13/10/2026
🇫🇷 SIREN vs SIRET — what’s the difference?
If you’ve set up a business in France, you’ll probably have come across both of these numbers… and it’s very easy to get them confused!
👉 Your SIREN is a 9-digit number that identifies your business.
👉 Your SIRET is a 14-digit number that identifies a specific establishment of that business.
Your SIRET is actually made up of: Your 9-digit SIREN + a 5-digit NIC
So, the easy way to remember it:
💡 SIREN = the business
📍 SIRET = the establishment
Your SIREN normally stays the same throughout the life of your business, whereas your SIRET can change if you move your business to a new address.
And if a business has several establishments, it can have several SIRETs, but only one SIREN.
For any advice or support setting up your business in France, get in touch 😊