Citizenship Guides
Complete guide to French citizenship through naturalisation: 5-year residence, B2 French, the examen civique, interview process, costs and timeline in 2026.
French citizenship by naturalisation is granted through a decree issued by the Ministry of Justice. It is not a right, it is a discretionary decision by the French state. This distinction matters: even if you meet all the stated requirements, the administration retains the power to refuse or delay. Understanding what the state actually evaluates, beyond the checklist, is the key to a strong application.
The standard requirement is 5 years of regular and uninterrupted residence in France immediately before filing your application. "Regular" means your status was lawful throughout, periods spent without a valid residence permit do not count and can break continuity.
Several categories allow a reduced residence period of 2 years:
There is no residence requirement at all for spouses of French citizens, provided the marriage has lasted at least 4 years and the couple has been living together. However, the French citizenship of the spouse must be continuous throughout the 4-year period, and the non-French spouse must demonstrate sufficient assimilation.
For naturalisation applications filed from 1 January 2026, you must prove French at level B2, both spoken and written (Cadre européen commun de référence, CECR); applications filed before that date were assessed at B1. Your French is no longer judged through the naturalisation interview: you prove it with a document in your file. A B2 level means you can follow the main ideas of complex texts, discuss a wide range of topics fluently, and explain a viewpoint with arguments for and against.
Accepted proof is the diplôme national du brevet, a diploma issued in the name of the French state at level 3 or above, a professional certification at level 3 or above registered in the RNCP, any diploma attesting B2 in French, or a TCF or TEF result less than 2 years old. For most applicants without a French diploma, the TCF or TEF is the practical route.
There is no general exemption for older applicants. You are exempt from the language proof if a disability or chronic health condition makes the assessment impossible (with a medical certificate), or if you are a refugee or stateless person aged over 70 who has lived in France for at least 15 years.
Since 1 January 2026, naturalisation applicants must also pass the examen civique, a written civic knowledge exam that is separate from the interview. Many applicants still call it the "OFII test civique", but it is not run by OFII: you register with a centre approved by the Paris Chamber of Commerce and Industry (CCIP) or France Éducation International.
Format. 40 multiple-choice questions, written in French, mixing knowledge questions and practical scenarios (mises en situation). You have a maximum of 45 minutes.
Pass mark. You need 32 correct answers out of 40 (80 percent). Applicants whose health makes the exam impossible can be exempted with a medical certificate, and adjustments such as extra time are possible on medical grounds.
The exam covers: the principles of the French Republic (la devise, la laïcité, la séparation des pouvoirs), the institutions of the Fifth Republic (President, Prime Minister, National Assembly, Senate, Constitutional Council), French history milestones (the Revolution, the Declaration of the Rights of Man, the two World Wars, De Gaulle and the Fifth Republic), and the rights and duties of French citizens.
Beyond language and civic knowledge, the prefecture evaluates your assimilation into French society. This is assessed holistically during the interview and through your dossier. Elements that contribute to assimilation include:
This is not a tick-box assessment. The prefecture interviewer may ask about French current affairs, history, or your personal integration into French society. Candidates who have built a genuine connection to France, through work, community, education, or family, are viewed more favorably than those whose presence in France is purely transactional.
Applications are submitted at the prefecture or sous-préfecture of your residence. The file (dossier de naturalisation) includes:
Prefecture requirements vary by department. Always contact your local prefecture to confirm the exact list required in your area, there is local variation in what is demanded.
After filing, you are invited to a naturalisation interview at the prefecture. The interview is conducted in French and typically lasts 20 to 40 minutes. Your language level is already established by the proof in your file, so the interviewer focuses on your knowledge of French society and values and your overall integration. They may ask why you want to become French, what you know about French history, and your professional and family situation.
After the interview, the prefecture sends the file to the Ministry of Justice (Direction des affaires civiles et du Sceau). The Ministry issues a decree granting or refusing naturalisation. If granted, you receive a decision notice and must then attend a ceremony of welcome to citizenship (cérémonie d'accueil dans la citoyenneté française) organized by the prefecture. Attendance is compulsory to finalize citizenship. At the ceremony, you receive your naturalization decree and can apply for a French passport.
From filing a complete dossier to receiving the naturalization decree takes a minimum of 12 months in most prefectures, and 18 to 24 months is common. Prefectures with high volumes (Paris, Île-de-France, Marseille) typically have the longest queues. There is no administrative right to a decision within a defined period, and delays beyond 18 months are not unusual.
The state has the right to withdraw a naturalisation if it was obtained by fraud (within 2 years of the decree) or if the person is convicted of crimes against the fundamental interests of the nation or an act of terrorism (within 10 years).
There is a processing fee ("droit de timbre") of approximately 55 euros per application. This is modest compared to most other European countries. However, the cost of obtaining apostilled documents, certified translations, and language certifications can add significantly to the total cost of the process.
France permits dual citizenship and does not require you to renounce your previous nationality. However, your country of origin may require renunciation upon obtaining French citizenship. Countries that require renunciation include India, China, Japan, and several others. Verify your country of origin's rules before proceeding.
Pour vous entraîner, consultez 30 vraies questions de naturalisation avec réponses et explications, ou commencez les séries complètes sur CivicPass France.