the meeting in accordance with their
instructions. In the case of automated telephone and internet voting,
shareholders would be required to provide their Social Security number or other
identifying information and would receive a confirmation of their
instructions.

Persons holding shares as nominees will be reimbursed by the fund, upon
request, for the reasonable expenses of mailing soliciting materials to the
principals of the accounts.

August 7, 2015

22246-07-0815

PIONEER LOGO PROXY

PIONEER DIVERSIFIED HIGH INCOME TRUST

ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD SEPTEMBER 22, 2015

This proxy is solicited on behalf of the Board of Trustees of Pioneer
Diversified High Income Trust. I (we), the undersigned holder(s) of common
shares of beneficial interest, having received notice of the meeting and
management's proxy statement therefore, and revoking all prior proxies, hereby
appoint Lisa M. Jones, Christopher J. Kelley and Thomas Reyes, and each of
them, my (our) attorneys (with full power of substitution in them and each of
them) for and in my (our) name(s) to attend the Annual Meeting of Shareholders
of Pioneer Diversified High Income Trust to be held on September 22, 2015, at
2:00 p.m. (Eastern time) at the offices of Morgan, Lewis & Bockius LLP, One
Federal Street, Boston, Massachusetts 02110, and any adjourned or postponed
session or sessions thereof, and to vote and act upon the following matters (as
more fully described in the accompanying proxy statement) in respect of all
common shares of beneficial interest of Pioneer Diversified High Income Trust
which I (we) will be entitled to vote or act upon, with all the powers I (we)
would possess if personally present.

IN THEIR DISCRETION, THE PROXIES ARE AUTHORIZED TO VOTE UPON SUCH OTHER
BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING. THE SHARES REPRESENTED BY
THIS PROXY WILL BE VOTED AS DIRECTED BY THE UNDERSIGNED.

Note: In signing, please write name(s) exactly as they
appear on this proxy. When signing as attorney, executor,
administrator or other fiduciary, please give your full
title as such. Joint owners should each sign personally.

------------------------------------------------------------
Signature(s) [Title(s) if applicable] Date

------------------------------------------------------------
Signature of joint owner, if any Date

--------------------------------------------------------------------------------

[] FOLD HERE []

YOUR VOTE IS VERY IMPORTANT.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD PROMPTLY

THE COMMON SHARES OF BENEFICIAL INTEREST REPRESENTED BY THIS PROXY WILL BE
VOTED AS DIRECTED BY THE UNDERSIGNED. IF THE PROXY IS SIGNED BUT NO DIRECTION
IS GIVEN, THIS PROXY WILL BE VOTED FOR THE PROPOSAL.

THIS PROXY IS SOLICITED BY THE BOARD OF TRUSTEES OF PIONEER DIVERSIFIED HIGH
INCOME TRUST AND SHOULD BE RETURNED AS SOON AS POSSIBLE IN THE ENVELOPE
PROVIDED. THE BOARD RECOMMENDS THAT YOU VOTE IN FAVOR OF THE FOLLOWING PROPOSAL:

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK: [X]

1. To elect three Class II trustees and two Class III trustees of Pioneer
Diversified High Income Trust, as named in the attached proxy statement, to
serve on the Board of Trustees until their successors have been duly
elected and qualified. The nominees for trustee are:

FOR WITHHOLD FOR ALL
ALL ALL EXCEPT

Class II
01. Thomas J. Perna 02. Marguerite A. Piret 03. Fred J. Ricciardi
[ ] [ ] [ ]
Class III
04. Lisa M. Jones 05. Lorraine H. Monchak

To withhold authority to vote "FOR" any individual nominee, mark the "FOR ALL
EXCEPT" box and write the nominee's number(s) on the line provided below.

