French naturalization: complete guide and interview preparation
Naturalization Processing Times by Prefecture
Processing time varies considerably between prefectures, from 12 months in the fastest to over 24 months in the busiest.
Steps to Follow
- File submission on ANEF: 1 to 2 weeks for registration.
- Completeness check: 1 to 3 months.
- Assimilation interview: 2 to 6 months after filing.
- Investigation: 3 to 12 months.
- Decree publication in Official Journal: 1 to 3 months after favorable decision.
- Citizenship ceremony: 1 to 6 months after decree.
Practical Tips
- Paris prefecture is among the busiest — if possible, file in a less busy department.
- A complete file from the start avoids back-and-forth that extends delays.
- You can track progress on ANEF.
- After 18 months of silence, it counts as implicit rejection — you can appeal to the administrative court.
Frequently Asked Questions
How long does naturalization take on average?
12 to 18 months on average, from filing to decree publication. Some prefectures can take over 24 months.
Can I speed up the process?
A complete, well-prepared file is the best way. You can also send a follow-up letter after 12 months.
What if my application is rejected?
You can appeal to the Interior Minister within 2 months, or to the Nantes administrative tribunal. You can also refile after 2 years.
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