Loading…
A SIRET is the 14-digit identifier of a French business establishment: the company’s 9-digit SIREN followed by a 5-digit establishment code (NIC). Check any SIRET or SIREN below against the official French register, and get the computed intra-EU VAT number.
SIRET = SIREN (9 digits, the company) + NIC (5 digits, the establishment)
Live lookup in the official French government register
Intra-EU VAT number computed from the SIREN with its control key
Four French identifiers that look alike and serve different purposes. Mixing them up delays invoicing, banking files and incorporations.
Nine digits assigned by INSEE at registration, unique and permanent. It identifies the legal entity itself and appears on the Kbis extract and on invoices.
Fourteen digits: the SIREN followed by the 5-digit NIC designating one specific establishment. A company has as many SIRETs as it has establishments.
FR + a 2-digit key + the SIREN. The key formula is (12 + 3 × (SIREN mod 97)) mod 97. The checker computes it for you.
Thirty seconds that prevent disputes and rejected files.
For foreign companies invoicing French clients, the SIRET check is the first reflex: it confirms the counterparty exists and is active, and the computed VAT number is what belongs on intra-EU invoices once confirmed on VIES. The least-known point is fiscal: paying an invoice that carries an invalid or closed SIRET can jeopardise VAT recovery in an audit.
The SIRET is the 14-digit identifier of one French business establishment: the company’s 9-digit SIREN followed by a 5-digit establishment code called NIC. It is issued by INSEE at registration and appears on invoices, payslips and official filings.
The SIREN (9 digits) identifies the company as a legal entity; the SIRET (14 digits) identifies each of its establishments. One company, one SIREN, possibly several SIRETs.
Type it into the checker above: it validates the checksum, then queries the official French open-data register and returns the company name, status and address. No account needed.
The French VAT number is FR + a 2-digit key + the SIREN, where the key equals (12 + 3 × (SIREN mod 97)) mod 97. The checker computes it automatically. Confirm activation on VIES before intra-EU invoicing.
By registering a French presence: a subsidiary, a branch or a permanent establishment, filed through the INPI one-stop shop. Our firm handles the French side of these registrations for foreign groups, in English.
Checker queries the official public register live. Updated July 2026.
Company registration, VAT setup and French compliance for foreign businesses: the firm answers in English within 24 to 48 hours.