--------------------------------------------------------------------------------

YOUR VOTE IS IMPORTANT. PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY
TODAY YOU CAN FIND THE PROXY STATEMENT ONLINE AT:
www.proxyonline.com/docs/pioneerclosedendfunds

TAG ID: 12345678 SCANNER BAR CODE CUSIP:

PIONEER LOGO PROXY

PIONEER FLOATING RATE TRUST

ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD SEPTEMBER 22, 2015

This proxy is solicited on behalf of the Board of Trustees of Pioneer Floating
Rate Trust. I (we), the undersigned holder(s) of common shares of beneficial
interest, having received notice of the meeting and management's proxy
statement therefore, and revoking all prior proxies, hereby appoint Lisa M.
Jones, Christopher J. Kelley and Thomas Reyes, and each of them, my (our)
attorneys (with full power of substitution in them and each of them) for and in
my (our) name(s) to attend the Annual Meeting of Shareholders of Pioneer
Floating Rate Trust to be held on September 22, 2015, at 2:00 p.m. (Eastern
time) at the offices of Morgan, Lewis & Bockius LLP, One Federal Street,
Boston, Massachusetts 02110, and any adjourned or postponed session or sessions
thereof, and to vote and act upon the following matters (as more fully
described in the accompanying proxy statement) in respect of all common shares
of beneficial interest of Pioneer Floating Rate Trust which I (we) will be
entitled to vote or act upon, with all the powers I (we) would possess if
personally present.

------------------------------------------------------------
Signature(s) [Title(s) if applicable] Date

------------------------------------------------------------
Signature of joint owner, if any Date

--------------------------------------------------------------------------------

[] FOLD HERE []

YOUR VOTE IS VERY IMPORTANT.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD PROMPTLY

THIS PROXY IS SOLICITED BY THE BOARD OF TRUSTEES OF PIONEER FLOATING RATE TRUST
AND SHOULD BE RETURNED AS SOON AS POSSIBLE IN THE ENVELOPE PROVIDED. THE BOARD
RECOMMENDS THAT YOU VOTE IN FAVOR OF THE FOLLOWING PROPOSAL:

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK: [X]

1. To elect three Class III trustees and two Class I trustees of Pioneer
Floating Rate Trust, as named in the attached proxy statement, to serve on
the Board of Trustees until their successors have been duly elected and
qualified. The nominees for trustee are:

FOR WITHHOLD FOR ALL
ALL ALL EXCEPT

Class III
01. Thomas J. Perna 02. Marguerite A. Piret 03. Fred J. Ricciardi
[ ] [ ] [ ]
Class I
04. Lisa M. Jones 05. Lorraine H. Monchak

To withhold authority to vote "FOR" any individual nominee, mark the "FOR ALL
EXCEPT" box and write the nominee's number(s) on the line provided below.

--------------------------------------------------------------------------------

YOUR VOTE IS IMPORTANT. PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY
TODAY YOU CAN FIND THE PROXY STATEMENT ONLINE AT:
www.proxyonline.com/docs/pioneerclosedendfunds

TAG ID: 12345678 SCANNER BAR CODE CUSIP:

PIONEER LOGO PROXY

PIONEER HIGH INCOME TRUST

ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD SEPTEMBER 22, 2015

This proxy is solicited on behalf of the Board of Trustees of Pioneer High
Income Trust. I (we), the undersigned holder(s) of common shares of beneficial
interest, having received notice of the meeting and management's proxy
statement therefore, and revoking all prior proxies, hereby appoint Lisa M.
Jones, Christopher J. Kelley and Thomas Reyes, and each of them, my (our)
attorneys (with full power of substitution in them and each of them) for and in
my (our) name(s) to attend the Annual Meeting of Shareholders of Pioneer High
Income Trust to be held on September 22, 2015, at 2:00 p.m. (Eastern time) at
the offices of Morgan, Lewis & Bockius LLP, One Federal Street, Boston,
Massachusetts 02110, and any adjourned or postponed session or sessions
thereof, and to vote and act upon the following matters (as more fully
described in the accompanying proxy statement) in respect of all common shares
of beneficial interest of Pioneer High Income Trust which I (we) will be
entitled to vote or act upon, with all the powers I (we) would possess if
personally present.

