Finland tax calendar 2026: return and payment dates
In Finland the tax year runs from 1 January to 31 December. As of 26 October 2026 the current tax year ends on 31 December 2026; the next tax return is expected by 14 April 2027 (tax year 2026; provisional, not yet confirmed by the tax authority), and the tax payment is due after the tax assessment, not on a fixed day.
For a private investor who is tax resident in Finland and holds listed shares and ETFs at a foreign broker. Dates only — Allocaria calculates no tax and files nothing.
Key dates (as of 26 October 2026)
- 31 December 2026The tax year ends — for tax year 2026 (in 66 days).
- 14 April 2027Tax return expected — for tax year 2026 (in 170 days). Provisional: the tax authority has not confirmed this date yet.
- No fixed dayTax payment due — for tax year 2026: due after the tax assessment (see the details below).
Return deadline, in full
Corrections/additions must reach the Tax Administration by the due date printed on the pre-completed return: 14, 21 or 28 April (spring 2026, for tax year 2025; 1 April for business owners/farmers). Persons who receive no pre-completed return but have income to report: 28 April 2026. Dates for tax year 2026 (spring 2027) not yet published — check your return.Payment deadline, in full
Back tax (jäännösvero) is due in two instalments (if over EUR 170) on dates set by the month the assessment ends (e.g. assessment ending in July -> 1 Sep and 2 Nov; September -> 2 Nov and 4 Jan). Late-payment interest with relief runs from 1 February of the following year (4.5% in 2026). Requesting an additional prepayment (lisäennakko) with a January due date avoids back tax interest.
Where to file and pay
Returns and payments go through the tax authority. Its own website: Finnish Tax Administration (Vero) — official website.
Allocaria links to the authority's site and files or pays nothing for you.
Common questions
The tax year in Finland runs from 1 January to 31 December. The current one ends on 31 December 2026.
The expected tax return date for Finland is 14 April 2027 (tax year 2026). It is provisional: the tax authority has not confirmed it yet. A date that falls on a weekend or a public holiday may move to the next working day; check it with the tax authority of Finland.
Tax payment in Finland falls due after the tax assessment, not on a fixed day; the rule is quoted in full on this page. Returns and payments go through the tax authority: Finnish Tax Administration (Vero), www.vero.fi. Allocaria files and pays nothing for you.
Who must file
Any sale of shares/ETFs via a foreign broker must be added to the return (gain or loss); even tax-exempt small sales (total proceeds up to EUR 1,000) must be reported. Foreign dividends and fund profit shares not pre-filled must also be added.
Forms the tax authority names
- Pre-completed tax return (esitäytetty veroilmoitus) — MyTax (OmaVero)
- Form 9A — Capital gains and losses from trading in securities (incl. sales via a foreign remote intermediary)
- Form 16B — Foreign capital income (dividends, fund profit shares, foreign taxes paid)
- Form 50B — Capital income and deductions
- Form 5010 — prepayment / additional prepayment request
Sources
Confidence in these sources: high (official sources). Each line is a public page; open it to check the wording yourself.
- Vero.fi — Selling shares (rates, deemed acquisition cost, EUR 1,000 rule, losses 5 years, FIFO)
Official source · read 14 October 2026
- Vero.fi — Shares in investment funds
Official source · read 14 October 2026
- Vero.fi — Foreign dividends
Official source · read 14 October 2026
- Vero.fi — Dividends from a listed company (85% taxable)
Official source · read 14 October 2026
- Vero.fi — Report the information on your investments (forms 9A, 16B, 50B; foreign remote intermediary)
Official source · read 14 October 2026
- Vero.fi — Pay tax on investments (prepayment / additional prepayment)
Official source · read 14 October 2026
- Vero.fi — Equity savings account (EUR 100,000)
Official source · read 14 October 2026
- Vero.fi — Tax return and tax assessment decision (due dates 1/14/21/28 April 2026)
Official source · read 14 October 2026
- Vero.fi — Back taxes: payment instructions (due dates 2026)
Official source · read 14 October 2026
- Verohallinto — Henkilöasiakkaan tärkeät päivämäärät
Official source · read 14 October 2026
- Verohallinto — Syventävä vero-ohje: Arvopaperien luovutusten verotus (FX conversion, pienet luovutukset)
Official source · read 14 October 2026
- PwC Worldwide Tax Summaries — Finland, Individual, Income determination (last reviewed 24 Jun 2026)
Professional-services guide · read 14 October 2026
Neighbouring countries
Tax dates of countries close to Finland: when the tax year ends and when the return and the tax are due.
General information compiled from the public sources listed below (checked 14 October 2026). Not tax advice. Rules change — check with the tax authority of Finland. A date that falls on a weekend or a public holiday may be moved to the next working day by the tax office.