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

                                  EXHIBIT 31.1

I, Greg Judge, certify that:

1.       I have reviewed this quarterly report on Form 10-Q of Boston Financial
         Qualified Housing Tax Credits L.P. IV;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations and cash flows
         of the registrant as of, and for, the periods presented in
         this report;

4.       I am responsible for establishing and maintaining disclosure controls
         and procedures (as defined in Exchange Act Rules 13a-15(e) and
         15d-15(e)) and internal control over financial reporting (as defined
         in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and
         have:

    (a)  Designed such disclosure controls and procedures, or caused such
         disclosure controls and procedures to be designed under our
         supervision, to ensure that material information relating to the
         registrant, including its consolidated subsidiaries, is made known
         to us by others within those entities, particularly during the period
         in which this report is being prepared;

     (b)  Designed such internal control over financial reporting, or caused
          such internal control over financial reporting to be designed under
          our supervision, to provide reasonable assurance regarding the
          reliability of finacial reporting and the preparation of finacial
          statements for external purposes in accordance with generally
          accepted accounting principles.

     (c)  Evaluated the effectiveness of the registrant's disclosure
          controls and procedures and presented in this report our conclusions
          about the effectiveness of the disclosure controls and procedures, as
          of the end of the period covered by this report based on such
          evaluation; and

     (d)  Disclosed in this report any change in the registrant's internal
          control over financial reporting that occurred during the
          registrant's most recent fiscal quarter (the registrant's fourth
          fiscal quarter in the case of an annual report) that has materially
          affected,or is reasonably likely to materially affect, the
          registrant's internal control over financial reporting; and

5.   I have disclosed, based on our most recent evaluation of internal control
     over financial reporting, to the registrant's auditors and the audit
     committee of the registrant's board of directors (or persons performing the
     equivalents functions):

     (a) all significant deficiencies and material weaknesses in the design or
         operation of internal control over financial reporting which are
         reasonably likely to adversely affect the registrant's ability to
         record, process, summarize and report financial information;
         and

     (b) any fraud, whether or not material, that involves management or other
         employees who have a significant role in the registrant's
         internal control over financial reporting.


Date:    August 14, 2008


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




             BOSTON FINANCIAL QUALIFIED HOUSING TAX CREDITS L.P. IV
                             (A Limited Partnership)
                                  EXHIBIT 31.2

I, Greg Judge, certify that:

1.       I have reviewed this quarterly report on Form 10-Q of Boston Financial
         Qualified Housing Tax Credits L.P. IV;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations and cash flows
         of the registrant as of, and for, the periods presented in
         this report;

4.       I am responsible for establishing and maintaining disclosure controls
         and procedures (as defined in Exchange Act Rules 13a-15(e) and
         15d-15(e)) and internal control over financial reporting (as defined
         in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and
         have:

    (a)  Designed such disclosure controls and procedures, or caused such
         disclosure controls and procedures to be designed under our
         supervision, to ensure that material information relating to the
         registrant, including its consolidated subsidiaries, is made known
         to us by others within those entities, particularly during the period
         in which this report is being prepared;

     (b)  Designed such internal control over financial reporting, or caused
          such internal control over financial reporting to be designed under
          our supervision, to provide reasonable assurance regarding the
          reliability of finacial reporting and the preparation of finacial
          statements for external purposes in accordance with generally
          accepted accounting principles.

     (c)  Evaluated the effectiveness of the registrant's disclosure
          controls and procedures and presented in this report our conclusions
          about the effectiveness of the disclosure controls and procedures, as
          of the end of the period covered by this report based on such
          evaluation; and

     (d)  Disclosed in this report any change in the registrant's internal
          control over financial reporting that occurred during the
          registrant's most recent fiscal quarter (the registrant'sfourth fiscal
          quarter in the case of an annual report) that has materially affected,
          or is reasonably likely to materially affect, the registrant's
          internal control over financial reporting; and

5.   I have disclosed, based on our most recent evaluation of internal control
     over financial reporting, to the registrant's auditors and the audit
     committee of the registrant's board of directors (or persons performing the
     equivalents functions):

     (a) all significant deficiencies and material weaknesses in the design or
         operation of internal control over financial reporting which are
         reasonably likely to adversely affect the registrant's ability to
         record, process, summarize and report financial information;
         and

     (b) any fraud, whether or not material, that involves management or other
         employees who have a significant role in the registrant's
         internal control over financial reporting.


Date:    August 14, 2008