Application process & timeline
The appropriate path may be proof of an existing nationality, a declaration, or a discretionary naturalisation application.
01Identify the correct legal routeBefore filing
02Prepare residence and civil evidenceBefore submission
03Complete the applicable testsBefore a complete qualifying application
04Submit and respond to the authorityDecision clock follows the relevant receipt
Track receipt, interview and evidence requests; do not treat residence duration as approval.
Citizenship routes answer different questions
French citizenship can arise through a French parent, specified childhood and birth circumstances, a declaration route such as marriage, or naturalisation by decree. A person who is already French through descent needs evidence of that status, rather than an application to buy or earn it.
Naturalisation normally requires five years of residence, with statutory exceptions. The applicant must also satisfy the substantive conditions, including a real centre of family and material interests in France. Five years of holding cards while living mainly elsewhere should not be treated as a passport entitlement.
| Starting point | Route / time condition | Important qualification |
|---|---|---|
| French parent | Descent | Legally established parentage and the parent’s French nationality at the relevant time |
| Ordinary adult naturalisation | Normally five years of residence | Integration, residence, language, character and other conditions; discretionary decision |
| Marriage to a French citizen | Usually four years of marriage; five in specified cases | Spouse French at marriage and continuously thereafter; continuing shared life and other requirements |
| Minor child of a new French citizen | Potential collective effect | Habitual shared residence and inclusion in the parent’s decree or declaration; not automatic for an adult child |
The 2026 language and civics requirements
The nationality language standard is B2 under the current rules, subject to the prescribed proof and exemptions. Applicants should check which diploma or test is accepted and its validity before paying for a course or submitting an older certificate.
The nationality civics examination applies to naturalisation and reintegration by decree. It is not required for nationality by marriage declaration. These should not be confused with the different civics examinations attached to certain residence-card applications. Passing an examination does not replace the rest of the nationality assessment.
Marriage is a declaration route, not automatic citizenship
The French spouse must have been French on the marriage date and retained that nationality. Shared material and emotional life must continue. An overseas marriage must be transcribed into the French civil-status registers. The usual four-year marriage period becomes five in the relevant absence-of-residence and consular-registration circumstances.
France recognises same-sex marriage. A recognised marriage can therefore be assessed under the spouse route; a PACS or an unmarried relationship does not simply substitute for the marriage requirement. Check foreign civil documents, prior divorces and transcription before relying on the clock.
Children and multiple nationality
A child can be French through a legally established French parent whether born in France or abroad. When a parent acquires French nationality later, the collective effect for a minor depends on shared residence and the child being named in the decree or declaration. An adult child does not acquire citizenship merely because a parent does.
France permits multiple nationalities without generally requiring surrender of the other citizenship. The other country’s law still governs loss, retention permission or notification on its side. Review that position before acquisition, particularly where the family holds citizenships that restrict voluntary naturalisation elsewhere.
The file and the real timeline
Prepare complete civil-status history, residence evidence, resources and tax history, language proof and the applicable civics evidence. Foreign documents may need authentication and approved translation. Inconsistencies in names, family circumstances or historic residence should be explained rather than left for the authority to infer.
The administration’s ordinary response period is 18 months from the relevant receipt, reduced to 12 months for the specified ten-year habitual-residence case, with one possible three-month extension. This is not a guaranteed end-to-end time from first research or appointment booking. A refusal, deferral or request for further evidence can change the practical path.
Fees and the work after approval
The nationality tax stamp increased to €255 from 1 May 2026, with the published French Guiana exception. This government charge is separate from translations, records, preparation and subsequent passport or identity-document costs.
After acquisition, retain proof of nationality and verify the civil-status record before applying for documents. Update institutions where nationality is relevant, but do not confuse a new nationality with a change in tax residence. Continue the ordinary French tax analysis while living in France.
Sources & research notes9 references
Sources supporting this guide. Research draft awaiting editorial review.
- DGFiP: French residence and worldwide income
- Service Public: naturalisation by decree, July 2026
- Service Public: French level for nationality
- Service Public: civics examination, July 2026
- Service Public: nationality stamp increases from May 2026
- Service Public: nationality by marriage
- Service Public: multiple nationalities
- Civil Code Article 143: marriage equality
- Service Public: nationality through parents and minor-child acquisition