What Grant Thornton Finland does

Grant Thornton Finland (legal entity Grant Thornton Oy) is a Helsinki-headquartered professional services firm established in 1993 and operating as a member firm of the Grant Thornton International Ltd (GTIL) global network, which spans over 150 countries and 68,000 professionals. The firm employs approximately 80 people in Finland, including 12 partners, across offices in Helsinki and Turku, and serves more than 2,000 clients through five core service lines: audit (statutory audit, IFRS, IT audit), tax (corporate, international, transfer pricing, VAT, personal tax), advisory/deal advisory (transaction advisory, valuation, corporate finance, M&A), outsourcing (payroll, bookkeeping, interim CFO/controller services), business risk services (internal audit, forensic, health checks), sustainability/CSRD reporting and assurance, and information governance/cybersecurity. Customer segments are primarily owner-driven companies, foreign multinational subsidiaries operating in Finland, family businesses, and foundations and associations.

The firm operates a relationship-based enterprise go-to-market model, delivering services directly through its partners and senior professionals rather than through digital channels or volume self-service. Revenue is generated on a quote-based professional services model, with engagements typically structured as multi-year contracts scoped to client complexity. The business leverages the GTIL brand (over 100 years of global history, Mobius trademark, 'Instinct for Growth' tagline) and cross-border network to serve multinational clients. Competitive differentiation rests on international reach, KHT and KRT-certified auditor talent, uniform audit methodology, and a flexible service portfolio tailored to mid-market and owner-led Finnish companies underserved by Big Four firms.

A merger with Grant Thornton Sweden AB and the addition of newly established Norway operations was announced for June 2026, which will consolidate the Finnish entity into a 1,500+ employee Nordic platform alongside Finland, Sweden, and Norway. The firm has also expanded its sustainability/CSRD assurance practice (leveraging multiple KRT-certified partners) and added a cybersecurity advisory offering, positioning for regulatory-driven demand growth.

Name

Grant Thornton Finland

Legal name

Grant Thornton Oy

Website

https://grantthornton.fi

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

51–100 employees

Short description

Grant Thornton Finland is a Helsinki-based audit, tax, advisory, and outsourcing professional services firm with ~80 employees and 12 partners, serving 2,000+ clients as a member firm of the Grant Thornton International network, set to merge with Grant Thornton Sweden and Norway operations in June 2026.

Ownership category

akta.pro rank

Headquarters

HQ city

Helsinki

HQ country

Finland

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Audit Services: Statutory audit, IFRS services, IT audit and other certification services
2. Tax Services: Corporate tax advisory, international tax, transfer pricing, VAT services, personal tax and remuneration
3. Advisory/Deal Advisory: Transaction advisory services, valuation services, corporate finance, M&A advisory
4. Outsourcing Services: Financial management outsourcing, payroll, accounting, employer solutions, interim CFO and controller services
5. Business Risk Services: Internal audit services, forensic and dispute services, health check assessments
6. Sustainability Services: Sustainability advisory, sustainability reporting and assurance per CSRD requirements
7. Information Governance Services: Project management services, cyber security services

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Grant Thornton Finland (Grant Thornton Oy) is a professional services firm providing audit, tax, M&A advisory, financial outsourcing, business risk, sustainability, and information governance services. The firm serves Finnish owner-driven companies, subsidiaries of foreign multinationals, and foundations, delivering integrated assurance and advisory engagements through its partnership-based team.

Product overview

Grant Thornton Finland operates as a professional services firm offering a unified portfolio of audit, tax, advisory, and outsourcing services. The core offerings include Tilintarkastus (Audit), Veropalvelut (Tax Advisory), Neuvontapalvelut (Advisory/M&A), Taloushallinnon ulkoistaminen (Outsourcing), Riskienhallintapalvelut (Business Risk Services), Vastuullisuus- ja kestävyyspalvelut (Sustainability Services), and Tiedonhallintapalvelut (Information Governance/Cybersecurity). These services work together as an integrated professional services offering rather than as a software product platform with separate modules.

