Naturalisation by decree asks for 5 years of habitual, stable residence, and residence is the first of 5 requirements. Below is each one, dated and sourced, with the shorter routes, what French law does and does not say about time abroad and what happens after you file.
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For applications filed from 1 January 2026, a naturalisation file carries proof of French at B2, oral and written, and an attestation de réussite à l’examen civique. They are exempted separately. Fiche F39426 excuses nobody from the exam but a person whose health makes the assessment impossible, on a medical certificate. Fiche F11926 adds one ground for the B2 alone: refugees and stateless people over 70 with 15 years of lawful residence.
The declaration by marriage asks for the B2 and not the exam. Age, nationality and schooling in France exempt nobody from the exam, though a French diploma usually is the B2 proof.
Both lists are set out in full on the exemptions page in the examen civique guides.French law sets no fixed day count. Residence is judged on where your home, work, family and tax life are, and prefectures take issue with stays abroad around three months or longer. Verify with a lawyer or your prefecture before a long stay abroad.
The app flags risk rather than producing a verdict, because a verdict would mean inventing a threshold French law has not set. Where the judgement belongs to the prefecture, the app says so instead.
The administration must answer within 18 months of the receipt for a complete file, 12 months if you have lived habitually in France for at least ten years, extendable once by three months with reasons. If the deadline passes without an answer, the application counts as refused by silence, which opens an appeal to the Ministry within two months, then the administrative court in Nantes, rather than ending the process.
In practice many files take 18 to 30 months, and the prefecture can call you to an interview and ask for updated documents during the wait. Meeting every requirement does not set the decision date, the prefecture's own queue does. Follow the file on ANEF, where each step is stamped.
The decree is published in the Journal officiel and you are told by email. Nationality takes effect on the day the decree is signed, and the prefecture invites you to a citizenship ceremony within six months, where your extract of the decree is handed to you.
The deadline is article 21-25-1 of the Code civil. It runs from the récépissé for a complete file, not from the day you press submit.
Belong France takes your residence date and every trip you have taken and gives you the distance that is actually yours: what you control, what you do not and what each absence puts at risk.
No invented finish dates. Naturalisation is granted by decree, and where the decision belongs to the prefecture and the ministry rather than to you, the app says so instead of producing a date.
7 days free, then 34,99 € a year.
Five as the general rule, under article 21-17 of the Code civil. Two after two years of successful higher education in France with a French diploma, under article 21-18. No minimum at all for recognised refugees, under article 21-19, or for nationals of French-speaking countries who are native French speakers or were schooled five years in French, under article 21-20. The spouse of a French citizen takes a different road: a declaration after four years of marriage.
French law sets no figure. Residence must be habitual and stable, with France as the centre of your material interests and family ties, and the prefecture judges that as a whole. Belong France flags a single stay abroad of around three months or more, because practitioners report prefectures questioning stays that long, and it says plainly that this line is its own and not the law's.
No. France asks no renunciation. Whether you keep your original nationality depends only on your own country's law, so check that side before you apply.
Article 21-25-1 of the Code civil gives the administration 18 months from the receipt of a complete file, 12 if you have lived habitually in France for at least ten years, extendable once by three months with reasons. If the deadline passes without an answer, the application counts as refused by silence. That opens an appeal to the ministry within two months and then to the administrative court in Nantes. In practice many files take 18 to 30 months.
A timbre fiscal of 255 euro, 127.50 euro in Guyane, according to service-public.gouv.fr. The fee rose from 55 euro on 1 May 2026. The examen civique and the language test are paid for separately, to the centres that run them.
No. For applications filed from 1 January 2026, a naturalisation file carries two separate documents: proof of French at B2, oral and written, and the attestation de réussite à l'examen civique. The declaration by marriage asks for the first and not the second.
The naturalisation exam on French history, the Republic's principles, citizenship and France's place in the world, sat at approved centres. The official preparation site and its question bank are free.
The examen civique is sat on demand at an approved centre, CCI Paris Île-de-France or France Éducation International, through the year and as many times as needed. The attestation does not expire. There is no national calendar.
Practice test and sample questions
Open the official preparation site
Rules as of 1 October 2026, snapshot 2026.1, from the Ministère de l'Intérieur. Read the official source. Belong France is not a government service, is not affiliated with the Ministère de l’Intérieur and gives no legal advice.