What is a SIRET number?
Discover everything you need to know about the SIRET number, the unique identifier for French establishments.
SIRET Definition
SIRET (Système d'Identification du Répertoire des Établissements) is a unique 14-digit identifier assigned to each establishment of a business in France. It is managed by INSEE (French National Institute of Statistics and Economic Studies).
SIRET = SIREN (9 chiffres) + NIC (5 chiffres)
SIRET Number Composition
SIREN (9 digits)
The SIREN uniquely identifies the business (legal entity or individual). It is the company's identification number that remains constant regardless of the number of establishments.
NIC - Internal Classification Number (5 digits)
The NIC uniquely identifies each establishment of the same company. It is specific to each geographical location where the business operates.
SIRET Example
Difference between SIRET and SIREN
| SIREN | SIRET | |
|---|---|---|
| Length | 9 digits | 14 digits |
| Identifies | The business | The establishment |
| Uniqueness | One per business | One per establishment |
What is the SIRET number used for?
- Uniquely identify each establishment of a business on French territory
- Carry out administrative procedures (social and tax declarations, etc.)
- Appear on all official company documents (invoices, quotes, contracts)
- Verify the legal existence of an establishment and consult its public information
Important notice
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