CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

     We consent to the references to our firm under the captions "Financial
Highlights" and "Experts" in the Combined Proxy Statement of Pioneer Interest
Shares (a closed-end fund) and Prospectus for Class Y shares for Pioneer Bond
Fund (an open-end fund) ("Combined Proxy Statement and Prospectus"), and to the
incorporation by reference of our reports, dated August 11, 2006 and February
21, 2007, on each of the financial statements and financial highlights of
Pioneer Bond Fund as of June 30, 2006 and Pioneer Interest Shares as of
December 31, 2006, respectively, in the Combined Proxy Statement and Prospectus
included in this Registration Statement on Form N-14 of Pioneer Bond Fund. We
further consent to the reference to us under the heading "Representations and
Warranties" (paragraphs 4.1(f) and 4.2(h)) in the Agreement and Plan of
Reorganization included as Exhibit A to the Combined Proxy Statement and
Prospectus.

     We also consent to the reference to our firm under the captions
"Independent Registered Public Accounting Firm" and "Financial Highlights" in
Pioneer Bond Fund's Class A, Class B, Class C, Class R, Class Y and Investor
Class shares Statement of Additional Information on Form N-1A, which was filed
with the Securities and Exchange Commission on October 27, 2006 in
Post-Effective Amendment No. 42 (File No. 002-62436), and is incorporated by
reference into the Statement of Additional Information included in this
Registration Statement on Form N-14 of Pioneer Bond Fund. We further consent to
the incorporation by reference of our reports, dated August 11, 2006 and
February 21, 2007, on each of the financial statements and financial highlights
of Pioneer Bond Fund and Pioneer Interest Shares, respectively, included in the
Annual Reports to Shareholders for the years ended June 30, 2006 and December
31, 2006, respectively, which are also incorporated by reference into the
Statement of Additional Information included in this Registration Statement on
Form N-14 for Pioneer Bond Fund.


                                                          /s/ ERNST & YOUNG LLP


Boston, Massachusetts
June 28, 2007