Conference Call on Pioneer High Income Trust (NYSE: PHT) Scheduled For Thursday, April 19, 2012 at 4:15 PM EST

Pioneer Investments today announced the date and time for a conference call regarding Pioneer High Income Trust (NYSE: PHT) with Portfolio Manager Andrew Feltus. The purpose of this call is to discuss the performance of the fund year-to-date and its current positioning. The conference call will be open to the public.

The call will be held on Thursday, April 19, 2012 at 4:15 PM EST and can be accessed by calling (888) 584-3271. Conference ID # 71108778. The call will be available on replay for seven days following the call at (855) 859-2056. Conference ID # 71108778. A transcript will be posted to us.pioneerinvestments.com.

Pioneer Investment Management, Inc., the investment advisor for this fund, is part of Pioneer Investment Management USA Inc., the U.S. subsidiary of Pioneer Global Asset Management S.p.A.

Closed-end funds, unlike open-end funds, are not continuously offered. There is a one-time public offering and once issued, common shares of closed-end funds are sold in the open market through a stock exchange and frequently trade at prices lower than their net asset value. Net asset value (NAV) is total assets less total liabilities divided by the number of common shares outstanding.

©2012 Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109

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