EX-23 6 d12912exv23.txt CONSENT OF ERNST & YOUNG LLP EXHIBIT 23 Consent of Ernst & Young LLP, Independent Auditors We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-98929) pertaining to the Tyler Technologies, Inc. Stock Option Plan of our report dated February 20, 2004, with respect to the consolidated financial statements and schedule of Tyler Technologies, Inc. and subsidiaries included in the Annual Report (Form 10-K) for the year ended December 31, 2003. ERNST & YOUNG LLP Dallas, Texas February 26, 2004