SIREN Number (Système d’Identification du Répertoire des Entreprises)
What is a SIREN Number?
The SIREN number (Système d’Identification du Répertoire des Entreprises) is the unique identification number assigned to a company in France.
This number is allocated by INSEE when a company is established and remains unchanged throughout the entire lifespan of the business. The SIREN number identifies the company as a legal entity in its dealings with public authorities, customers and suppliers.
The SIREN number is comparable to the company registration number in Belgium and the Chamber of Commerce registration number in the Netherlands.
How is a SIREN Number Structured?
A SIREN number consists of 9 digits.
This number is unique and is assigned only once to a company. Even if the company operates multiple establishments, the SIREN number remains the same.
Each establishment of the company is then assigned a separate SIRET number, which is based on the company's SIREN number
What is a SIREN Number Used For?
The SIREN number is used to officially identify a company in France.
Its main uses include:
- Company registration.
- Social security and tax formalities.
- Communication with public authorities.
- Invoicing and contracts.
- Payroll administration.
- Registration with social security institutions.
The number serves as the basis for almost all administrative procedures relating to a company.
Why is the SIREN Number Important?
The SIREN number confirms that a company is officially registered in France. It enables customers, suppliers and public authorities to verify a company's identity easily.
For employers, it is also required for:
- Hiring employees.
- Social security declarations.
- Tax obligations.
- Dealings with URSSAF and other authorities.
SIREN vs SIRET
The difference between the two numbers is straightforward:
- SIREN identifies the company.
- SIRET identifies a specific establishment or business location.
A company has only one SIREN number, while it may have multiple SIRET numbers if it operates several establishments.
Have questions about a SIREN number or the registration of your business activities in France?
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