------------------------------------------------------------
Signature(s) [Title(s) if applicable] Date

------------------------------------------------------------
Signature of joint owner, if any Date

--------------------------------------------------------------------------------

[] FOLD HERE []

YOUR VOTE IS VERY IMPORTANT.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD PROMPTLY

THIS PROXY IS SOLICITED BY THE BOARD OF TRUSTEES OF PIONEER HIGH INCOME TRUST
AND SHOULD BE RETURNED AS SOON AS POSSIBLE IN THE ENVELOPE PROVIDED. THE BOARD
RECOMMENDS THAT YOU VOTE IN FAVOR OF THE FOLLOWING PROPOSAL:

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK: [X]

1. To elect three Class I trustees and two Class II trustees of Pioneer High
Income Trust, as named in the attached proxy statement, to serve on the
Board of Trustees until their successors have been duly elected and
qualified. The nominees for trustee are:

FOR WITHHOLD FOR ALL
ALL ALL EXCEPT

Class I
01. Thomas J. Perna 02. Marguerite A. Piret 03. Fred J. Ricciardi
[ ] [ ] [ ]
Class II
04. Lisa M. Jones 05. Lorraine H. Monchak

To withhold authority to vote "FOR" any individual nominee, mark the "FOR ALL
EXCEPT" box and write the nominee's number(s) on the line provided below.

--------------------------------------------------------------------------------

YOUR VOTE IS IMPORTANT. PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY
TODAY YOU CAN FIND THE PROXY STATEMENT ONLINE AT:
www.proxyonline.com/docs/pioneerclosedendfunds

TAG ID: 12345678 SCANNER BAR CODE CUSIP:

PIONEER LOGO PROXY

PIONEER MUNICIPAL HIGH INCOME ADVANTAGE TRUST

ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD SEPTEMBER 22, 2015

This proxy is solicited on behalf of the Board of Trustees of Pioneer Municipal
High Income Advantage Trust. I (we), the undersigned holder(s) of preferred
shares of beneficial interest, having received notice of the meeting and
management's proxy statement therefore, and revoking all prior proxies, hereby
appoint Lisa M. Jones, Christopher J. Kelley and Thomas Reyes, and each of
them, my (our) attorneys (with full power of substitution in them and each of
them) for and in my (our) name(s) to attend the Annual Meeting of Shareholders
of Pioneer Municipal High Income Advantage Trust to be held on September 22,
2015, at 2:00 p.m. (Eastern time) at the offices of Morgan, Lewis & Bockius
LLP, One Federal Street, Boston, Massachusetts 02110, and any adjourned or
postponed session or sessions thereof, and to vote and act upon the following
matters (as more fully described in the accompanying proxy statement) in
respect of all preferred shares of beneficial interest of Pioneer Municipal
High Income Advantage Trust which I (we) will be entitled to vote or act upon,
with all the powers I (we) would possess if personally present.

------------------------------------------------------------
Signature(s) [Title(s) if applicable] Date

------------------------------------------------------------
Signature of joint owner, if any Date

--------------------------------------------------------------------------------

[] FOLD HERE []

YOUR VOTE IS VERY IMPORTANT.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD PROMPTLY

THE PREFERRED SHARES OF BENEFICIAL INTEREST REPRESENTED BY THIS PROXY WILL BE
VOTED AS DIRECTED BY THE UNDERSIGNED. IF THE PROXY IS SIGNED BUT NO DIRECTION
IS GIVEN, THIS PROXY WILL BE VOTED FOR THE PROPOSAL.

