French Naturalization 2026: Step-by-Step Guide to Citizenship

Becoming French follows five milestones: confirm your eligibility, assemble the dossier, file online through the ANEF portal, sit the assimilation interview with the new civic test, then wait for the decree and the welcome ceremony. Since 1 January 2026, the civic test is mandatory for naturalization by decree. Plan on 18 to 24 months between filing and publication in the Official Journal. This guide breaks down the entire French naturalization process in 2026, with the documents you need, the real costs, and the administrative traps that trip up most applicants.

The 4 Pathways to French Citizenship

French law defines four routes to citizenship. Picking the right one determines your document list, your processing time, and whether the state has discretionary power over your file.

1. Naturalization by decree (naturalisation par décret). This is the most common route and the focus of this guide. It is open to adults who have resided legally in France for at least five years. The decree of 12 December 2025 reformed the procedure by adding the civic test from 2026 onward.

2. Declaration by marriage (déclaration à raison du mariage). The foreign spouse of a French citizen can claim nationality after four years of marriage (five years if shared life in France has not been continuous). The process is faster: the declaration is registered by the Ministry of the Interior, and the state has no discretionary power unless it files a reasoned objection.

3. Anticipated declaration for children born in France (déclaration anticipée). A child born in France to foreign parents can claim nationality from age 13 (with parental consent), automatically at 18, or by anticipated declaration between 16 and 18. The child must have lived in France habitually for five years from age 11.

4. Attribution by descent or birth (attribution par filiation ou naissance). A child with at least one French parent is French at birth (droit du sang). Children born in France to a parent also born in France are French by operation of law (double droit du sol). These cases are simple recognitions, not applications.

The rest of this article focuses on the by-decree pathway, which covers the vast majority of adult applicants.

Eligibility Before You Apply

Before you even open an ANEF account, verify that you meet the five statutory conditions set by Articles 21-16 and following of the French Civil Code. A weak file gets filtered out fast.

Continuous legal residence of 5 years. You must have lived in France under a valid residence permit for the five years preceding your application. The waiting period drops to two years if you hold a French master's degree or higher. It is waived entirely for statutory refugees, spouses and children of French citizens, and people who have rendered exceptional service to France. Most applicants reach naturalization after a 10-year resident card (CR); check your current permit to see where you sit on the path.

Language assimilation — B2 level, oral and written. The B2 level of the Common European Framework of Reference for Languages has been required since the arrêté du 10 octobre 2025 (in force from 1 January 2026), which raised the bar one notch (it used to be B1) — see also our decoder of the October 10, 2025 decree. You prove it with a DELF B2 diploma, a TCF or TEF certificate at the matching level, or a French secondary or tertiary qualification. Applicants over 60 used to enjoy a partial waiver, but that exemption has been narrowed.

Assimilation to the French community. This condition, assessed during the prefecture interview, covers knowledge of history, culture, institutions, and adherence to the values of the Republic. The 2026 civic test formalizes this evaluation. For a clear map of the scope, see our breakdown of the 5 official topics on the French citizenship test.

Clean B2 criminal record (casier judiciaire B2). No convictions of six months or more of unsuspended imprisonment, and no convictions for crimes against the fundamental interests of the nation, terrorism, or serious offenses against persons. Foreign convictions are cross-checked.

Stable and sufficient income. Regular income (permanent contract, stable self-employment, pensions) proves professional integration. Tax authorities review your last three avis d'imposition (tax notices). Persistent overindebtedness or long-term reliance on minimum social benefits can trigger an ajournement (adjournment).

Building Your Dossier — Required Documents

The document list is long. Prepare a three-part binder: civil status, residence and income, integration. In 2026, several items were added or tightened.

Civil status documents:

• Full copy of your birth certificate, translated by a sworn translator (traducteur assermenté) and legalized or apostilled depending on the issuing country
• Full birth certificates of any minor children
• Marriage certificate if applicable, with sworn translation
• Parents' birth certificates (to establish your nationality of origin)
• Valid passport (all pages)
• Valid residence permit (titre de séjour) on the day of filing

Residence and income documents:

• Proof of address for the last 5 years (utility bills, rent receipts, leases)
• Last three income tax notices (avis d'imposition)
• Last three payslips and employment contract
• URSSAF certificate if self-employed
• Bank statements for the last three months
• Pôle emploi certificate if you received unemployment benefits

Integration documents:

• DELF B2 diploma or equivalent proving your language level (B2 required since the 1 January 2026 reform)
• Certificate of civic training (formation civique, being phased out in favor of the civic test)
• CV and French or foreign diplomas (translated when foreign)
• A €55 tax stamp (timbre fiscal), purchased online at timbres.impots.gouv.fr
• Criminal record extract from every country you lived in as an adult before France (issued within 3 months)

What changed in 2026. Decree 2025-12-12 now requires a pass certificate for the civic test on the by-decree pathway. Applicants with a file already in progress on 1 January 2026 must produce it before the interview if their dossier has not yet been forwarded to the ministry. The official list lives on the Cerfa form no. 12753 at service-public.fr. Before you upload anything, pressure-test your file against the most common French citizenship test mistakes to avoid — they apply to the dossier too.

