Guide · EasyCofounder
Setting up a French SAS with co-founders: articles and key choices
The SAS (société par actions simplifiée, roughly a simplified joint-stock company) is the most common legal form among French startups, because it gives shareholders wide freedom to organise power and bring in investors. This guide is for founders incorporating in France, including international teams: it covers the choices to make as two or three co-founders, the clauses to include in the articles and the mistakes to avoid at incorporation.
Updated on 6 min readBy the EasyCofounder team
In short
- Agree first on the equity split, roles and decision rules.
- Draft suitable articles: president, managing director, approval of new shareholders, majorities and co-founder exits.
- Deposit the share capital, publish a legal notice, register the company and have it all reviewed by a lawyer or accountant.
Contents
- Why do startups in France often choose the SAS?
- SAS, SARL, SASU: what are the differences for co-founders?
- What should the articles of an SAS with several shareholders cover?
- Articles or shareholders’ agreement: what goes where?
- What are the steps to set up the SAS?
- Which mistakes should you avoid at incorporation?
- Frequently asked questions
- Glossary
- Sources
- About this guide
Why do startups in France often choose the SAS?
The SAS is built on wide contractual freedom. Apart from a few mandatory rules, such as appointing a president, the shareholders themselves decide how the company is run, how decisions are made and how shares can be transferred.
That flexibility suits a founding team that wants to spread responsibilities across several executives, plan for a co-founder possibly leaving or prepare for investors coming in with preferred shares.
- The share capital is set freely and can be modest at the start, then increased during a fundraising round.
- Shareholders’ liability is in principle limited to what they contributed.
- Shares are easier to transfer than the shares of a SARL, subject to the clauses in the articles.
- An SAS can issue BSPCE (the French employee stock-option scheme) to employees and executives, subject to conditions, which a SARL cannot.
This treatment comes from article L311-3 of the Social Security Code, whose item 23 covers presidents and executives of SAS companies.
SAS, SARL, SASU: what are the differences for co-founders?
A SASU is simply an SAS with a single shareholder. A founder can start alone as a SASU and later bring in co-founders: the company then becomes an SAS without changing its legal form, provided the articles are updated.
| Criterion | SAS | SARL (French private limited company) |
|---|---|---|
| Freedom in the articles | Very wide, tailor-made organisation | More tightly framed by law |
| Executives | A mandatory president, optional managing directors | One or more managers (gérants) |
| Share transfers | Free or subject to approval, depending on the articles | Statutory approval for transfers to third parties |
| Bringing in investors | Well suited (preferred shares, BSPCE) | Less suited to fundraising |
| Drafting cost | Longer articles to draft | More standardised templates |
What should the articles of an SAS with several shareholders cover?
The articles of association (statuts) are the company’s public document, filed with the register and available to anyone. They should therefore set the essential rules without going into confidential details between co-founders.
- The company name, corporate purpose, registered office and amount of share capital.
- How the shares are split between founders and the nature of the contributions (cash, assets in kind, skills and work).
- The powers of the president and, where relevant, of the managing directors (directeurs généraux), as well as limits on those powers.
- Rules for collective decisions: quorum, simple and qualified majorities, decisions that require unanimity.
- Share transfer clauses: approval of a new shareholder, pre-emption, temporary lock-up.
- Exit clauses: exclusion of a shareholder, buyback of their shares and the method for calculating the price.
President and managing director: who does what?
In many teams, the founder who handles relationships with investors and partners becomes president, while another co-founder is appointed managing director with powers to represent the company. This setup should reflect the division of co-founder roles agreed beforehand.
Articles or shareholders’ agreement: what goes where?
The articles are public and bind all shareholders, present and future. The shareholders’ agreement (pacte d’associés) is a private contract that binds only those who sign it and can contain more detailed commitments.
- In the articles: governance, majorities, approval of new shareholders, and exclusion clauses, which need to appear there to be fully effective.
- In the shareholders’ agreement: vesting, good and bad leaver clauses, non-compete, exclusivity, the detailed division of roles and pay policy.
The two documents must be consistent with each other, which is why it helps to draft them at the same time with the same adviser. Our guide to the shareholders’ agreement details the usual clauses.
