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United States

Grant Thornton LLP is the US member firm of Grant Thornton International Ltd, one of the world’s leading organisations of independent audit, tax and advisory firms. The firm was founded in 1924 as Alexander Grant & Co. In 1980, we joined with other international accounting firms to form Grant Thornton International Ltd. Our people and our services are built around our clients’ locations, service needs and industries. Collaboration and coordination across the geographic, service-line/industry matrix enables us to provide the personalised attention and a high level of client service for which Grant Thornton is known. 
“We unite with all Grant Thornton member firms in ‘living’ our global values: unite through global collaboration, demonstrate leadership in all we do, promote a consistent culture of excellence, act with agility, ensure deep respect for people and take responsibility for our actions. For all member firms, integrity and excellence are consistent, cultural values.”

Seth Siegel, CEO


Key contacts

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Why Grant Thornton

Our clients get more one-on-one time with our partners and faster responses to the critical issues that impact their operation. With more on-the-ground time on site, our partners gain valuable knowledge about our clients’ environment.

We’re a big organisation. Our clients can expect the resources, skills and experience of a much larger firm, but with the accessibility and attention of a much smaller firm.