EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (File No. 333-68255) of Tier Technologies, Inc. of our report dated January 29, 1999 relating to the financial statements of MIDAS Computer Software Limited, which appears in the Current Report on Form 8-K/A of Tier Technologies, Inc. dated February 12, 1999. /s/ Grant Thornton Grant Thornton Birmingham, England February 12, 1999