Grant Thornton LLP is the U.S. member firm of Grant Thornton International Ltd, offering audit, tax, and advisory services. They serve a broad range of clients, including publicly and privately held companies, government agencies, and financial institutions[1][3][5]. Their services include audit/assurance, tax consulting, and advisory services like mergers & acquisitions and IT[1]. The unique selling proposition is personalized client service with more partner interaction, providing practical solutions and a high return on investment[1][3]. Their approach emphasizes accessibility and flexibility, similar to a smaller firm, while leveraging the resources of a larger organization[3][5].