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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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                                    FORM 8-K

                                 CURRENT REPORT
                       PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

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                        DATE OF REPORT: DECEMBER 16, 1997

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                              CHECKFREE CORPORATION
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

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    Delaware                      0-26802                     31-1013521
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(STATE OR OTHER            (COMMISSION FILE NO.)            (IRS EMPLOYER
 JURISDICTION OF                                         IDENTIFICATION NUMBER)
INCORPORATION OR
  ORGANIZATION)

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                           4411 East Jones Bridge Road
                             Norcross, Georgia 30092
                                 (770) 441-3387
               (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER
                       INCLUDING AREA CODE OF REGISTRANT'S
                          PRINCIPAL EXECUTIVE OFFICES)

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                                 Not Applicable
          (FORMER NAME OR FORMER ADDRESS, IF CHANGED SINCE LAST REPORT)

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ITEM 5.

         Checkfree Corporation, a Delaware corporation (the "Company"), has
amended its stockholder rights plan. Amendment No. 2 to the Rights Agreement,
dated October 28, 1997, by and between the Company and The Fifth Third Bank, as
Rights Agent, is attached as Exhibit 4.1 hereto and is incorporated herein by
reference.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

      (A) EXHIBITS.

      Exhibit No.                            Description

          4.1           Amendment No. 2 to the Rights Agreement, dated as of
                        October 28, 1997, between Checkfree Corporation and The
                        Fifth Third Bank, as Rights Agent.


                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                             CHECKFREE CORPORATION



Date: December 16, 1997      By:  /s/ Peter F. Sinisgalli
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                                  Peter F. Sinisgalli, Chief Operating Officer

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                                  EXHIBIT INDEX


Exhibit No.                           Description

4.1           Amendment No. 2 to the Rights Agreement, dated as of October 28,
              1997, between Checkfree Corporation and The Fifth Third Bank, as
              Rights Agent.