EXHIBIT 23.3 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference of our reports dated July 16, 1997 (except with respect to Note 18, for which the date is August 20, 1997) included in National Data Corporation's Annual Report on Form 10-K for the year ending May 31, 1997 and to our report dated September 5, 1997 included in National Data Corporation's Registration Statement No. 333-35995 and to all references to our firm included in, or made a part of, this registration statement. /s/ Arthur Andersen LLP Atlanta, Georgia November 10, 1997