1 Exhibit 23 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in the Registration Statements (No.33-98440, 33-98444, 33-98442, 33-98446, 333-21795, 333-70599, 333-35812, and 333-35814) on Form S-8 and the Registration Statement (No. 333-94757) on Form S-3 of CheckFree Corporation of our report dated November 13, 2000 on the combined consolidated balance sheets of MSFDC, L.L.C. and related companies as of June 30, 2000, and July 2, 1999, and the related combined consolidated statements of operations, members' capital deficiency, and cash flows for each of the three years in the period ended June 30, 2000, appearing in this Current Report on Form 8-K of CheckFree Corporation. /s/ Deloitte & Touche Seattle, Washington November 14, 2000