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Financial Accounting and Advisory Services (FAAS)
As organisations expand into new markets or undertake functional financial transformations, the challenges faced by their accounting and finance teams become more complex. The Financial Accounting and Advisory Services (FAAS) team at Grant Thornton is a multi-disciplinary team that designs and implements creative solutions to address these complexities.
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Fintech
Our Fintech team will be offering you an opportunity to sit with our experienced consultants to discuss your challenges.
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Organisations may undergo some type of dispute or internal investigation during their lifetime. Our Forensic Accounting team can seek evidence that can make the difference between finding the truth or being left in the dark.
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Risk Advisory
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Sustainability Desk
We recognise that businesses are operating at different levels of maturity when it comes to sustainability, and pride ourselves on working with our clients to develop bespoke solutions to their exact needs.
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Company tax
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Private client
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Grant Thornton France completes deal, joins Grant Thornton Advisors multinational platform
CHICAGO and PARIS, October 30, 2025 – 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 customised 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 Grant Thornton International Limited 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 almost 60 offices, the platform delivers a singular client experience that includes enhanced solutions and capabilities, backed by powerful technologies and a roster of 14,000 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.
About Grant Thornton France
Grant Thornton France is a leading Audit and Advisory group, bringing together more than 2,800 professionals across 24 offices in France. The firm operates across four core service lines: Audit, Advisory, Accounting & Reporting Advisory, and Tax & Legal.
With a mission to empower clients to unlock their full potential, Grant Thornton France delivers strategic insight, technical precision, and a collaborative approach. Combining international reach with deep local expertise, the firm provides agile and impactful support to a diverse client base, including dynamic companies, listed firms, public entities, and private businesses.
Grant Thornton France is a member firm of Grant Thornton International Ltd (GTIL) - one of the leading audit and advisory networks in the world. ‘Grant Thornton’ refers to the brand under which the Grant Thornton member firms provide services to their clients and/or refers to one or more member firms. GTIL and the member firms are not a worldwide partnership. GTIL and each member firm is a separate legal entity. Services are delivered by the member firms. GTIL does not provide services to clients.
About New Mountain Capital
New Mountain Capital is a New York-based investment firm that emphasizes business building and growth, rather than debt, as it pursues long-term capital appreciation. The firm currently manages private equity, credit and net lease investment strategies with approximately $55 billion in assets under management.
New Mountain Capital seeks out what it believes to be the highest quality growth leaders in carefully selected industry sectors and then works intensively with management to build the value of these companies. For more information on New Mountain Capital, please visit newmountaincapital.com.
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![Stephen Tennant]()
Stephen Tennant Stephen is the managing partner of Grant Thornton Ireland and previously led the firm’s financial services advisory practice. He has extensive experience in delivering practical solutions to regulatory challenges faced by global financial institutions.View Profile
