# Finnish citizenship by naturalisation Finland's current adult application route has an eight-year default residence period, reduced to five years for applicants meeting the language requirement. Lawful residence, absence limits, livelihood and integrity conditions apply; a future civic-knowledge rule is separate from the requirements applying in September 2026. Scope: Ordinary adult citizenship application under the rules for applications submitted on or after 17 December 2025; Nordic, spouse, declaration and other exceptional cohorts are not the selected baseline. Jurisdiction: Finland. Sources reviewed 2026-09-17; review due 2026-12-16. General information, not legal advice or a finding of eligibility. Requirements depend on the route, applicant and filing date. Verify the official instructions before applying. ## Adult application and personal conditions Adult applicants must be at least 18, have a reliably established identity, live in Finland and be in Finland when applying. Integrity and payment obligations also apply, including taxes, fines and child maintenance; certain minor fines do not prevent citizenship. Apply only after meeting the applicable requirements. Evidence: documented. [Finnish Immigration Service: Citizenship application for adults](https://migri.fi/en/citizenship-for-adults). Source location: Citizenship application for adults: opening eligibility and Get ready for applying, requirements 1, 4 and 5. ## Eight-year default and five-year language branch For applications from 1 October 2024, the default is the past eight years in Finland. Meeting the citizenship language requirement reduces this to the past five years. Residence throughout must be lawful. Earlier applications follow the earlier rules; Nordic and other specified cohorts have separate reductions. Evidence: conditional. [Finnish Immigration Service: Period of residence: applications from 1 October 2024](https://migri.fi/en/period-of-residence); [Finnish Immigration Service: Citizenship application for adults](https://migri.fi/en/citizenship-for-adults). Source location: Period of residence: opening requirements and You meet the language skills requirement; adult application requirement 3. Effective from 2024-10-01. ## Permit status and residence credits With a first A permit, counting starts on arrival if already granted, otherwise on the permit grant. For applicants previously on a B permit, half that earlier residence counts; an A or P permit is required at application and at least one year under A or P before decision. Permit gaps do not count. Evidence: conditional. [Finnish Immigration Service: Period of residence: applications from 1 October 2024](https://migri.fi/en/period-of-residence). Source location: How to calculate the period of residence; first continuous A permit; temporary B permit. ## Residence abroad and the final year Counted residence can include 365 days abroad in total, at most 90 during the year immediately before application. Excess days do not count. Departure and return days count as Finnish residence. Five continuous years abroad interrupt the clock and restart counting. Evidence: conditional. [Finnish Immigration Service: Period of residence: applications from 1 October 2024](https://migri.fi/en/period-of-residence). Source location: How does residence outside Finland affect the period of residence?. Effective from 2024-10-01. ## Finnish or Swedish language evidence Satisfactory spoken and written Finnish or Swedish is required. Specified sign-language alternatives apply with speech disability or hearing impairment. Accepted proof includes YKI, a satisfactory civil-service oral and written certificate, and qualifying Finnish education. Limited language exceptions can be requested but are rarely granted; obtain the certificate before applying unless seeking an exception. Evidence: conditional. [Finnish Immigration Service: Language skills for Finnish citizenship](https://migri.fi/en/language-skills); [Finnish Immigration Service: Exceptions to the language skills requirement](https://migri.fi/en/exceptions-to-the-language-skills-requirement). Source location: Language skills: opening standard and accepted certificates/education; Exceptions to the language skills requirement: introductory conditions. ## YKI level and accepted skill combinations For the current YKI test, grade 3 or higher must be obtained in an accepted pair: speaking and writing, listening comprehension and writing, or reading comprehension and speaking. Migri expressly equates intermediate grade 3 with CEFR B1. Two certificates may form the pair; tests taken before 2012 have separate rules. Evidence: conditional. [Finnish Immigration Service: Proving language skills with the National Certificate of Language Proficiency (YKI)](https://migri.fi/en/national-certificate-of-language-proficiency-yki-). Source location: Proving language skills in the YKI test; accepted combinations A–C; YKI tests completed before 1 January 2012. ## Livelihood requirement from December 2025 Applications from 17 December 2025 require lawful resources sufficient to live on and no more than three months in total of unemployment benefit or social assistance over the preceding two years, assessed at decision. Relevant household social assistance can include a spouse's benefit. Applicants aged 65 or above are exempt; serious-ground derogations may be possible. Earlier applications retain the earlier rules. Evidence: conditional. [Finnish Immigration Service: Means of support: requirements from 17 December 2025](https://migri.fi/en/-/means-of-support-duplicate-1); [Finnish Immigration Service: Frequently asked questions: Finnish citizenship and legislative reforms](https://migri.fi/en/faq-finnish-citizenship). Source location: Means of support: applications on/after 17 December 2025, spouse and age-65 sections; FAQ: reform transition and Income and livelihood questions 14 and 17. Effective from 2025-12-17. ## Future civic-knowledge rule, not a current test Migri states that the civic-knowledge amendment enters into force on 1 January 2027, but applies only to citizenship applications submitted from 1 March 2027 after transition. For ages 18–64, it can be met through the citizenship test or specified Finnish- or Swedish-language matriculation or higher-education credentials in Finland, subject to limited derogations. It is not a requirement for September 2026 applications. Evidence: conditional. [Finnish Immigration Service: Frequently asked questions: Finnish citizenship and legislative reforms](https://migri.fi/en/faq-finnish-citizenship). Source location: Amendments at phase 3 of the reform of the Citizenship Act: questions 1–4; statutory commencement versus 1 March 2027 application-cohort transition. Effective from 2027-01-01. ## Multiple citizenship accepted Finland accepts multiple citizenship and does not impose a general renunciation requirement when granting Finnish citizenship. This does not determine whether another country permits its nationality to be retained; Finland treats a multiple national with Finnish citizenship as Finnish. Evidence: documented. [Finnish Immigration Service: Finnish citizenship: multiple citizenship](https://migri.fi/en/finnish-citizenship). Source location: Finnish citizenship: Multiple citizenship. ## Scope and limitations - Residence is a qualified calculation, not five years of unrestricted physical absence or a guarantee of approval. EU/free-movement, protection, spouse, Nordic and declaration cases require their own clock and conditions. - The YKI framework and permitted skill combinations are stated expressly; language rules for permanent residence permits are not substituted for citizenship rules. - The future civic-knowledge amendment is labelled future and cohort-specific. Implementation materials and test arrangements need rechecking before the 2027 application transition. - No fee, overall acquisition price or processing-time guarantee is supplied. ## Explore this passport - [Passport rank and travel access](https://multipassrank.com/passport/finland) - [Tax residence & income](https://multipassrank.com/passport/finland/taxes) - [Country-profile JSON, including sources and scoped requirements](https://multipassrank.com/api/v1/country-profiles/FI) - [Multiple-citizenship policy guide](https://multipassrank.com/dual-citizenship-countries) [Canonical page](https://multipassrank.com/passport/finland/citizenship)