Grant Thornton

What Grant Thornton does

Grant Thornton is one of the world's largest accounting and advisory networks, providing audit, tax, and advisory services through member firms across approximately 150 markets and 750+ offices, employing 80,000 professionals globally. Founded in 1904 by Alexander Grant, the network is coordinated through Grant Thornton International Ltd (GTIL), a non-practicing umbrella entity headquartered in London, with services delivered by independently owned member firms. The US member firm alone generated $2.38 billion in annual revenue with 11,093 employees across 56 offices, making it the seventh-largest US accounting firm and a top audit firm for private equity. The network serves mid-market and enterprise clients across asset management, banking, insurance, healthcare, life sciences, private equity, technology, and public sectors.

The firm generates revenue through professional service fees negotiated per engagement across three core pillars: Assurance (statutory audits, IFRS reporting, sustainability assurance, audit quality monitoring), Tax (corporate and business tax, transfer pricing, global mobility, sustainability tax), and Advisory (M&A, transaction advisory, business consulting, cybersecurity, forensic services, valuations, recovery and reorganization). Industry-specific expertise drives cross-selling across service lines. Technology infrastructure includes the proprietary Leap audit platform with quality monitoring tools deployed across member firms, the previously proprietary qm.x audit quality solution (sold to Tellen in 2026), and third-party AI-powered tools including Fenergo for client lifecycle management.

In 2024, New Mountain Capital made a significant growth investment in the US business, enabling an aggressive consolidation strategy to build the Grant Thornton Advisors multinational platform. The platform has executed M&A transactions across Ireland, Netherlands, France, Spain, Belgium, Brazil, Puerto Rico, New Zealand, Poland, and Denmark, with Australia pending at over $800 million reported deal value. Grant Thornton Advisors committed $1 billion to AI tools across member firms and is positioning the network as a coordinated alternative to the Big Four for mid-market and enterprise cross-border engagements.

Name

Grant Thornton

Legal name

Grant Thornton International Ltd

Website

https://grantthornton.global

Company type

Private

Founded year

1904

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Grant Thornton is a global accounting network operating across 150 markets with 80,000 professionals, providing audit, tax, and advisory services to mid-market and enterprise clients. The US member firm generates $2.38 billion in annual revenue, and the network is actively consolidating under a New Mountain Capital-backed multinational platform.

Ownership category

akta.pro rank

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices15 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Audit & Assurance Services: Statutory audits, IFRS reporting, audit quality monitoring, and sustainability assurance services provided to enterprise and mid-market clients globally. This is a recurring, contract-based revenue stream with annual renewal cycles tied to client statutory reporting requirements.
2. Tax Services: Corporate and business tax, direct and indirect international tax, transfer pricing, global mobility services, and sustainability tax advisory. Tax services generate both project-based and recurring revenue from compliance mandates and advisory engagements.
3. Advisory Services: Advisory services spanning business consulting, business process solutions, business risk services, cybersecurity, forensic services, mergers and acquisitions, recovery and reorganisation, transactional advisory, valuations, and sustainability advisory. Revenue is generated through project-based consulting engagements, with M&A and transaction advisory providing significant one-time fees.
4. Industry-Specific Consulting: Services tailored to specific industries including asset management, automotive, banking, healthcare, insurance, life sciences, private equity, real estate, technology, and public sector. Industry vertical specialization drives cross-selling across audit, tax, and advisory.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

Grant Thornton is a global professional services network providing audit and assurance, tax, and advisory services through member firms in approximately 150 markets with 80,000 professionals. Core offerings span statutory audits, IFRS reporting and sustainability assurance, corporate and international tax including transfer pricing, and advisory work covering business consulting, M&A and transaction advisory, cybersecurity, forensic services, valuations, recovery and reorganisation, and ESG/sustainability advisory for enterprise, mid-market, and public-sector clients.

Product overview

Grant Thornton is a global professional services network providing audit, tax, and advisory services through member firms across approximately 150 markets with 80,000 people. The firm operates as a unified network combining global scale with local insights, offering services across three core pillars: Advisory (business consulting, M&A, risk services, cybersecurity, forensic services, sustainability advisory), Assurance (financial statement audits, IFRS guidance, audit quality monitoring, global audit technology, sustainability assurance), and Tax (corporate tax, international tax, transfer pricing, global mobility, sustainability tax). The technology portfolio includes proprietary audit platforms Leap (network-wide audit technology with quality monitoring tools) and qm.x (now Tellen QM following acquisition), which enable AI-powered audit execution and quality management. The network also publishes industry research including the annual Women in Business report, Digital Transformation Survey, and International Business Report (IBR) tracking mid-market optimism and business trends.

