PIONEER FLORIDA TAX FREE INCOME FUND

                         SPECIAL MEETING OF SHAREHOLDERS

                                October 17, 2006

     This proxy is solicited on behalf of the Board of Trustees of Pioneer
Florida Tax Free Income Fund (the "Portfolio"), a series of Pioneer Series Trust
IV. The undersigned hereby appoints John F. Cogan, Jr., Dorothy E. Bourassa,
Christopher J. Kelley and Christopher P. Harvey, each of them (with full powers
of substitution) to vote for the undersigned all shares of beneficial interest
of the undersigned in the above-referenced Portfolio at the Special Meeting of
Shareholders of the Portfolio to be held at 2:00 p.m., Eastern time, on October
17, 2006, at the offices of Wilmer Cutler Pickering Hale and Dorr LLP, 60 State
Street, 26th Floor, Boston, Massachusetts, and any adjournment thereof
("Meeting"), with all the power the undersigned would have if personally
present.

     The shares represented by this proxy will be voted as instructed on the
reverse side. Unless instructions to the contrary are given on the reverse or if
this proxy is executed but no instruction is given, this proxy shall be deemed
to grant authority to vote "FOR" the proposal, with discretionary power to vote
upon such other business as may properly come before the Meeting or any
adjournment. The proxies intend to vote with management on any such other
business properly brought before the Meeting. The undersigned hereby
acknowledges receipt of the accompanying Notice of the Meeting and combined
Proxy Statement and Prospectus.


                             Date:  [            ], 2006

                             YOUR VOTE IS VERY IMPORTANT. PLEASE COMPLETE, SIGN,
                             DATE AND RETURN THE ENCLOSED PROXY CARD PROMPTLY.


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                             Signature(s) of Shareholder(s)    (Sign in the Box)

                             NOTE: Please sign exactly as you name or names
                             appear. When signing as attorney, executor,
                             administrator, trustee or guardian, please give
                             your full title as such. If a corporation or
                             partnership, please sign in full corporate or
                             partnership name by an authorized officer.



             NOTE: YOUR PROXY CARD IS NOT VALID UNLESS IT IS SIGNED


YOUR VOTE IS IMPORTANT. PLEASE VOTE BY FILLING IN THE APPROPRIATE BOX BELOW.
THIS PROXY WILL BE VOTED "FOR" THE PROPOSAL BELOW IF NO SPECIFICATION IS MADE
BELOW.

Your Board of Trustees recommends that you vote "FOR" Proposal 1.

(1) To approve an Agreement and Plan of Reorganization. Under an Agreement and
Plan of Reorganization, your Portfolio will transfer all of its assets to
Pioneer AMT-Free Municipal Fund (the "Acquiring Portfolio"), a series of Pioneer
Series Trust II managed by Pioneer Investment Management, Inc., in exchange for
shares of the Acquiring Portfolio.

Please review the enclosed combined Proxy Statement and Prospectus because it
contains important information regarding this proposal.


             FOR [_]            AGAINST [_]            ABSTAIN [_]


(2) To transact such other business as may properly come before the meeting.


                   WE NEED YOUR VOTE BEFORE October 17, 2006.

                     PLEASE SIGN AND DATE THE REVERSE SIDE.