Who is Deloitte's audit client?

Microsoft, Procter & Gamble. By reading the profile of Deloitte Audit and Accounting Firm, Deloitte Audit and Accounting Firm is the leading professional service organization in the world and one of the four largest accounting firms in the world. The main customers are Microsoft and Procter & Gamble. Deloitte's clients provide a full range of professional services, including audit and certification, management consulting, risk consulting, financial consulting, tax consulting and business consulting.