Differentiator

Problem solved

Functional benefit

Products and services

• Advisory Services Comprehensive advisory services for enterprise and mid-market clients, including business consulting, business process solutions, business risk services, cybersecurity, forensic services, M&A, recovery and reorganisation, transactional advisory services, valuations, and sustainability advisory. Delivered through member firms across 150 markets.
• Assurance Services Statutory audit, IFRS reporting, audit quality monitoring, sustainability assurance, and global audit technology services for enterprise and mid-market clients globally. Includes recurring annual audit cycles and emerging sustainability assurance offerings.
• Tax Services Corporate and business tax, direct and indirect international tax, global mobility, transfer pricing, Africa tax desk, and sustainability tax services for multinational and mid-market clients. Generates both recurring compliance revenue and project-based advisory revenue.
• Leap Audit Technology Platform Proprietary global audit technology platform that improves and monitors audit quality across the network. Includes a quality monitoring tool for reviews of quality control systems and engagements and root-cause analysis of quality events. Used internally by Grant Thornton member firms to standardize audit execution.
• Leccia Blockchain Audit Service Blockchain-based audit service in which Grant Thornton verifies blockchain transaction processes by pulling transactions from chains such as Cardano, cutting institutional audit costs by nearly 50%. Aimed at crypto and digital-asset institutional clients.
• Grant Thornton & Associados Legal Practice (Portugal) Legal services practice launched in Portugal in March 2026 as a multidisciplinary extension to Grant Thornton's audit, tax, and advisory offerings, providing integrated consulting to clients.

Quantifiable outcome

• 76% of mid-market business leaders globally are optimistic about the economy — an all-time high per the IBR 2025 survey
• +3 more outcomes

Named customers3 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability10 records

Feature4 records

Partnerships

Twelve partnerships are on record, tiered strategic, core and minor.

• AstroLabsstrategicStrategic or Co-development Partner · 8 April 2026Grant Thornton and AstroLabs announced a strategic collaboration in April 2026 to provide end-to-end market entry and growth support for foreign companies expanding into Saudi Arabia. The partnership combines AstroLabs' entity setup, regulatory compliance, and operational expertise with Grant Thornton's tax, audit, advisory, and local content services. Foreign investment licenses in Saudi Arabia nearly doubled from ~8,500 in 2023 to nearly 20,000 in 2024.
• KinglandcoreTechnology or Integration · 30 March 2026Kingland Systems and Grant Thornton International celebrated 20 years of partnership in March 2026. Grant Thornton member firms worldwide use Kingland's financial interest tracking solution to monitor restricted financial interests. The collaboration has been enhanced through new direct integration with brokerage firms, enabling automatic disclosure of professionals' financial interests. Both companies are committed to continued innovation supporting Grant Thornton's global independence compliance obligations.
• FenergostrategicTechnology or Integration · 4 March 2026Fenergo, an AI-powered client lifecycle management and compliance solutions provider, was selected by Grant Thornton UK in March 2026 to support client onboarding, due diligence, and compliance processes. The platform centralizes and streamlines operations while ensuring compliance with UK Financial Conduct Authority anti-money laundering requirements. The partnership represents Fenergo's strategic expansion into the professional services sector.
• TellenstrategicTechnology or Integration · 9 February 2026Tellen acquired Grant Thornton's qm.x audit quality solution in February 2026 and entered a multi-year commercial agreement to integrate it into Tellen's AI platform. Grant Thornton agreed to continue using the solution as it integrates into Tellen's platform and to promote its adoption across the GTIL network spanning over 150 markets. Tellen will rebrand the platform as Tellen QM and expand its AI-enabled capabilities to support accounting firms in managing audit execution and quality management under IAASB's ISQM 1, AICPA's SQMS 1, and PCAOB's QC 1000.
• Grant Thornton PolandcoreStrategic or Co-development Partner · 23 January 2026Grant Thornton Poland completed its transaction joining the multinational platform in January 2026, bringing over 1,200 professionals and approximately $70 million in annual revenue. The firm tripled its headcount and quintupled revenues over the past decade through organic growth and M&A, serving over 3,000 clients annually.
• Grant Thornton New ZealandcoreStrategic or Co-development Partner · 26 December 2025Grant Thornton New Zealand completed a transaction joining the Grant Thornton Advisors multinational platform in December 2025, extending the platform's reach into the Asia Pacific region. The New Zealand firm brought US$40+ million in annual revenue and more than 300 professionals to the platform.
• ThoughtLab (AI Wealth Management Study)minorStrategic or Co-development Partner · 4 December 2025Grant Thornton co-sponsored a global ThoughtLab study on AI adoption in the wealth and asset management industry, conducted in collaboration with FNZ, ServiceNow, Amazon Web Services, LSEG, and Publicis Sapient. The study surveyed 500 financial institutions across 16 markets and found that 73% of executives view AI as critical to their business's future.
• Grant Thornton BrazilcoreStrategic or Co-development Partner · 19 November 2025Grant Thornton Advisors expanded to Brazil as a top-five firm in the country with nearly 2,000 professionals and over $80 million in annual revenue. The transaction extended the platform's footprint into Latin America's largest market, with closing expected later in 2025.
• JS Bank and AstrikminorStrategic or Co-development Partner · 16 October 2025JS Bank in Karachi partnered with Astrik and Grant Thornton in October 2025 to develop an IFRS 9-compliant automation system for credit risk management. The system replaces manual processes and aims to improve reporting accuracy, risk management, and decision-making capabilities.
• StaxstrategicStrategic or Co-development Partner · 17 August 2025Grant Thornton US's advisory division acquired Stax, a Boston-based M&A consulting firm, in August 2025 to enhance commercial diligence services and expand its client base in private equity and investment banking sectors. The deal closed later in 2025.
• AuxisstrategicImplementation/ SI/ Consulting Partner · 3 August 2025Grant Thornton Advisors joined forces with Auxis, a nearshore professional services provider, in August 2025 through a transformational deal. Auxis strengthens the platform's nearshore capabilities, complementing the existing multinational advisory offering.
• BinancestrategicOthers · 4 September 2024Binance, the world's largest cryptocurrency exchange, appointed Grant Thornton Singapore as its Global Accounting and Tax Advisor in September 2024. Grant Thornton provides accounting and tax advisory guidance to Binance globally.