THIS PROXY IS SOLICITED BY THE BOARD OF TRUSTEES OF PIONEER MUNICIPAL HIGH
INCOME ADVANTAGE TRUST AND SHOULD BE RETURNED AS SOON AS POSSIBLE IN THE
ENVELOPE PROVIDED. THE BOARD RECOMMENDS THAT YOU VOTE IN FAVOR OF THE
FOLLOWING PROPOSAL:

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK: [X]

1. To elect one Class III trustee of Pioneer Municipal High Income Advantage
Trust, as named in the attached proxy statement, to serve on the Board of
Trustees until her successor has been duly elected and qualified. The
nominee for trustee is:

FOR WITHHOLD
01. Marguerite A. Piret [ ] [ ]

YOUR VOTE IS IMPORTANT. PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY
TODAY YOU CAN FIND THE PROXY STATEMENT ONLINE AT:
www.proxyonline.com/docs/pioneerclosedendfunds

TAG ID: 12345678 SCANNER BAR CODE CUSIP:

PIONEER LOGO PROXY

PIONEER MUNICIPAL HIGH INCOME TRUST

ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD SEPTEMBER 22, 2015

This proxy is solicited on behalf of the Board of Trustees of Pioneer Municipal
High Income Trust. I (we), the undersigned holder(s) of preferred shares of
beneficial interest, having received notice of the meeting and management's
proxy statement therefore, and revoking all prior proxies, hereby appoint Lisa
M. Jones, Christopher J. Kelley and Thomas Reyes, and each of them, my (our)
attorneys (with full power of substitution in them and each of them) for and in
my (our) name(s) to attend the Annual Meeting of Shareholders of Pioneer
Municipal High Income Trust to be held on September 22, 2015, at 2:00 p.m.
(Eastern time) at the offices of Morgan, Lewis & Bockius LLP, One Federal
Street, Boston, Massachusetts 02110, and any adjourned or postponed session or
sessions thereof, and to vote and act upon the following matters (as more fully
described in the accompanying proxy statement) in respect of all preferred
shares of beneficial interest of Pioneer Municipal High Income Trust which I
(we) will be entitled to vote or act upon, with all the powers I (we) would
possess if personally present.

------------------------------------------------------------
Signature(s) [Title(s) if applicable] Date

------------------------------------------------------------
Signature of joint owner, if any Date

--------------------------------------------------------------------------------

[] FOLD HERE []

YOUR VOTE IS VERY IMPORTANT.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD PROMPTLY

THIS PROXY IS SOLICITED BY THE BOARD OF TRUSTEES OF PIONEER MUNICIPAL HIGH
INCOME TRUST AND SHOULD BE RETURNED AS SOON AS POSSIBLE IN THE ENVELOPE
PROVIDED. THE BOARD RECOMMENDS THAT YOU VOTE IN FAVOR OF THE FOLLOWING
PROPOSAL:

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK: [X]

1. To elect one Class III trustee of Pioneer Municipal High Income Trust, as
named in the attached proxy statement, to serve on the Board of Trustees
until her successor has been duly elected and qualified. The nominee for
trustee is:

FOR WITHHOLD
01. Marguerite A. Piret [ ] [ ]

--------------------------------------------------------------------------------

YOUR VOTE IS IMPORTANT. PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY
TODAY YOU CAN FIND THE PROXY STATEMENT ONLINE AT:
www.proxyonline.com/docs/pioneerclosedendfunds

TAG ID: 12345678 SCANNER BAR CODE CUSIP:

PIONEER LOGO PROXY

PIONEER MUNICIPAL HIGH INCOME ADVANTAGE TRUST

ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD SEPTEMBER 22, 2015

This proxy is solicited on behalf of the Board of Trustees of Pioneer Municipal
High Income Advantage Trust. I (we), the undersigned holder(s) of common shares
of beneficial interest, having received notice of the meeting and management's
proxy statement therefore, and revoking all prior proxies, hereby appoint Lisa
M. Jones, Christopher J. Kelley and Thomas Reyes, and each of them, my (our)
attorneys (with full power of substitution in them and each of them) for and in
my (our) name(s) to attend the Annual Meeting of Shareholders of Pioneer
Municipal High Income Advantage Trust to be held on September 22, 2015, at 2:00
p.m. (Eastern time) at the offices of Morgan, Lewis & Bockius LLP, One Federal
Street, Boston, Massachusetts 02110, and any adjourned or postponed session or
sessions thereof, and to vote and act upon the following matters (as more fully
described in the accompanying proxy statement) in respect of all common shares
of beneficial interest of Pioneer Municipal High Income Advantage Trust which I
(we) will be entitled to vote or act upon, with all the powers I (we) would
possess if personally present.

