Introduction

Becoming French by decree is not a formality. It is an administrative process that takes twelve to thirty months, marked by a thick application (often over fifty documents), an assimilation interview at the prefecture, and sometimes a long wait before the decree is signed in the Official Journal. For many foreigners living in France, it is the culmination of a life project, opening the door to dual nationality, free movement within Europe, the right to vote, and automatic transmission of nationality to future children.

This guide details the naturalization by decree procedure as it actually applies in 2026, under the authority of the Ministry of the Interior and the prefectures. Whether you are Chinese, Moroccan, Algerian, Senegalese, Vietnamese, Brazilian, or Portuguese, the framework is the same — only the consular documents vary. A parallel procedure exists through marriage (declaration), which is theoretically faster; we indicate the key differences to help you choose the right entry point.

Substantive Conditions: What the Administration Checks

Naturalization is a privilege, not a right. Even a complete application can be postponed or rejected if the administration believes you do not meet the spirit of the criteria. Six conditions are examined:

• Regular residence of 5 years in French territory at the time of application. Reduced to 2 years for graduates of a French higher education institution (master's degree or higher), and to 0 for certain veterans or individuals who have provided exceptional services to France.
• Stability of residence: center of your material and family interests in France. If your spouse and children live abroad, the application is almost always postponed.
• Professional integration and stable resources: permanent contract, public service, regular self-employment, or retirement. Recipients of only RSA are rarely naturalized. The administration generally looks at the last three years of tax notices.
• Clean criminal record or compatible: a conviction of more than six months leads to legal incapacity; lesser penalties are examined on a case-by-case basis.
• Assimilation to the French community: knowledge of history, culture, institutions, and adherence to republican values (secularism, gender equality, individual freedoms).
• B1 level of French, both oral and written (since the 2020 decree), proven by a DELF B1 certificate, TCF, or a French diploma at the level of the brevet or higher.

Three typical examples. Wei, a Chinese engineer living in Lyon for seven years, with a stable salary, DELF B2, and two children born in France: solid application. Karim, a delivery driver in Bordeaux for five years on a permanent contract but with eighteen months of RSA in his history: risky application, needs to be strengthened with recent pay slips and a motivation letter. Maria, a Brazilian married to a French citizen for three years in Marseille: she saves time by going through the nationality declaration by marriage (4 years of marriage required) rather than by decree.

Difference with Naturalization by Marriage

Many confuse the two pathways. The differences are significant:

• Decree: 5 years of residence, resources, assimilation, discretionary examination, processing time of 12 to 30 months. No obligation to be married.
• Marriage (declaration): 4 years of marriage to a French citizen (5 years if you have not lived in France for 3 years after marriage), uninterrupted community of life, B1 oral and written, no income condition. Declaration procedure (Article 21-2 of the Civil Code), not a decree. Practical processing time is also long (12 to 24 months) despite its theoretically simpler framework. The prosecutor can oppose within the year following registration.

In practice, if you have been married for a long time, the marriage route is safer (no resource criteria). If you are single or recently married, the decree route is the only option.

The Application: Over 50 Documents to Gather

This is the most laborious step. The Cerfa 12753 form lists the required documents; expect two to four months to gather everything. The main categories include:

• Civil status: multilingual birth certificate (CIEC) or translated by a sworn translator + apostille/legalization, marriage certificate if applicable, children's birth certificates, divorce judgments, family record book.
• Identity and residency: valid passport, complete copies of residence permits from the last ten years, recent proof of residence.
• Resources and taxation: tax notices from the last three years, pay slips from the last twelve months, employment contract, employer certificate, or financial statements for self-employed individuals (Kbis extract, URSSAF declaration).
• Housing and life in France: bills (electricity, internet, phone) for at least 12 months, rent receipts or property deed.
• Criminal record: French extract + criminal record or equivalent from the country of origin and any country where you have resided for more than 6 months in the last 10 years, translated and apostilled.
• Linguistic assimilation: minimum DELF B1, TCF (B1+ score), DALF, or equivalent French diploma.
• Recent identity photos, and a €55 tax stamp (in 2026) to attach to the application.
• Motivation letter: 1 to 2 pages explaining your ties to France, your life project, and your adherence to republican values.

Wei took three months to obtain his authenticated birth certificate in Beijing. Karim had his Moroccan "12s" extract and his criminal record from Casablanca translated by a sworn translator in Bordeaux for €180. Aminata, a Senegalese woman, had to complete her application twice after a request for additional documents from the prefecture.

