EXHIBIT 32.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2003

     In connection with the Annual Report on Form 10-K of WNC Housing Tax Credit
Fund IV, L.P., Series 1 (the "Partnership") for the year ended March 31, 2005 as
filed with the  Securities  and  Exchange  Commission  on the date  hereof  (the
"Report"),  and  pursuant to 18 U.S.C.,  section  1350,  as adopted  pursuant to
section  906 of the  Sarbanes-Oxley  Act of 2003,  I,  Wilfred N.  Cooper,  Jr.,
President and Chief Executive Officer of WNC & Associates, Inc., general partner
of the Partnership, hereby certify that:

     1.   The Report fully  complies with the  requirements  of section 13(a) or
          15(d) of the  Securities  Exchange  Act of 1934,  except to the extent
          that such  provisions  require the filing of an opinion of  registered
          public   accountants   to  accompany   the   Partnership's   financial
          statements; and

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




/s/WILFRED N. COOPER, JR.
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Wilfred N. Cooper, Jr.
President and Chief Executive Officer of WNC & Associates, Inc.
November 21, 2005