The SIREN number serves as a unique identifier for French companies, associations, and various organizations, issued by INSEE. It's required on all business documents, obtained at creation, and remains unchanged. Publicly available, it's easy to retrieve online. Here's a comprehensive guide to the Système d'Identification du Répertoire des Entreprises (SIREN).
The SIREN, or Business Directory Identification System, is an INSEE code uniquely identifying French companies, associations, and organizations. Key entities requiring a SIREN include:
This national identifier stays constant during the entity's operation. To enter the SIRENE directory, an authorized body like the Business Formalities Center (CFE) must request it.
Established in 1973, this system created a national business identification framework and directory, standardizing unique identifiers across France.
The SIREN must appear on all company communications and is used in every interaction with administrations.
Every entry in the SIRENE directory receives a nine-digit SIREN number, automatically assigned. It incorporates:
Comprising nine digits, the first eight are randomly assigned with no specific meaning, while the ninth is a check digit using the Luhn algorithm. To validate: multiply odd-ranked digits (right to left) by 1, even by 2, sum the results' digits, and check if it's a multiple of 10. Note: public entities and companies often start with 1 or 2.
The SIREN (Business Directory Identification System) and SIRET (Establishment Directory Identification System) are closely related. A SIRET combines the nine-digit SIREN with a five-digit NIC code to distinguish multiple establishments within a company. Both are registered by INSEE in the SIRENE directory.
SIREN and SIRET numbers must appear on all documents—invoices, contracts, quotes, declarations, admin forms, and letterheads—as well as company websites.
Retrieve a company's SIREN quickly using its name, manager's name, or address on sites like Sirene.fr or Infogreffe.
