ECN-cohort obligations + Article 22(b) age-30 declaration
Citizenship in Finland
- Eligibility
- Cascade-FIRST: ECN_22B_AGE_30_DECLARATION_COHORT_SE_FI + ECN_RATIFIER_LONGEST_SIGNATURE_TO_RATIFICATION_GAP_FI (11 years). ONE reservation Article 29(1) on Article 21(3)(g) extraordinary military service.
- Timeline
- supranational
- Renunciation
- Not required
Overview
Bucket: CB | Acquisition type: supranational_treaty | **Signature **: YES ★
Operative framework: Kansalaisuuslaki (Nationality Act) 359/2003 (as amended through 974/2007 + 579/2011 + 261/2014 + 432/2019 + 218/2024 + 929/2025). Administered by Maahanmuuttovirasto (Migri) — Finnish Immigration Service. Applicants engage one of two constitutionally-equal national languages: Finnish OR Swedish (constitutional bilingualism per Constitution Act 731/1999 § 17). Appellate path runs to Korkein hallinto-oikeus (KHO) — Supreme Administrative Court. Residence floor (general naturalization): 5 years continuous residence (3 years with marriage to Finnish citizen).
Overview: Finland's citizenship framework runs on Kansalaisuuslaki 359/2003 with 5-amendment cascade (974/2007 + 579/2011 + 261/2014 + 432/2019 + 218/2024) culminating in Phase 2 Reform Act 929/2025. Triple-overlay architecture: (1) Finland-citizenship via 359/2003; (2) Åland hembygdsrätt sui-generis regional-citizenship via Self-Government Act 1144/1991 (distinct from Finland-citizenship); (3) Sami self-administration overlay via Sami Parliament Act 414/2025. Decision-issuing authority: Migri (Maahanmuuttovirasto). Apex: Korkein hallinto-oikeus. ECN ratified with Art 21(3)(g) reservation. Nordic Passport Union founding party (1954).
Legal basis
- (11 years). ONE reservation Article 29(1) on Article 21(3)(g) extraordinary military service.
Primary authority: Kansalaisuuslaki 359/2003 (Nationality Act, current consolidated text on Finlex.fi); Kansalaisuusasetus 579/2003 (Nationality Decree); amendment chain 974/2007 + 579/2011 + 261/2014 + 432/2019 + 218/2024; Phase 2 Reform Act 929/2025; Self-Government Act for Åland 1144/1991 (hembygdsrätt sui-generis); Sami Parliament Act 414/2025. Apex jurisprudence: Korkein hallinto-oikeus (KHO) — Migri-decision review chain. EU-law overlay via Art 20 + 21 TFEU; ECN ratified with Art 21(3)(g) reservation. ECtHR post-domestic-remedies.
Authority-chain extension: Migri (Maahanmuuttovirasto / Finnish Immigration Service) is the decision-issuing authority for naturalization + declaration routes. Decision review chain: Migri → Hallinto-oikeus (Administrative Court) → Korkein hallinto-oikeus (KHO, Supreme Administrative Court) as apex. EU-law overlay: Art 20 + 21 TFEU EU-citizenship + free-movement framework; CJEU referral via Art 267 TFEU available from KHO. ECtHR jurisdiction post-domestic remedies. Treaty layer: ECN ratified with Art 21(3)(g) reservation (Sami minority + Karelian-displaced-population legacy considerations); 1954 + 1961 Statelessness Conventions ratified; Nordic Passport Union founding party (1954); Helsinki Treaty 1962 founding party; Common Nordic Labour Market 1982 founding party. [DEEP-ENRICH-v2]
Example scenarios
Andreas Salomonsson · age 29 · ECN-cohort obligations + Article 22(b) age-30 declaration
REQUIRES FURTHER REVIEW — Article 22(b) European Convention on Nationality age-30 declaration to retain FI citizenship after long absence.
Finland ratified European Convention on Nationality 2008. ECN Article 22(b) cohort rules apply to dual citizens with insufficient connection to Finland — risk of automatic loss at age 30 unless declaration filed. Citizenship Act 359/2003 §34 implements: dual citizen born abroad or absent from Finland must file declaration by age 22 to retain Finnish citizenship. Applicant must file declaration before age 30 to avoid §34 automatic loss.
Informational summary compiled from primary legal sources — not legal advice. Citizenship law changes; verify with the competent authority before acting. Last verified 2026-05-18.
Track changes to this route
Descent and naturalization rules change. We'll email you in plain English when anything affecting Finland updates — no spam.