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Grant Thornton is a U.S. member firm of Grant Thornton International Ltd, providing audit, assurance, tax, and advisory services. The firm specializes in strategic assurance and SOC services using proprietary automation like SOC.x for efficient compliance reporting. With over 9,000 professionals across 46 offices, it serves diverse industries including technology, financial services, and healthcare.
Peer review: AICPA peer-reviewed (pass). Firm tier: Mid-tier firm.
Services: SOC 1, SOC 2 Type I, SOC 2 Type II.
Offices: New York NY; Atlanta GA; Los Angeles CA; Dallas TX; Boston MA; Denver CO.
Industries served: Technology, Financial services, Healthcare, Manufacturing, Real estate.
Grant Thornton provides SOC 1, SOC 2 (Type 1 and Type 2) examinations through its assurance practice. The firm uses its proprietary SOC.x automation platform and a 'test once apply many' approach to SOC compliance reporting. It serves technology, financial services, healthcare, manufacturing, and real estate clients.
Grant Thornton does not publish SOC 2 pricing; quotes are scoped per engagement. For market context, one 2026 industry guide (Strac) puts mid-tier national firms, naming Grant Thornton among them, at $50K to $120K for SOC 2 audit fees. Checked 2026-11-04.
Yes. Grant Thornton is an AICPA-accredited firm and has passed its peer review. The firm's peer review record is available through the AICPA peer review portal under Firm #900010026656.
Grant Thornton does not publish a specific typical timeline. As a national mid-tier firm with 9,000+ professionals and proprietary SOC.x automation, its structured process typically runs 8–14 weeks for fieldwork and reporting; the full engagement including the observation period runs 6–9 months.
Grant Thornton announced a Hyperproof alliance in September 2022, and Hyperproof lists Grant Thornton in its partner directory. We found no public Vanta, Drata or Secureframe partnership for Grant Thornton's US firm. The firm also uses its own SOC.x automation platform. Checked 2026-11-04.
Grant Thornton's most frequently compared alternatives are Schellman, A-LIGN, and BDO USA. For buyers who need a large national firm, RSM US and Moss Adams (now part of Baker Tilly) are comparable mid-tier alternatives; Schellman and A-LIGN are IT-audit specialists with stronger SOC 2 brand recognition.