The relevant provisions of the French Commercial Code are article L227-13 (shares made non-transferable for up to 10 years), article L227-14 (approval of share transfers) and article L227-16 (a shareholder can be required to sell their shares).
What are the steps to set up the SAS?
- 1Agree among co-founders on the capital, the equity split, the roles and the decision rules.
- 2Draft the articles, ideally with a lawyer or a chartered accountant, and prepare the shareholders’ agreement in parallel.
- 3Deposit the cash contributions in a blocked account with a bank, a notary or the Caisse des dépôts (a French public financial institution), and obtain the deposit certificate.
- 4Have contributions in kind valued by a contributions auditor (commissaire aux apports) where the law or the shareholders require it.
- 5Sign the articles and appoint the president, then publish a notice of incorporation in a legal announcements publication.
- 6File the registration application on the one-stop online portal for business formalities (guichet unique) and wait for the company registration extract.
Which mistakes should you avoid at incorporation?
- Splitting the capital exactly equally without a mechanism to break a deadlock between two co-founders.
- Copying template articles without adapting the exit, approval and majority clauses to your team.
- Granting all shares outright on day one, with no vesting in the shareholders’ agreement.
- Forgetting the rules on executive pay and how they will be decided.
- Overlooking the impact of a future fundraising round or a BSPCE plan on the cap table.
Two co-founders set up an SAS with equal shares and no deadlock clause. When they disagree on bringing in an investor, no decision can be taken and the company loses several months. A qualified majority combined with a mediation procedure would have avoided the stalemate.
To stop such disagreements from escalating, also read our guide to preventing and resolving co-founder conflict.
Frequently asked questions
Can two co-founders set up an SAS together?
Yes. An SAS can have two or more shareholders, with no maximum, and the articles should then set out how decisions are taken if they disagree.
Is there a minimum share capital for an SAS?
French law does not set a high minimum capital for an SAS, but very low capital can worry banks and partners. The right amount is something to discuss with your accountant based on your start-up needs.
Can a SASU become an SAS?
Yes. When a second shareholder joins, the SASU becomes an SAS without changing its legal form. The articles must then be updated and the corresponding formalities completed.
Are the articles enough without a shareholders’ agreement?
Legally, the articles are enough to create the company, but a shareholders’ agreement lets co-founders confidentially cover vesting, departures, non-compete and other useful commitments.
Who should draft the articles of an SAS with co-founders?
The founders can draft them themselves, but for a startup with several founders and a planned fundraise, it is advisable to have them drafted, or at least reviewed, by a lawyer or a chartered accountant.
Glossary
- SAS
- Société par actions simplifiée, a French company form whose organisation is largely set freely in its articles of association.
- President
- The mandatory executive of an SAS, who represents the company towards third parties.
- Approval clause
- A clause that makes the entry of a new shareholder subject to the prior consent of the existing shareholders.
- Pre-emption
- The shareholders’ priority right to buy the shares another shareholder wishes to sell.
Sources
Official texts and reference pages used for this guide
- French Commercial Code, Article L227-1 (Légifrance)
- French Commercial Code, Article L227-14 (Légifrance)
- French Commercial Code, Article L227-16 (Légifrance)
- Service-public.fr, simplified joint-stock company (SAS)
These are French official sources: the rules described apply to companies governed by French law.
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Further reading
- Shareholders’ agreementShareholders’ agreement: what it is for, how it differs from the articles of association, common clauses between co-founders and when to sign it.
- Equity splitSplitting equity between co-founders: criteria, worked reasoning, vesting, cliff and common mistakes. Pointers to start the conversation on the right foot.
- Co-founder vestingCo-founder vesting: the 4-year schedule with a 1-year cliff, good and bad leavers, acceleration and how to set it up in a shareholders’ agreement.
- Understanding BSPCEBSPCE explained: what they are, which companies qualify, how they work from grant to sale, how they differ from free shares and BSA, and building a plan.
About this guide
This guide was written by the EasyCofounder team — a platform that connects founders, talents and startups — and was last updated on November 9, 2026. It draws on common startup practice and on the questions our members ask.
How we write, review and update our guides is explained on our About page.
It provides general guidance and is not legal, tax or financial advice. For your own situation, consult a qualified professional (lawyer, accountant) and the official resources available in your country.