Exhibit 23.1 Consent of Independent Auditors We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-42145) pertaining to The A Consulting Team, Inc. 1997 Stock Option and Award Plan and Registration Statements on Form S-3 Nos. 333-38330, 333-42744 and 333-51084, of our report dated February 21, 2001, with respect to the consolidated financial statements of The A Consulting Team, Inc. included in the Annual Report (Form 10-K) for the year ended December 31, 2000. ERNST & YOUNG LLP New York, New York March 30, 2001