Submission: Online Platform or Paper

Since 2023, most prefectures have switched to the national platform Online Naturalization (NATALI). You create an account on the Ministry of the Interior's portal, upload your documents (PDF), pay the stamp fee, and sign electronically. Some prefectures still allow paper submissions by appointment.

Upon receipt of the application, the prefecture sends you a receipt. Then expect 3 to 6 months before being called for the interview.

The Assimilation Interview at the Prefecture

This is the step that causes the most anxiety. A prefecture officer (sometimes a police officer or clerk) will meet with you for 30 to 60 minutes. Three objectives: to verify your level of French, your knowledge of France, and the sincerity of your assimilation project.

Frequently Asked Questions in 2026:

• Why do you want to become French? Why now?
• What are the three powers of the Republic? Who is the President? The Prime Minister?
• Name three historical French figures. What happened in 1789? In 1944?
• Is France secular? What does that mean in daily life?
• Gender equality: can you give concrete examples?
• What is your profession? Your income? Your housing?
• Do you plan to keep your original nationality? (dual nationality is allowed by France, but not by all countries — China and India, for example, do not recognize it)
• Do you have children in France? Are your parents and siblings in France or back home?

The officer may also test your spontaneous French (describing an image, reading a short text). The citizen's booklet published by the ministry is the basis for revision. It is freely accessible on service-public.fr.

At the end, a report is written. You sign it after reading (you can request corrections).

Timelines and Outcomes: Favorable, Postponement, Rejection

After the interview, the prefecture sends the application to the Ministry of the Interior (Sub-Directorate for Access to French Nationality), which makes a decision. There are three possible outcomes:

• Favorable: your name is listed on a collective decree published in the Official Journal. You take an oath at a naturalization ceremony (at the prefecture or town hall), receive your French birth certificate, and can apply for a French identity card.
• Postponement: the decision is delayed by 1 to 3 years, allowing you to strengthen a criterion (resources, assimilation, duration of residence). You can reapply after the delay.
• Rejection: reasoned decision. A grace appeal is possible to the ministry within 2 months, followed by a contentious appeal to the administrative court in Nantes (exclusive jurisdiction in this matter).

Actual timelines in 2026: an average of 12 months in the most efficient prefectures (some small provincial prefectures), 20 to 30 months in Paris, Bobigny, Créteil, Marseille. Centralization in Nantes and dematerialization have reduced discrepancies, but the congestion in Paris remains real.

In Summary

• 5 years of regular residence (2 years for master's degree graduates), center of life in France, stable resources
• B1 oral and written proven by DELF, TCF, or French diploma
• Application of 50+ documents: civil status translated/apostilled, 3 years of taxation, foreign criminal record, motivation letter, €55 stamp
• Assimilation interview 30 to 60 min at the prefecture (institutions, values, project)
• Timelines 12 to 30 months depending on the prefecture, decree in the Official Journal
• Marriage route faster if you are eligible (4 years of marriage)

On Pionra

On Pionra, the communities Chinese, Moroccan, Algerian, Portuguese, Vietnamese, Senegalese, and Brazilian share their experiences regarding prefectural timelines, interview questions, and specialized immigration lawyers. Ask your questions on /fr/communautes.

FAQ

My tax notice shows modest income. Can I still be naturalized?

Yes, as long as you are above the poverty line and self-sufficient. A full-time minimum wage job on a permanent contract passes without difficulty. Only receiving RSA does not qualify. An AAH, pension, or disability benefit can compensate. The administration looks at stability more than the amount: three regular years are better than an isolated peak.

I don't have a DELF B1 but I speak French well daily. Is that enough?

No. Since 2020, formal proof is required. A French diploma (CAP, brevet, bac, license) provides equivalence. Otherwise, you need to take the DELF B1 (~ €145) or the TCF for the general public (~ €100) at an accredited center. Expect 1 to 3 months between registration and taking the test.

Can you keep your original nationality?

France allows dual nationality. However, your country of origin may not recognize it (China, India, Japan, Singapore, some Gulf countries) and may require you to renounce it. Check beforehand: the French administration imposes nothing, but your original passport may be canceled in your home country.

My application was postponed for "lack of professional integration." What should I do?

Build a solid application during the postponement period: 12 to 24 additional months of pay slips, ideally on a permanent contract, and reapply at the end. A letter from the employer confirming job stability carries significant weight.

How much does the process cost if I go through a lawyer?

The application alone costs a €55 stamp. An immigration lawyer charges an average of €800 to €2,000 for preparing the application and accompanying you to the interview. This is useful if you have a criminal record, a complex migration history (asylum, regularization), or a decision of postponement to contest.