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 on Form 10-Q of Merrill Lynch
Preferred Capital Trust IV and Merrill Lynch Preferred Funding IV, L.P.
(the "Partnership") for the period ended March 28, 2008 as filed with
the Securities and Exchange Commission on the date hereof (the "Report"),
I, Gary Carlin, Controller of Merrill Lynch & Co., Inc., the General
Partner of the Partnership, certify, 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.




                              MERRILL LYNCH PREFERRED FUNDING IV, L.P.

                              By:  MERRILL LYNCH & CO., INC., as General Partner


                              By:  /s/ GARY CARLIN
                                   ---------------------------------------------
                              Name:    GARY CARLIN *
                              Title:   Controller, Merrill Lynch & Co., Inc.








Dated: May 9, 2008
_____________________

*  Gary Carlin functions as the equivalent of the Chief Executive Officer
   and Chief Financial Officer of the Partnership for purposes of Section 906
   of the Sarbanes-Oxley Act of 2002.