BOSTON FINANCIAL QUALIFIED HOUSING TAX CREDITS L.P. IV
                             (A Limited Partnership)


                                  EXHIBIT 32.1


                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
                    AS ADOPTED PURSUANT TO SECTION 906 OF THE
                           SARBANES-OXLEY ACT OF 2002


In connection with the Quarterly Report of Boston Financial Qualified Housing
Tax Credits L.P. IV (the "Partnership") on Form 10-Q for the period ended
September 30, 2008 as filed with the Securities and Exchange Commission on the
date hereof (the "Report"), the undersigned, the Principal Executive Officer and
Principal Financial Officer, hereby certifies pursuant to 18 U.S.C. Section
1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:

1.   the Report fully complies with the  requirements  of Section 13(a) or 15(d)
     of the Securities  Exchange Act of 1934; and

2.   the information contained in the Report fairly presents, in all material
     respects, the financial condition and results of operations of the
     Partnership.



                                          /s/Greg Judge
                                -------------------------------------------
                                            Greg Judge
                                            Principal Executive Officer and
                                            Principal Financial Officer
                                            Arch Street VIII, Inc., as
                                            Managing General Partner of
                                            Boston Financial Qualified
                                            Housing Tax Credits L.P. IV


                                             Date:  November 14, 2008


A signed original of this written statement required by section 906 has been
provided to the Partnership and will be retained by the Partnership and
furnished to the Securities and Exchange Commission or its staff upon request.







                 BOSTON FINANCIAL QUALIFIED HOUSING TAX CREDITS L.P. IV
                             (A Limited Partnership)

                                  EXHIBIT 32.2


                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
                    AS ADOPTED PURSUANT TO SECTION 906 OF THE
                           SARBANES-OXLEY ACT OF 2002


In connection with the Quarterly Report of Boston Financial Qualified Housing
Tax Credits L.P. IV (the "Partnership") on Form 10-Q for the period ended
September 30, 2008 as filed with the Securities and Exchange Commission on the
date hereof (the "Report"), the undersigned, the Principal Executive Officer and
Principal Financial Officer, hereby certifies pursuant to 18 U.S.C. Section
1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:

1.   the Report fully complies with the  requirements  of Section 13(a) or 15(d)
     of the Securities  Exchange Act of 1934; and

2.   the information contained in the Report fairly presents, in all material
     respects, the financial condition and results of operations of the
     Partnership.



                                          /s/Greg Judge
                              ------------------------------------------
                                             Greg Judge
                                             Principal Executive Officer and
                                             Principal Financial Officer
                                             Arch Street VIII, Inc., as
                                             Managing General Partner of
                                             Boston Financial Qualified
                                             Housing Tax Credits L.P. IV


                                              Date:  November 14, 2008


A signed original of this written statement required by section 906 has been
provided to the Partnership and will be retained by the Partnership and
furnished to the Securities and Exchange Commission or its staff upon request.