EXHIBIT 15
August 1, 2007
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Commissioners:
We are aware that our report dated August 1, 2007 on our review of interim financial information of MasterCard Incorporated (the Company) for the three and six months ended June 30, 2007 and 2006 and included in the Companys quarterly report on Form 10-Q for the quarter ended June 30, 2007 is incorporated by reference in the Companys Registration Statements on Form S-8 dated June 30, 2006, August 9, 2006 and June 15, 2007.
Very truly yours,
PricewaterhouseCoopers LLP