Pioneer Investments Declares Monthly Distributions for Closed-End Funds

Pioneer Investments today announced the declaration of dividends for five closed-end funds for October 2008. The closing market price, annualized distribution rate and NAV distribution rate are based on data as of October 2, 2008.

Ex Date: October 10, 2008
Record Date: October 15, 2008
Payable Date: October 31, 2008

Fund

Distribution

Market
Price (a)

Market Price
Distribution
Rate

NAV

NAV
Distribution

Rate

Pioneer High Income Trust (NYSE: PHT) $ 0.1375 $ 10.85 15.21 % $ 11.69 14.11 %
Pioneer Municipal High Income Trust (NYSE: MHI) $ 0.0700 $ 10.44 8.05 % $ 12.10 6.94 %
Pioneer Municipal High Income Advantage Trust (NYSE: MAV) $ 0.0750 $ 10.85 8.29 % $ 11.46 7.85 %
Pioneer Floating Rate Trust (NYSE: PHD) $ 0.1150 $ 10.28 13.42 % $ 13.37 10.32 %
Pioneer Diversified High Income Trust (AMEX: HNW) $ 0.2200 (b ) $ 14.68 17.98 % $ 19.02 13.88 %

(a) Source: ETF Connect

(b) At this time, HNW believes that a portion of its distribution may include a return of capital, in addition to net investment income and long-term capital gains. A return of capital is not a distribution of income or capital gains from the fund, does not necessarily reflect the fund's investment performance, and should not be considered "yield" or "income." Further information on the composition of the distributions will be made available on the payment date and will be available at www.pioneerinvestments.com. The final determination of tax characteristics of the funds distributions will occur after the end of the year, at which time it will be reported to shareholders.

Taxable-Equivalent
Distribution Rate
at Market Price

Taxable-Equivalent
Distribution Rate
at NAV

Pioneer Municipal High Income Trust (NYSE: MHI) 12.38% 10.68%
Pioneer Municipal High Income Advantage Trust (NYSE: MAV) 12.75% 12.08%

The funds are closed-end investment companies. Each funds common shares trade on the New York Stock Exchange (NYSE), except HNW, which trades on the American Stock Exchange (Amex). Pioneer Investment Management, Inc. is each funds investment adviser.

Shareholder Inquiries: Please contact your financial advisor or visit www.pioneerinvestments.com.

Broker/Advisor Inquiries Please Contact: 800-622-9876
Media Inquiries Please Contact: Geoff Smith
617-422-4727

Keep in mind, dividends are not guaranteed. Closed end funds, unlike open-end funds, are not continuously offered. There is a one-time public offering and once issued, shares of closed-end funds are bought and sold in the open market through a stock exchange and frequently trade at prices lower than their net asset values. Net Asset Value (NAV) is total assets less total liabilities divided by the number of common shares outstanding. For performance data on Pioneer's closed-end funds, please call 800-225-6292 or visit our closed-end pricing page.

©2008 Pioneer Investment Management, Inc.

Member of the UniCredit Banking Group, Register of Banking Groups

Contacts:

Pioneer Investments
Broker/Advisor Inquiries, 800-622-9876
or
Media Inquiries:
Geoff Smith, 617-422-4727

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