EXHIBIT 32.a

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 Capital Tax Credit Fund IV L.P. (the "Fund") on Form 10-Q for the period ended December 31, 2008 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, John P. Manning, Principal Executive Officer of the general partner of the general partner of the Fund's general partner, C&M Management Inc., certify, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge, after due inquiry:

(1)	The Report fully complies with the requirements of section 13(a)-15 or 15(d)-15 of the Securities and 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 Fund.

Date:
February 17, 2009	/s/ John P. Manning
	John P. Manning
	Principal Executive Officer

A signed original of this written statement required by Section 906, or other

document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Fund and will be retained by the Fund and furnished to the Securities and Exchange Commission or its staff upon request.