Scale indicators20 records

Recent moves16 records

Expansion highlights9 records

Direct peers

• Mazars: Mazars is an international mid-tier accounting and advisory firm operating across 90+ markets with audit, tax, and consulting services. It directly competes with Grant Thornton for mid-market and large enterprise audit and advisory mandates, particularly in Europe.
• RSM International: RSM is a global mid-tier accounting and advisory network serving mid-market companies with audit, tax, and consulting services. It directly competes with Grant Thornton for the same mid-market segment globally and is similarly positioned as an alternative to Big Four.
• Crowe Global: Crowe is a global mid-tier accounting network providing audit, tax, and advisory services across 130+ markets. It directly competes with Grant Thornton for mid-market audit, tax, and advisory engagements globally.
• Baker Tilly: Baker Tilly is a global mid-tier accounting network offering audit, tax, and advisory services across 140+ territories. It directly competes with Grant Thornton in the mid-market segment and represents an alternative non-Big-Four choice for multinational clients.
• BDO Global: BDO is the closest direct peer to Grant Thornton as a mid-tier global accounting network offering audit, tax, and advisory services across 160+ markets. Both networks compete head-to-head for mid-market multinational audit and advisory mandates and are consistently ranked as the top two non-Big-Four global accounting networks.

Regional players

• CliftonLarsonAllen (CLA): CLA is a top-10 US accounting firm providing audit, tax, and advisory services primarily to US middle-market clients. It competes with Grant Thornton US in the US mid-market segment but is more regionally focused than the global Grant Thornton network.

Broad incumbents

• PwC: PwC is a Big Four global professional services network delivering audit, tax, and advisory services across 150+ markets. It directly competes with Grant Thornton for multinational audit and advisory mandates and represents the dominant mid-market alternative in many geographies.
• Ernst & Young (EY): EY is a Big Four global professional services firm providing audit, tax, transaction, and advisory services. It competes with Grant Thornton across the mid-market and large enterprise segments globally and is profiled alongside Grant Thornton in insolvency services rankings.
• KPMG: KPMG is a Big Four global professional services network offering audit, tax, and advisory services. It competes with Grant Thornton for mid-market and large enterprise audit and advisory engagements and is referenced alongside Grant Thornton in insolvency services market analyses.
• Deloitte: Deloitte is one of the Big Four global accounting and advisory networks offering audit, tax, consulting, and advisory services worldwide. It is Grant Thornton's primary competitor at the upper end of the mid-market and enterprise segments, with significantly larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/grantthornton
• LinkedInlinkedin.com/company/grant-thornton-llp

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Subsidiaries15 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Grant Thornton