CHICAGO and PARIS — Grant Thornton France has completed a transaction that makes it part of the Grant Thornton Advisors multinational platform — which was established in January 2025 with the support of an investor group led by New Mountain Capital.
This represents a significant milestone in the platform’s ongoing expansion, further strengthening its seamless connectivity and capabilities across the Americas, Europe and the Middle East. It builds on the recently announced platform acquisitions of Grant Thornton member firms in Ireland, the United Arab Emirates, Spain, the Netherlands, Switzerland/ Liechtenstein, Belgium, the Channel Islands, the Cayman Islands and Luxembourg.
The platform also includes Auxis, a pioneer in outsourcing and business modernization services, and Stax, which specializes in commercial due diligence and value creation.
Grant Thornton France stands as one of the premier accounting and advisory firms in a key global financial center. It has demonstrated consistent outsized growth, becoming one of the largest firms in the Grant Thornton International Limited (GTIL) network — with 2,800 employees across 24 offices. It is highly regarded for its commitment to quality, clients and customized solutions that drive measurable outcomes.
Through this transaction, the Grant Thornton Advisors platform will accelerate its growth in the French market. Clients will benefit from access to an even more extensive array of industry expertise and innovative solutions, amplified by substantial investments in technology and talent.
It remains part of the GTIL network, which comprises member firms in more than 150 markets worldwide.
The transaction was originally announced in September of 2025.
About Grant Thornton
Grant Thornton delivers professional services in the US through two specialized entities: Grant Thornton LLP, a licensed, certified public accounting (CPA) firm that provides audit and assurance services ― and Grant Thornton Advisors LLC (not a licensed CPA firm), which exclusively provides non-attest offerings, including tax and advisory services.
In January 2025, Grant Thornton Advisors LLC formed a multinational, multidisciplinary platform. The platform offers a premier advisory and tax practice, as well as independent audit practices. With offices across the Americas, Europe and the Middle East, the platform delivers a singular client experience that includes enhanced solutions and capabilities, backed by powerful technologies and a roster of more than18,000 quality-driven professionals enjoying exceptional career-growth opportunities and a distinctive cross-border culture.
Grant Thornton is part of the Grant Thornton International Limited network, which provides access to its member firms in more than 150 global markets.
Grant Thornton LLP, Grant Thornton Advisors LLC and their respective subsidiaries operate as an alternative practice structure (APS). The APS conforms with applicable laws, regulations and professional standards, including those from the American Institute of Certified Public Accountants.
“Grant Thornton” refers to the brand under which the member firms in the Grant Thornton International Ltd (GTIL) network provide services to their clients and/or refers to one or more member firms. Grant Thornton LLP and Grant Thornton Advisors LLC serve as the U.S. member firms of the GTIL network. GTIL and its member firms are not a worldwide partnership and all member firms are separate legal entities. Member firms deliver all services; GTIL does not provide services to clients.
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