Checkfree 10-Q 2007 Q2 Quarterly report

Exhibit 32(b)

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 CheckFree Corporation (the “Company”) on Form 10-Q for the fiscal quarter ended December 31, 2006 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, David E. Mangum, Executive Vice President and Chief Financial Officer of the Company, 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 Company.

Date: February 8, 2007	/s/ David E. Mangum
	David E. Mangum
	Executive Vice President and Chief Financial Officer CheckFree Corporation