Submitting via the ANEF Portal

Since 6 February 2023, naturalization-by-decree applications are filed exclusively online through the Administration Numérique des Étrangers en France (ANEF) portal. Paper submissions at the prefecture are no longer accepted, except in narrow dispensation cases.

The 6-step ANEF filing sequence:

1. Create your ANEF account. Go to administration-etrangers-en-france.interieur.gouv.fr, click "Je demande la nationalité française" (I am applying for French citizenship), and create a personal space with an active email address.
2. Fill out the online form. Budget two to three hours. Save frequently. You will enter identity, migration history, family situation, professional history, and motivation for becoming French.
3. Upload scanned documents. PDF or JPG format, 10 MB maximum per file. Sworn translations must be scanned in full, including the translator's stamp.
4. Pay the €55 tax stamp. Buy it online, then enter the 16-digit code directly into ANEF.
5. Submit the application. You will receive a confirmation receipt within 48 hours. Keep it: it serves as proof of filing date in the event of a dispute.
6. Wait for the prefecture summons. Depending on your department, the interview invitation arrives between 6 and 18 months later.

An incomplete file triggers a request for additional documents (demande de pièces complémentaires) through the ANEF messaging system. You have 30 days to respond, or the application is closed without further action. Have a trusted third party review your list before submission — this single checkpoint saves months.

The Assimilation Interview and Civic Test

The prefecture interview is the step that frightens applicants most, usually without cause. Properly prepared, it goes smoothly for the overwhelming majority.

How the interview unfolds. A prefecture officer meets you for 30 to 45 minutes. They verify your identity, walk through your life path, assess your assimilation to the French community (history, institutions, values), and confirm your commitment to the rights and duties of a citizen. This is a conversation, not an interrogation — it is designed to confirm that your integration is real. For the actual questions officers ask, the tone they expect, and the phrasings to avoid, see our prefecture assimilation interview guide.

The civic test — the 2026 cornerstone. Since 1 January 2026, the interview now includes a standardized written test: 40 questions in 45 minutes, with an 80 % pass mark. Questions cover five official topics (principles and values, institutional system, rights and duties, daily life in France, history-geography-culture). For a full walkthrough of the format, read our complete guide to the French citizenship civic test 2026, and rehearse with a free French citizenship practice test under real conditions.

If your interview is weeks away. You have one month? Our 1-month French citizenship test preparation plan maps your daily workload. In every scenario, mobile preparation with French audio sharpens both listening comprehension and pronunciation — two criteria the officer implicitly notes during the interview.

Results. The civic test is auto-graded; you learn your score immediately. A failed attempt can be retaken after a three-month cooling period. The prefecture's overall opinion (favorable, adjourned, unfavorable) follows within two to four months.

Processing Time and Tracking Your File

Naturalization is the longest procedure in French immigration law. Plan generously, stay patient, and monitor your file actively.

Average duration: 18 to 24 months between ANEF submission and publication in the Journal officiel. That headline average hides wide gaps between prefectures. Paris, for instance, sits near the slow end because volume and staffing never balance.

Prefecture	Average filing → interview	Average filing → decree
Paris	14-18 months	28-32 months
Hauts-de-Seine (92)	10-14 months	22-26 months
Bouches-du-Rhône (13, Marseille)	12-16 months	24-28 months
Rhône (69, Lyon)	8-12 months	18-22 months
Nord (59, Lille)	10-14 months	20-24 months
Haute-Garonne (31, Toulouse)	6-10 months	16-20 months
Rural prefectures (average)	6-9 months	14-18 months

Source: indicative figures aggregated from the Direction générale des étrangers en France (DGEF) reports and 2024-2025 user feedback. The 2026 numbers factor in the civic test, which adds roughly two months to overall processing.

How to track your file. Log into your ANEF account weekly. Status changes ("under review", "documents requested", "favorable opinion from prefecture", "transmitted to ministry", "decree signed") are logged in real time. Email notifications sometimes trail the portal by several days.

Escalating a silent file. If more than 18 months pass without news after a complete submission, send a registered letter to your prefecture requesting an update. Beyond 24 months, you can escalate to the Défenseur des droits (Rights Ombudsman) or file a motion for recours en carence before the administrative court — a legal request that forces the administration to rule. For broader context on the UK- and US-press coverage of these delays, The Local France tracks prefecture bottlenecks each quarter.

Fees and Hidden Costs

Many applicants underestimate the total bill. Here is the realistic breakdown.