Differentiator

Problem solved

Functional benefit

Products and services

• Tilintarkastus (Audit Services) Statutory and voluntary audit, IFRS audit, IT audit, and other certification services that verify financial information and build stakeholder credibility for companies and organisations.
• Veropalvelut (Tax Advisory) Corporate tax advisory including international tax, transfer pricing, VAT, personnel taxation, corporate taxation, and legal services for businesses operating in Finland and internationally.
• Yritysjärjestelyt (Transaction Advisory / M&A) Transaction advisory, due diligence, business valuations, and corporate finance services supporting mergers, acquisitions, divestitures, and business restructuring for owner-driven companies and corporates.
• Taloushallinnon ulkoistaminen (Outsourcing) Financial management outsourcing covering payroll, bookkeeping, international expansion support, employer services, and interim CFO/controller engagements for companies needing flexible finance function capacity.
• Riskienhallintapalvelut (Business Risk Services) Internal audit, forensic services, expert opinions, and health check assessments that help organisations identify, manage, and remediate business and operational risks.
• Vastuullisuus- ja kestävyyspalvelut (Sustainability Services) Sustainability reporting and assurance under CSRD/ESRS, sustainability advisory, double materiality assessments, and support for organisations transitioning to sustainable operating models.
• Tiedonhallintapalvelut (Information Governance & Cybersecurity) Project management services and cybersecurity advisory that protect information assets, strengthen governance, and ensure regulatory compliance for Finnish organisations.

Quantifiable outcome

• Industry-leading NPS and service quality rankings in Taloustutkimus 'Työelämän päättäjät' study
• +1 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Three partnerships are on record, tiered core and flagship.

• Grant Thornton Sweden ABcoreStrategic or Co-development Partner · 15 June 2026Grant Thornton Finland (Grant Thornton Oy with ~80 employees) is merging with Grant Thornton Sweden AB. Together with newly established Norway operations, this strengthens Grant Thornton's Nordic offering, with the number of employees in the Nordics exceeding 1,500 people.
• Grant Thornton NorwaycoreStrategic or Co-development PartnerNewly established Grant Thornton Norway operations, combining with Finland and Sweden to form a unified Nordic presence of over 1,500 employees.
• Grant Thornton International Ltd (GTIL)flagshipStrategic or Co-development PartnerGrant Thornton Finland is a member firm of Grant Thornton International, a network of independent assurance, tax and advisory firms comprising over 68,000 people in 138 countries. GTIL is a non-practicing, international umbrella entity.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• KPMG Finland: KPMG Finland is the Finnish Big 4 audit, tax, and advisory firm. While overlapping in service lines with Grant Thornton Finland, it serves larger enterprise clients and competes primarily at the upper end of the audit and advisory market.
• Deloitte Finland: Deloitte Finland is one of the four largest professional services firms in Finland. It offers a broader portfolio than Grant Thornton Finland and competes for advisory, audit, and outsourcing work across both enterprise and mid-market segments.
• EY Finland: EY Finland is the Finnish Big 4 firm with strong audit, tax, and transaction advisory capabilities. It competes with Grant Thornton Finland primarily for upper-mid-market and large-cap audit engagements.
• PwC Finland: PwC Finland is the Finnish Big 4 firm and a global leader in audit, tax, and advisory services. It competes with Grant Thornton Finland on larger mandates but also competes for mid-market and subsidiary audit work.

Direct peers

• BDO Finland: BDO Finland is the Finnish member firm of BDO Global, an international mid-tier accounting and advisory network. It is a direct peer to Grant Thornton Finland, offering a comparable portfolio of audit, tax, and advisory services to Finnish mid-market clients.
• Mazars Finland: Mazars Finland is the Finnish office of Mazars, a top-10 international audit, tax, and advisory network. It directly competes with Grant Thornton Finland across mid-market audit, tax advisory, and outsourcing engagements.
• Rödl & Partner: Rödl & Partner is a German-originated international mid-sized professional services firm with Nordic activity. It provides audit, tax, legal, and advisory services to mid-market clients in a model that closely parallels Grant Thornton Finland's integrated offering.
• RSM Finland: RSM Finland is the Finnish member of RSM International, a mid-tier accounting network focused on mid-market companies. It competes head-to-head with Grant Thornton Finland for owner-driven company and subsidiary audit and advisory work.
• Baker Tilly Finland: Baker Tilly Finland is the Finnish member of Baker Tilly International, a mid-tier audit, tax, and advisory network. It is structurally and competitively analogous to Grant Thornton Finland, serving similar mid-market clients.
• PKF Finland: PKF Finland is part of the PKF International accounting network and provides audit, tax, and advisory services to Finnish SMEs and mid-market companies—a closely comparable profile to Grant Thornton Finland's service mix and target segments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/grantthorntonfinland
• LinkedInlinkedin.com/company/grant-thornton-finland

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 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 Finland