------------------------------------------------------------
Signature(s) [Title(s) if applicable] Date

------------------------------------------------------------
Signature of joint owner, if any Date

--------------------------------------------------------------------------------

[] FOLD HERE []

YOUR VOTE IS VERY IMPORTANT.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD PROMPTLY

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK: [X]

1. To elect two Class III trustees and two Class I trustees of Pioneer
Municipal High Income Advantage Trust, as named in the attached proxy
statement, to serve on the Board of Trustees until their successors have
been duly elected and qualified. The nominees for trustee are:

FOR WITHHOLD FOR ALL
ALL ALL EXCEPT

Class III
01. Thomas J. Perna 02. Fred J. Ricciardi
[ ] [ ] [ ]
Class I
03. Lisa M. Jones 04. Lorraine H. Monchak

To withhold authority to vote "FOR" any individual nominee, mark the "FOR ALL
EXCEPT" box and write the nominee's number(s) on the line provided below.

--------------------------------------------------------------------------------

YOUR VOTE IS IMPORTANT. PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY
TODAY YOU CAN FIND THE PROXY STATEMENT ONLINE AT:
www.proxyonline.com/docs/pioneerclosedendfunds

TAG ID: 12345678 SCANNER BAR CODE CUSIP:

PIONEER LOGO PROXY

PIONEER MUNICIPAL HIGH INCOME TRUST

ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD SEPTEMBER 22, 2015

This proxy is solicited on behalf of the Board of Trustees of Pioneer Municipal
High Income Trust. I (we), the undersigned holder(s) of common shares of
beneficial interest, having received notice of the meeting and management's
proxy statement therefore, and revoking all prior proxies, hereby appoint Lisa
M. Jones, Christopher J. Kelley and Thomas Reyes, and each of them, my (our)
attorneys (with full power of substitution in them and each of them) for and in
my (our) name(s) to attend the Annual Meeting of Shareholders of Pioneer
Municipal High Income Trust to be held on September 22, 2015, at 2:00 p.m.
(Eastern time) at the offices of Morgan, Lewis & Bockius LLP, One Federal
Street, Boston, Massachusetts 02110, and any adjourned or postponed session or
sessions thereof, and to vote and act upon the following matters (as more fully
described in the accompanying proxy statement) in respect of all common shares
of beneficial interest of Pioneer Municipal High Income Trust which I (we) will
be entitled to vote or act upon, with all the powers I (we) would possess if
personally present.

------------------------------------------------------------
Signature(s) [Title(s) if applicable] Date

------------------------------------------------------------
Signature of joint owner, if any Date

--------------------------------------------------------------------------------

[] FOLD HERE []

YOUR VOTE IS VERY IMPORTANT.

PLEASE COMPLETE, SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD PROMPTLY

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK: [X]

1. To elect two Class III trustees and two Class I trustees of Pioneer
Municipal High Income Trust, as named in the attached proxy statement, to
serve on the Board of Trustees until their successors have been duly
elected and qualified. The nominees for trustee are:

FOR WITHHOLD FOR ALL
ALL ALL EXCEPT

Class III
01. Thomas J. Perna 02. Fred J. Ricciardi
[ ] [ ] [ ]
Class I
03. Lisa M. Jones 04. Lorraine H. Monchak

To withhold authority to vote "FOR" any individual nominee, mark the "FOR ALL
EXCEPT" box and write the nominee's number(s) on the line provided below.

--------------------------------------------------------------------------------

YOUR VOTE IS IMPORTANT. PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY
TODAY YOU CAN FIND THE PROXY STATEMENT ONLINE AT:
www.proxyonline.com/docs/pioneerclosedendfunds

TAG ID: 12345678 SCANNER BAR CODE CUSIP: