DELF level for French citizenship: what the B2 requirement means

French naturalisation now requires B2 in French. This changed on January 1, 2026. If you are in the process of applying for French citizenship, or planning to apply, B2 is the level you need to certify. DELF B2 is one of the ways to prove it.

The legal change and when it took effect

The change is grounded in Decree no. 2025-648 of July 15, 2025, published on Legifrance. This decree amended Decree no. 93-1362 of December 30, 1993, which governs naturalisation decisions, nationality declarations, and related procedures.

The requirement moved from B1 (the previous threshold for many years) to B2, effective for all applications received after January 1, 2026. Applications that were incomplete as of that date are also subject to the new B2 standard.

The requirement applies to both routes to French nationality:

• Naturalisation by decree (the standard process after five years of legal residence, with some exceptions)
• Naturalisation by declaration at marriage (for foreign nationals married to a French citizen)

What B2 means in practice

B2 is the upper-intermediate level on the CEFR scale. At B2, a person can:

• Understand the main ideas of complex text on both concrete and abstract topics, including technical discussions in their field of specialisation
• Interact with a degree of fluency and spontaneity that makes regular interaction with native speakers quite possible without strain for either party
• Produce clear, detailed text on a wide range of subjects

This is a meaningful step up from B1. At B1, you can handle familiar situations and topics. At B2, you can navigate unfamiliar topics, argue a position, and follow complex conversations. The jump from B1 to B2 typically requires substantial additional study. CEFR estimates put total study hours from beginner to B2 at around 500-600 hours, versus 350-400 hours to B1.

B2 is not just about being understood. It is about being able to hold your own in a complex, unpredictable conversation in French, and to write clearly on topics you have not prepared in advance.

Why DELF B2 is a strong choice for naturalisation

When you submit a naturalisation application, you need to provide documentary proof of your language level. The DELF B2 diploma has two advantages over timed tests like TCF or TEF:

It does not expire. TCF and TEF results are valid for two years. A naturalisation application in France can take considerably longer from submission to decision. If your TCF result expires during that process, you may need to re-test. A DELF B2 diploma, once issued, is permanent.

It is unambiguous at the level. DELF is a pass/fail diploma for a specific level. You either hold DELF B2 or you do not. There is no ambiguity about what the document certifies. TCF gives a score that corresponds to a CEFR level, which some applicants find requires more explanation.

Other accepted proofs of B2 include TCF and TEF results at the equivalent level, and in some cases diplomas from French-language schools showing completion of B2-level programs. Check with the prefecture handling your application for the current accepted list.

How to prepare for DELF B2

DELF B2 has four sections, each worth 25 points. You need 50/100 to pass, with at least 5/25 in each section.

• Comprehension de l'oral (listening). You listen to recordings of increasing complexity and answer comprehension questions. Tasks include filling in information, multiple choice, and identifying the speaker's intent or attitude.
• Comprehension des ecrits (reading). Two longer texts with a mix of question types. The challenge at B2 is time management as much as comprehension.
• Production ecrite (writing). One substantial writing task, typically an opinion or argumentation piece of around 250 words. Graded on task completion, coherence, vocabulary range, and grammar accuracy.
• Production orale (speaking). A three-phase oral exam including a monologue and a discussion with the examiner on a document or topic. Preparation time is included.

Reaching B2 from B1 takes sustained work. The CEFR estimate of 500-600 hours total from beginner to B2 means the gap between B1 and B2 is roughly 150-200 hours of study. Most people preparing for this need a structured plan covering all four sections, not just the speaking or writing sections in isolation.

The citizenship application process: a brief overview

Naturalisation by decree in France requires at minimum five years of legal residence (reduced to two years in some cases, such as higher education in France). The language requirement is one condition among several, including civic integration, tax compliance, and good conduct. Meeting B2 satisfies the language condition; it does not substitute for the others.

Naturalisation by marriage requires that you have been married to a French national and have maintained a stable community of life for a period defined by law. The same B2 language standard applies since January 1, 2026.

For current processing times and the full list of required documents at your prefecture, check the official French public service portal at service-public.fr.

Frequently asked questions

Does an old DELF B1 satisfy the new requirement?

No. The requirement since January 1, 2026 is B2. A DELF B1 diploma, no matter when it was issued, does not satisfy the B2 language standard for applications filed after that date.

Will my TCF result still be accepted?

Yes, if it is at B2 level and still within its two-year validity window at the time the application is assessed. Given processing times, plan carefully. If there is any risk that your TCF result will expire before a decision is made, DELF B2 is the safer documentation.

What is the civic test, and is it separate from the language test?

The same decree that raised the language requirement to B2 also introduced a civic knowledge test. The language proof (such as DELF B2) and the civic test are two separate requirements. Passing one does not substitute for the other. Check the current implementation details with the prefecture.

Is there an exemption to the B2 requirement?

Some exemptions may apply based on age, disability, or prior education in French. These are determined on a case-by-case basis by the prefecture. Do not assume an exemption applies without verifying with the authority handling your dossier.

Written by

Thomas Roy

Thomas leads content at delfprep. He writes the practical guides: which exam you actually need, how registration works, and how the DELF compares with the DALF, TCF, and TEF.