In France, the SIRET number serves as a unique 14-digit identifier issued by INSEE (National Institute of Statistics and Economic Studies) to legally established companies and associations registered with the Prefecture.
Every new business in France receives a SIRET upon formation, confirming its legal existence. This essential code must appear on invoices, quotes, payslips, and all official documents. Here's a clear breakdown of its structure and the process to obtain it.
The SIRET (Système d'Identification du Répertoire des Établissements, or Computer System for the Directory of Companies in the Territory) consists of 14 digits: a 9-digit SIREN number unique to the legal entity, followed by a 5-digit NIC (Internal Classification Number) specific to the establishment.
For instance, a SIRET like 123 568 941 00056 breaks down as:
Key distinction: The SIREN identifies the legal unit regardless of location or activity, while the SIRET pinpoints a specific geographic site where that unit operates. Multi-site companies thus receive multiple SIRETs.
The registration process varies by business type and activity.
Sole proprietorships, LLCs, SAs, SASUs, or EURLs register via the Chamber of Commerce and Industry (CCI). Civil companies apply at the commercial court registry.
Craft businesses submit to the Chamber of Trades and Crafts' Business Formalities Center (CFE). Complete within one month of starting, or notify the Chamber president by registered letter if delaying to the next month.
No action needed—your SIRET and SIREN arrive by mail within 15 days of registration.
1901 law associations get a SIRET after Prefecture registration grants legal personality.
SIRET numbers are public record. Check the official commercial court registry website to verify any company's SIRET or SIREN. Safeguard yours upon receipt—no duplicates are issued.