Expense	Range	Notes
Tax stamp (timbre fiscal)	€55	Fixed by Article 960 of the General Tax Code
Sworn translations	€30-€80 per document	Typically €300-€600 for a full file
Apostille or legalization	€10-€30 per document	Free or cheap in EU, variable elsewhere
Foreign criminal record extracts	€0-€50	Free in most EU states
Language test (DELF B2, TCF at matching level)	€100-€250	One-off
Civic test preparation	€0-€40	Cocorico passes start at €14.90
Scans, copies, registered mail	€40-€80	Cumulative over 18+ months
Legal or nonprofit assistance	€0-€500	Optional but useful in complex cases

Realistic total budget: €500 to €1,200 for a standard individual file. Add €200 to €400 per additional family member in a collective naturalization. The civic test itself is free — it is built into the prefecture interview and cannot be billed separately. If you fail and retake after three months, there is still no fee, but the delay does push your decree publication back.

Welcome Ceremony and Receiving the Decree

Once the prefecture forwards your dossier to the Ministry of the Interior (specifically the sous-direction de l'accès à la nationalité française in Rezé, near Nantes), the ministry has a theoretical 18 months to sign the decree. In practice, add another 6 to 12 months on top.

Publication in the Journal officiel. The collective naturalization decree is published in the JO. You become French on the date of publication, not on the date of the ceremony. Check your name at legifrance.gouv.fr by searching "décret de naturalisation" with the signing month.

The cérémonie d'accueil dans la citoyenneté française (welcome ceremony). Within six months of publication, the prefecture summons you to a republican ceremony. You will receive:

• Your individual naturalization decree
• The livret du citoyen (citizen booklet)
• A copy of the 1789 Declaration of the Rights of Man and of the Citizen
• La Marseillaise sung by the assembly

Life after the ceremony. You can request your first French national ID card and French passport, vote in the next elections, and — symbolically — use the pronoun "nous" in "Nous, peuple français" without hedging. You may keep your original nationality if your country of origin permits it: France imposes no restriction on dual citizenship itself.

FAQ — Your 2026 Naturalization Questions

What happens if my naturalization is refused? A refusal (décision défavorable) or adjournment (ajournement) must be reasoned. You have two months to file a recours gracieux (informal appeal) with the Ministry of the Interior, then a formal appeal before the Nantes administrative court. An adjournment sets a waiting period (often two years) before you can refile. A refusal is final but not irreversible: a new application is possible if you demonstrate a changed situation (longer residence, higher income, civic test passed).

What appeals are available? Three tiers. The informal ministerial appeal (free, two-month window). The contentious appeal before the Nantes administrative court (two months after the informal appeal is rejected, or after two months of silence). And, at the top, a cassation appeal before the Conseil d'État (two-month window). A lawyer specialized in immigration law materially improves your odds at the contentious stage.

How long does the marriage pathway take? The declaration by marriage is faster: 12 to 18 months on average between filing and registration. You will need four years of marriage, continuous emotional and financial life together, B2 French (raised one notch by the arrêté du 10 octobre 2025), and — since 2026 — a civic test pass for any application filed after 1 January 2026.

Can I keep my original nationality? France permits dual nationality without restriction. Whether you can actually hold both depends on your country of origin. Several countries (India, China, Japan, and a handful of African states) require renunciation of the original nationality when another is acquired. Confirm with your consulate before you finalize your French application.

Is naturalization still possible after 60? Yes, without any age limit. Applicants over 60 historically benefited from a partial language-test waiver, but that exemption has been narrowed since 2020 and the 2026 civic test applies to everyone regardless of age. Adapted preparation with French audio and spaced repetition for the French citizenship test compensates effectively for being decades out of school.

Prepare the Civic Test Now with Cocorico

The civic test is now the decisive filter on your by-decree naturalization. 80 % correct, 40 questions, 45 minutes, no room for error on the core topics. A perfect dossier will not save a failed test.

Cocorico turns civic preparation into a 10-minute daily habit. You work through the five official topics, review what you forget via spaced repetition, listen to every question in French to master pronunciation, and sit mock exams under real conditions.

Start today:

• Free trial — 5 lessons per topic, no credit card
• 50 French citizenship test questions and answers to spot the traps early
• Passes at €14.90 / €24.90 / €39.90 depending on your timeline
• Take a free mock exam to benchmark your current level

More than 80 % of our users pass the civic test on their first attempt. Your naturalization should not fail on a quiz — prepare for it the way it deserves.

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Official sources

• service-public.fr — Naturalization by decree
• ANEF — Administration Numérique des Étrangers en France
• Légifrance — Decree 2025-12-12 on the civic test
• The Local France — immigration coverage
• French Civil Code, Articles 21-14 through 21-27
• Ministry of the Interior, sous-direction de l'accès à la nationalité française (SDANF), Rezé

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