French Citizenship by Marriage
You married a French citizen. You share a home, a tax return, probably children. You assumed citizenship would follow naturally. Then you read the requirements for 2026 and realized that marrying French does not make becoming French simple — it makes it slightly less discretionary, but not less demanding.
The marriage pathway (declaration de nationalite francaise) is legally a right, not a discretionary favor. If you meet the conditions, the state must accept your declaration unless it is refused for a statutory reason or the acquisition is opposed on grounds such as indignity or non-linguistic lack of assimilation. Fraud or public-order issues can lead to refusal or other statutory action. But "meeting the conditions" now includes passing a B2 language certification — up from B1 — and clearing the new mandatory civic exam. Of the 15,910 people who acquired French nationality through marriage in 2024, those filing in 2026 face a measurably harder road than their predecessors did even 12 months ago.
The Four-Year Rule (and When It Becomes Five)
You can file your declaration after four years of marriage if, since the marriage, you have either resided continuously and regularly in France for at least three years or, while living abroad, your French spouse was registered on the consular register throughout that period. Otherwise, the period is five years.
The timeline extends to five years if you cannot satisfy either of those four-year alternatives: at least three years of continuous, regular residence in France since the marriage, or consular registration of the French spouse throughout the relevant period abroad.
So if you married in 2022 and lived in London until 2024 before moving to France, the four-year route is available if your French spouse was registered on the consular register during the period abroad; otherwise, because you cannot show three years of continuous, regular residence in France since the marriage, the five-year rule applies.
Your French spouse must have held French nationality on the day of your marriage and must have retained it continuously since. If your spouse naturalized after the wedding, this condition is not met for the marriage declaration.
If you married abroad, the marriage must be transcribed into French civil registers before you can file. Apply through the relevant French consulate or, where applicable, the SCEC in Nantes; timing varies by country and office.
Proving Community of Life
The prefecture does not take your word that your marriage is real. You must demonstrate both affective and material community of life through documentation:
- Joint tax declarations (avis d'imposition commune) — ideally covering the full qualifying period
- Shared accommodation: rental lease in both names, property deed, or utility bills
- Shared finances: joint bank account statements (not required, but strengthens the file)
- Children of the union: birth certificates listing both parents
- Certificate of honor: a signed declaration from both spouses attesting to continuous shared life
In some cases, the prefecture will order a police investigation (enquete de police). Officers may visit your home, interview neighbors, or request separate questioning of each spouse. This is not necessarily a reflection of suspicion about your specific marriage.
If you have separated at any point during the marriage, or if you filed taxes separately for a year, these facts may raise questions about a "rupture de communaute de vie". The burden is on you to explain the gap — perhaps work relocation, illness, or family obligations — and prove the community resumed.
The B2 Language Requirement (New for 2026)
Until December 31, 2025, spouses could file with B1 French. That exemption is gone. Since January 1, 2026, the marriage pathway requires the same B2 level as naturalization by decree.
This means you need to prove you can:
- Understand complex texts on abstract topics
- Communicate spontaneously enough to converse with native speakers without strain
- Write clear, detailed arguments on a range of subjects
Accepted certifications: DELF B2 (lifetime validity), TCF-IRN at B2 level (valid two years), TEF IRN at B2 level (valid two years), or a French diploma at Baccalaureat level or higher.
The practical impact is significant. Many spouses — particularly those who work in English-language environments in Paris, or who speak French fluently at home but never took a formal test — must now invest three to six months in exam preparation. The DELF B2 is the most cost-effective option long-term since it never expires, but it is also the hardest: a comprehensive four-skill exam with a 50% pass threshold on each section.
Free Download
Get the France Citizenship Guide — Quick-Start Checklist
Everything in this article as a printable checklist — plus action plans and reference guides you can start using today.
The NAT Civic Exam
Like the decree pathway, the marriage route now requires a passing score (32/40) on the Examen Civique — 40 multiple-choice questions in 45 minutes covering Republican values, French institutions, history, geography, and daily society.
The attestation has no expiry date, so take it as soon as you feel ready — even years before filing. The fee is roughly 70 euros per attempt.
What the Prefecture Cannot Do (and What They Can)
Because the marriage declaration is a right, the prefecture has limited grounds for refusal or opposition:
They can refuse registration if:
- There is evidence the marriage is fraudulent (mariage blanc)
- You present a threat to public order (serious criminal record)
- Community of life has ceased
- You fail to meet the language or civic exam requirement
- Your marriage was not transcribed (if performed abroad)
They cannot oppose simply because:
- You earn below average
- You have not volunteered in local associations
However, the Government may oppose for indignity or a non-linguistic lack of assimilation under Article 21-4 of the Code civil. The assimilation interview still takes place. If the agent suspects the marriage is one of convenience based on your answers, or if there are inconsistencies between your statements and your spouse's statements, the prefecture can launch a deeper investigation and delay the process by 6-12 months.
Timeline and Costs
The marriage declaration process typically takes 12 to 18 months from filing to registration, shorter than the decree pathway because there is no ministerial review in Nantes for straightforward cases. The administration has one year to refuse registration; a government opposition procedure can apply within the two-year period provided by law.
Costs are identical to the decree pathway: 255 euros for the fiscal stamp, 150-250 euros for language certification, approximately 70 euros for the civic exam, and 200-500 euros for sworn translations depending on your country of origin and family size.
If registration is refused, you have six months to challenge the decision before the Tribunal Judiciaire. If the Government opposes the acquisition for indignity or non-linguistic lack of assimilation, you have two months to challenge that decision before the Conseil d'État.
Preparing a Bulletproof Declaration
The most common reasons declarations are opposed or delayed:
- Insufficient proof of community of life — especially if you filed taxes separately for any year
- Marriage not transcribed — a surprisingly common oversight for couples married abroad
- Language certificate expired — TCF/TEF certificates are only valid for two years; time your exam carefully
- Inconsistencies during police interview — rehearse timelines and key dates with your spouse
Our France Citizenship Guide includes a dedicated marriage-pathway chapter with a community-of-life evidence tracker, police interview preparation guide, and a timeline calculator that accounts for the transcription delay if you married outside France.
Get Your Free France Citizenship Guide — Quick-Start Checklist
Download the France Citizenship Guide — Quick-Start Checklist — a printable guide with checklists, scripts, and action plans you can start using today.