The acquisition of French nationality is governed by the Code Civil (Articles 17 to 33-2) and administered through the ANEF platform. Following structural modifications enacted under the 2024 Immigration Law and executive implementation decrees active as of January 1, 2026, France enforces higher integration benchmarks, including an elevated language requirement and a mandatory computerized civic evaluation.
- The 2026 reforms raised the naturalization language requirement from B1 to B2 and added a mandatory civic exam. - Naturalization, marriage-based declaration, and descent are legally distinct pathways with different timelines and proofs. - Naturalization by decree is discretionary — meeting minimum eligibility does not guarantee approval.
Applicants must prove a minimum of 5 years of continuous, lawful residence in France at the time of submission, with their primary residence and economic interests established within French territory; extended absences exceeding 6 consecutive months during the 5-year window reset the application clock. The residency window is reduced to 2 years for individuals who completed a higher education diploma from an accredited French university or grande école requiring at least two years of study, or who rendered exceptional services to the Republic, and is waived entirely for recognized refugees, stateless persons, or those who completed active French military service. For applications filed on or after January 1, 2026, two strict thresholds apply: an elevated language level of CEFR B2 (up from B1) in oral and written competencies via an unexpired certificate (TCF, TEF, or DELF B2; French diplomas such as the Brevet or Baccalauréat satisfy this natively); and the NAT Civic Examination, a proctored digital 40-question multiple-choice test on French history, culture, geography and republican values (including Laïcité), requiring a minimum score of 32/40 (80%). Applicants must also demonstrate financial autonomy — reliance on non-contributory social assistance (RSA) can lead to an administrative adjournment (ajournement).
Foreign nationals married to French citizens may claim nationality via declaration under Article 21-2 of the Code Civil — a legal right once statutory metrics are satisfied. The couple must be legally married for a minimum of 4 continuous years if they maintained uninterrupted cohabitation in France with the French spouse registered on the electoral rolls, rising to 5 years if the couple resided abroad and the French spouse failed to maintain registration on the Register of French Citizens Established Outside of France. Applicants must demonstrate ongoing community of life (communauté de vie) through joint tax assessments, joint mortgage deeds or lease agreements, co-signed utility bills and joint bank statements, and birth certificates of children if applicable. The marital declaration track requires CEFR level B1 French, and a marriage celebrated outside France must undergo formal transcription at the competent French consulate before the citizenship declaration can proceed.
Under Article 18 of the Code Civil, a child is French from birth if at least one parent is a French citizen at the time of birth, regardless of birthplace or parental marital status; if parentage is established after birth, citizenship applies retroactively provided the parent was French on the date of birth. Children born in France to non-French parents do not acquire citizenship automatically at birth (except under specialized dual-generation rules), but instead access it via age milestones: automatic acquisition at age 18 if resident in France on that date with habitual residence for at least 5 years since age 11; or anticipated declaration between ages 13-17 (parents may request from age 13, or the teenager may apply independently from age 16), subject to localized residency verification.
The application follows: (1) dossier compilation and exam validation — passing the NAT Civic Exam and securing a B2 language certificate; (2) ANEF digital upload of the full application, civil documents, tax history and proof of payment; (3) a mandatory fiscal fee (Timbre fiscal) of €255.00 purchased digitally; (4) the Assimilation Interview at the regional Prefecture, evaluating loyalty to the Republic, adherence to republican values and conversational capacity; (5) a decisional phase, with the Prefecture holding a statutory deadline of 18 months from a complete filing receipt (reduced to 12 months for applicants resident in France more than 10 years). Outcomes include Approval (forwarded to the Ministry of the Interior's SDANF and published in the Journal Officiel via a Naturalization Decree), Adjournment (paused 1-2 years for temporary factors such as unstable employment or incomplete tax compliance), or Refusal (for serious non-compliance such as an active criminal record). France fully recognizes dual and multiple nationality — naturalizing citizens are not required by French law to renounce their original citizenship.