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                                  UNITED STATES
                       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

        DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): APRIL 26, 2006

                             CALLIDUS SOFTWARE INC.
               (Exact Name of Registrant as Specified in Charter)

            Delaware                   000-50463               77-0438629
  (State or Other Jurisdiction        (Commission             (IRS Employer
       of Incorporation)              File Number)         Identification No.)

        160 W. Santa Clara Street, Suite 1500
                     San Jose, Ca                                95113
       (Address of Principal Executive Offices)               (Zip Code)

                                 (408) 808-6400
              (Registrant's Telephone Number, Including Area Code)

                                 Not Applicable
          (Former Name or Former Address, if Changed Since Last Report)

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Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ]  Written communications pursuant to Rule 425 under the Securities
     Act (17 CFR 230.425)

[ ]  Soliciting material pursuant to Rule 14a-12 under the Exchange
     Act (17 CFR 240.14a -12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d -2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e -4(c))

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ITEM 2.02 RESULTS OF OPERATIONS AND FINANCIAL CONDITION.

     On April 26, 2006, Callidus Software Inc. issued a press release announcing
its financial results of and for the quarter ended March 31, 2006. The press
release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The
information furnished in this report, including the exhibit, shall not be deemed
to be incorporated by reference into Callidus Software Inc.'s filings with the
SEC under the Securities Act of 1933 and shall not be deemed to be "filed" with
the SEC under the Securities Exchange Act of 1934.

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS.

     (d) Exhibits.

     99.1 Earnings Press Release, dated April 26, 2006



                                   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.

                                             CALLIDUS SOFTWARE INC.


Date: April 26, 2006                         By:    /s/ Ronald J. Fior
                                                    ----------------------------
                                             Name:  Ronald J. Fior
                                             Title: Vice President, Finance and
                                                    Chief Financial Officer



                                  EXHIBIT INDEX

99.1     Earnings Press Release, dated April 26, 2006.