Finland taxes residents on worldwide income and non-residents on Finland-source income only. Finland operates a largely pre-filled administrative assessment system: the Finnish Tax Administration pre-populates most individual returns using third-party-reported data and issues a tax decision (verpaatos) determining the final liability, which the taxpayer reviews and can amend.
The Finnish tax year is the calendar year. The individual filing deadline varies by taxpayer (typically early-to-mid May of the following year, confirmed individually via the pre-filled return notice each taxpayer receives).
Finland's headline corporate income tax (CIT) rate is 20%.
The headline personal income tax (PIT) rate is residents up to ~52%; non-residents 35%.
The standard VAT/GST (or equivalent consumption tax) rate is 25.5%.
An individual is a Finnish tax resident if their permanent home is in Finland, or if they stay in Finland continuously for more than six months (a non-resident is defined as someone abroad staying in Finland six months or less). Residents are taxed on worldwide income; non-residents on Finland-source income only, generally at a 35% source tax on earned income (though those resident in another EU/EEA state or a treaty country may request progressive taxation instead).
A non-Finnish entity has a Finnish permanent establishment through a fixed place of business or a dependent agent habitually concluding contracts in Finland on the entity's behalf, following the OECD Model Treaty definition as applied under Finnish domestic law and any applicable tax treaty.
Finland's CFC regime (amended 2019, stricter than the EU ATAD minimum) applies where a Finnish resident holds, alone or with related parties, at least 25% of the capital or profit entitlement of a foreign entity, and that entity's effective tax rate is below three-fifths of the comparable Finnish rate (roughly 12%, given Finland's 20% corporate rate). The CFC's net income is then taxable to the Finnish shareholder as it accrues, with actual distributions later exempted to avoid double taxation; withholding tax on CFC dividends is creditable against the CFC income. Two escape rules exempt genuinely substantive entities: one for entities within the EEA carrying out genuine economic activity there, and a narrower one for non-EEA entities in a cooperative, information-exchanging jurisdiction whose income derives primarily from industrial production, shipping, or intra-group trade within that jurisdiction.
Finland has no formal thin capitalization rule; an EU ATAD-based interest limitation rule applies instead. Net financing expenses are fully deductible up to EUR 500,000; above that, deductibility is capped at 25% of adjusted taxable income (EBITDA), though net interest paid to non-group-related parties remains deductible up to EUR 3,000,000 regardless. A balance-sheet exemption allows full interest deductibility where the company's equity-to-assets ratio meets or exceeds a specified test.
Finland does not use an elective check-the-box classification system; entity classification generally follows the entity's actual legal characteristics. Finland has implemented ATAD2-aligned anti-hybrid rules denying deductions for payments producing a hybrid mismatch outcome.
No foreign bank account or foreign financial asset reporting regime exists requiring residents to separately disclose foreign accounts; foreign income is reported through the standard annual tax return.
Finland provides a participation exemption for qualifying dividends and capital gains between resident companies and for qualifying EU/EEA and treaty-country subsidiary holdings, generally requiring at least a 10% ownership interest, exempting dividends and capital gains from Finnish corporate tax subject to anti-abuse and subject-to-tax conditions.
Finland has a real foreign tax credit regime available to both individuals and companies for foreign tax paid on foreign-source income also taxed in Finland, capped at the Finnish tax otherwise due on that income, with a 5-year carryforward for excess credits.
Finland has entered into income tax treaties with 75 countries plus the autonomous Faroe Islands, per Finland's Ministry of Finance and independently confirmed by the Tax Justice Network.