For French citizenship applications submitted since January 1, 2026, applicants must prove a B2 level in French, both spoken and written, in accordance with Decree No. 2025-648 of July 15, 2025.
This requirement applies to naturalisation, reintegration, and declarations by marriage. Before 2026, a lower level (often B1) could be accepted depending on the procedure.
If you are not at B2 yet, you may want to start with a B1 overview before moving to B2.
Table of Contents
Required level for French citizenship
Applicants must demonstrate a level of French at least equal to B2 of the Common European Framework of Reference for Languages (CEFR), in both oral and written communication.
Date of application
The B2 requirement applies to citizenship applications submitted from January 1, 2026.
Accepted proof of B2 level
The French administration accepts in particular:
- A diploma or qualification certifying a level at least equivalent to B2.
- TCF IRN with a result at least equal to B2.
- TEF IRN with a result at least equal to B2.
Validity of language tests
- DELF B2: diploma valid without time limit.
- TCF IRN: certificate generally valid for 2 years.
- TEF IRN: certificate generally valid for 2 years.
Summary
| Requirement | Before 2026 | Since Jan 1, 2026 |
|---|---|---|
| French citizenship | B1 in many cases | B2 minimum (spoken + written) |
FAQ
Which French level is required for citizenship?
Since January 1, 2026, the required level is B2 in both spoken and written French.
Is DELF B2 mandatory?
No. Other accepted proofs include TCF IRN or TEF IRN at B2 level.
Do TCF and TEF expire?
Yes. These certificates are generally valid for two years.
