Assimilation interview: how it unfolds and grounds for deferral

By The FrenchPappers team · Published on 20 July 2026 · Last checked on 20 July 2026 · 6 min read

The assimilation interview is the step many people dread. Facing a prefecture officer, you discuss your background, your adherence to the values of the Republic and your knowledge of French society. We explain how it really unfolds, the topics covered and the most frequent grounds for deferral in 2026.

What is the assimilation interview?

The assimilation interview is an individual interview conducted at the prefecture (or at the consulate for applications filed abroad) by a case officer. It is not a mere administrative check: it is the moment when the authorities verify that you meet the condition of assimilation into the French community set out in article 21-24 of the Civil Code. This article requires a sufficient knowledge of the French language, history, culture and society, as well as adherence to the essential principles and values of the Republic.

In practice, this interview shapes the opinion the officer records in your file. It is also on this occasion that, after assessment, you sign the charter of rights and duties of the French citizen, approved by decree no. 2012-127 of 30 January 2012. We regularly assist applicants with this step: the difficulty is almost never the level of knowledge, but the lack of preparation for a particular conversation format.

What the 2026 reform changed

Two major changes apply to applications filed since 1 January 2026. On the one hand, the required language level rises from B1 to B2 of the Common European Framework of Reference for Languages (CEFR), in comprehension and expression, both written and oral. On the other hand, a civic exam is introduced. These changes stem from decree no. 2025-648 of 15 July 2025, which amends decree no. 93-1362 of 30 December 1993 on naturalisation decisions.

How the interview really unfolds

The interview takes place entirely in French, face to face with an officer. No interpreter is allowed: the exchange is designed precisely to assess your oral fluency. The officer has your file and draws on it to start the conversation. The tone varies from one prefecture to another, but the logic remains the same: to check that you express yourself clearly and that you know the country whose nationality you are applying for.

You should not picture this appointment as a school exam with a grade. The officer forms an overall opinion from the exchange. That is why an imperfect answer about a historical date matters less than an inability to hold a conversation or a statement contradicting the values of the Republic.

The topics covered

We stress one important point: there is no "official list of questions" that could be learned by heart. The many collections circulating online are not official documents. The themes, however, are known. They are organised around three main areas.

To prepare for the third area, the reference material is the citizen's booklet (livret du citoyen), published by the Ministry of the Interior. It brings together the expected reference points on history, culture and values. It is also the foundation of the civic exam. Studying this booklet is, by far, the most useful and most reliable preparation.

The language level expected in 2026

The required level is now B2. In concrete terms, B2 corresponds to real autonomy: understanding the essential content of concrete or abstract subjects, expressing yourself clearly and in detail, giving an opinion and arguing a case. The interview is not a language test as such, but your fluency is observed throughout.

The language level is demonstrated beforehand, through a recognised diploma or test submitted with the application. You will find the details of the documents and conditions in our article on the conditions for French naturalisation in 2026.

The most frequent grounds for deferral

A deferral is not a definitive refusal: the authorities postpone their decision and generally set a period after which you may submit a new application. Grounds related to assimilation come up often.

• A language level deemed insufficient during the oral exchange.
• Statements contradicting the principles and values of the Republic.
• Too fragmentary a knowledge of French society and its institutions.
• Resources or a professional situation deemed unstable or insufficient.
• Insufficiently established stability of residence in France.

In our experience, one of the most avoidable grounds remains insufficient preparation: a candidate at the right level who fails to structure their answers or gets flustered by the interview format.

What not to do

• Reciting answers learned by heart: the officer is looking for an exchange, not a recitation.
• Underestimating preparation, thinking that "it will be fine" on the day.
• Making statements contrary to republican values, even out of clumsiness or provocation.
• Giving answers that contradict the information in your file.
• Turning up without having read the citizen's booklet or revised the key reference points.

Frequently asked questions

Is the assimilation interview eliminatory?

There is no "grade" to obtain, but the officer forms an opinion that weighs on the decision. A poorly prepared interview can lead to a deferral. It is therefore a decisive step, without being a scored exam.

Can you bring an interpreter?

No. The interview takes place in French and aims to assess your oral expression. The presence of an interpreter would run counter to its very purpose.

Is there an official list of the questions asked?

No. The collections circulated online are not official documents. Only the themes are known, and the citizen's booklet remains the reference for preparing.

What happens in the event of a deferral?

The authorities postpone their decision and usually set a period before a new application. This is the opportunity to correct the specific point identified, often the language or preparation for the interview.