Dominic Tarn
Head Writer - ReVerb
11.15.2026
Last updated: November 14, 2026
The best accounting firms in Helsinki for 2027 are KPMG, PwC, EY, Deloitte, BDO, Grant Thornton, Accountor, Talenom, Azets and Baker Tilly. The Big Four lead in audit and tax for large groups, while Accountor, Talenom and Azets are the main outsourced bookkeeping and payroll providers.
Finland’s corporate tax rate is 20% in 2026 and falls to 18% from 2027, so good tax advice matters.
How We Chose
We reviewed each firm’s Finnish presence, services, client size and international network, and grouped audit firms and outsourced accounting providers. Read more about how we research and rank companies .
Helsinki Accounting Firms At A Glance
Company Based In Best For Key Fact KPMG Helsinki Audit and tax for large groups Part of the global KPMG network PwC Helsinki Tax and transactions Part of the global PwC network EY Helsinki Audit and international tax Part of the global EY network Deloitte Helsinki Audit and consulting Part of the global Deloitte network BDO Helsinki Mid-sized companies Part of the global BDO network Grant Thornton Helsinki Growing and owner-led companies Part of Grant Thornton International Accountor Espoo Outsourced bookkeeping and payroll One of the largest Nordic accounting groups Talenom Oulu SME bookkeeping with software Listed on Nasdaq Helsinki Azets Helsinki Payroll and financial administration Part of the international Azets group Baker Tilly Helsinki SME audit and tax Part of Baker Tilly International
Best Accounting Firms In Helsinki For 2027
1. KPMG — Big Four Audit And Tax
KPMG Finland provides audit, tax and advisory for large and listed companies.
Choose it for statutory audit at scale.
2. PwC — Big Four Audit, Tax And Deals
PwC Finland delivers audit, tax and deal advisory for Finnish and international groups.
It suits companies planning acquisitions.
3. EY — Big Four Audit And Advisory
EY Finland offers audit, tax and consulting for large organisations.
Choose it for cross-border tax structures.
4. Deloitte — Big Four Audit, Tax And Consulting
Deloitte Finland provides audit, tax, risk and consulting services.
It suits companies needing advisory alongside audit.
5. BDO — Mid-Tier Audit And Outsourcing
BDO Finland offers audit, tax, accounting and payroll for mid-sized companies.
Choose it for a mid-tier alternative to the Big Four.
6. Grant Thornton — Audit And Advisory For Growth Companies
Grant Thornton Finland provides audit, tax and advisory to growth companies.
It suits owner-managed businesses.
7. Accountor — Nordic Accounting And Payroll Group
Accountor is one of the largest accounting and payroll providers in the Nordics.
Choose it for full outsourcing.
8. Talenom — Listed Digital Accounting Firm
Talenom combines accounting services with its own software for small and medium businesses.
It suits SMEs wanting digital bookkeeping.
9. Azets — Accounting, Payroll And Advisory
Azets provides accounting, payroll and advisory services across the Nordics and UK.
Choose it for multi-country payroll.
10. Baker Tilly — Audit And Accounting For SMEs
Baker Tilly Finland offers audit, accounting and tax for SMEs and international subsidiaries.
It suits foreign companies with Finnish subsidiaries.
How To Choose An Accounting Firm In Helsinki
Do You Need An Audit?
Larger companies need a statutory audit, smaller ones may not.
Is Payroll Included?
Finnish payroll involves several statutory contributions.
Can They Work In English?
Most firms serve international clients in English.
Do They Use Your Software?
Ask about integrations with your systems.
Frequently Asked Questions
What is the corporate tax rate in Finland?
It is 20% for 2026 and falls to 18% from tax year 2027.
What is the VAT rate in Finland?
The standard VAT rate is 25.5%.
Do small companies need an audit in Finland?
Very small companies may be exempt. Check the thresholds with an accountant.
Conclusion
Helsinki offers everything from Big Four audit to digital bookkeeping. For legal support, see the top business law firms in Finland , and explore the Finland hub .
