Photo par Startup Stock Photos via Stocksnap (CC CC0 1.0)In brief:
- The Kbis certificate is obtained online via the INPI single window, typically within 3 to 8 business days.
- The ACRE grant offers a partial exemption from social contributions in the first year, under conditions.
- Registration costs range from 0 euros for a micro-business to about 250 euros for a company.
- A costed business plan makes it easier to access bank financing and public grants.
What the Kbis certificate is and what it is used for
The Kbis certificate is the official identity document of a company registered in France. It certifies its legal existence and states its name, registered address, share capital and the identity of its managers. Any bank, supplier or business client may request it before signing a contract.
Who needs a Kbis certificate
Every commercial company (SAS, SASU, SARL, EURL) must register and obtain a Kbis certificate. A sole trader or a commercial or craft micro-business receives an equivalent document, while a liberal profession is identified by a Siren number without a Kbis.
The steps to register a business
Since 2023, all registration formalities go through the INPI’s online single window, which replaced the former business formality centers.
The file to prepare
- Signed articles of association (for a company)
- Proof of the registered office address
- ID and a non-conviction statement from the manager
- Proof of share capital deposit
The cost of starting a business
| Structure | Registry fees | Legal notice | Indicative total |
|---|---|---|---|
| Micro-business | 0 euros | Not required | 0 euros |
| EURL / SASU | ~ 45 euros | ~ 150 euros | ~ 200 euros |
| SARL / SAS | ~ 45 euros | ~ 180 euros | ~ 230 euros |
ACRE, a useful grant in the first year
“The ACRE grant reduces social contributions owed for the first year of activity.” — Bpifrance Création, 2026
ACRE does not remove the need to register a business, but it eases the social security burden at the point when cash flow is tightest. It is requested directly during registration.
After registration: the first steps to take
- Open a dedicated business bank account
- Choose between SAS and SARL as a legal structure if this was not settled before registration
- Check whether the French micro-business thresholds fit the project, or whether a company structure is preferable
- Set up a first cash flow tracking routine to start managing cash flow from the early months
Frequently asked questions
How long does it take to get a Kbis certificate?
The average processing time is 3 to 8 business days after a complete file is submitted through the INPI single window, unless a missing document extends the process.
Is the Kbis certificate free?
The Kbis certificate itself is free at registration, but registry fees and the legal notice remain due for a company, roughly 150 to 250 euros in total.
Does a French micro-business need a Kbis?
A commercial or craft micro-business receives a Kbis or an equivalent extract, while a liberal profession receives a Siren number without a Kbis as such.