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DELF B1 for French citizenship: exam format, pass mark, and preparation

Last updated 2026-09-03

Applying for French citizenship by naturalisation or decree requires official proof of French proficiency at CEFR level B1. The DELF B1 (Diplôme d'Études en Langue Française), awarded by the French Ministry of National Education, is the gold standard certification and holds lifetime validity.

This page details the official DELF B1 examination layout. For legal criteria relating to French naturalisation (residence duration, integration interviews, criminal record checks), please refer to service-public.fr or your regional préfecture.

Structure of the DELF B1 exam

The examination evaluates four fundamental communicative competencies. The written and listening group examinations last a total of 1 hour and 55 minutes, accompanied by a separate individual oral test:

Module / Épreuve Focus Duration Max Points Eliminatory Score
Compréhension de l’oral Listening to interviews, news reports, and conversations ~25 min 25 pts < 5.0 pts
Compréhension des écrits Reading information leaflets, articles, and opinion texts 45 min 25 pts < 5.0 pts
Production écrite Writing an essay, article, or personal letter expressing an opinion 45 min 25 pts < 5.0 pts
Production orale Guided interview, interactive role-play, and presenting a point of view ~15 min (+10 min prep) 25 pts < 5.0 pts

The two pass criteria

Unlike exams that only look at the aggregate total, passing the DELF B1 requires fulfilling two strict conditions simultaneously:

  1. Total Score: You must achieve at least 50.0 points out of 100.0 across all four tests combined.
  2. Eliminatory Barrier: You must score at least 5.0 points out of 25.0 in every individual test. Any score below 5/25 is an élimination, meaning the diploma cannot be awarded even if your total score exceeds 50.

How DELF B1 differs from TCF

Many applicants wonder whether to choose DELF B1 or the TCF (Test de Connaissance du Français). The crucial distinction is longevity: DELF diplomas are valid for life, whereas TCF results expire after exactly 2 years. If citizenship processing takes longer than expected, a TCF certificate may lapse, whereas a DELF B1 remains permanently valid.

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