Glossary · Business management

SASU: what is a Simplified Joint-Stock Company with a Single Shareholder?

6 min read · Updated on 8 July 2026
Definition A SASU (Société par Actions Simplifiée Unipersonnelle) is a commercial company with a single shareholder. It is the single-shareholder version of the SAS. The manager, called the president, is assimilated to an employee: they fall under the general social security scheme. The SASU is subject to corporate tax (IS) by default, with great statutory flexibility.
The full entry
The essentials in brief
  • SASU = single-member SAS: simplified joint-stock company, liability limited to contributions.
  • President = assimilated employee: general social security regime (no supplementary pension or France Travail unemployment).
  • Default tax regime: IS; IR option possible for a maximum of 5 financial years.
  • Dividends not subject to social contributions: subject to social levies (17.2%) and flat tax (30%).
  • High statutory flexibility: flexible capital (minimum €1), custom governance, easier investor entry.
I How does a SASU work?

How does a SASU work?

A SASU is a commercial joint-stock company whose capital is held by a single shareholder, whether an individual or a legal entity. It is managed by a president (who may be the sole shareholder themselves or a third party).

Its main characteristics:

  • Limited liability to contributions: the shareholder’s personal assets are protected, except in cases of mismanagement.
  • Flexible share capital: legally, €1 is sufficient, but a credible capital amount facilitates banking relationships. Half of cash contributions must be paid up at incorporation, with the balance due within 5 years.
  • Statutory flexibility: unlike an SARL, the operating rules (majorities, bodies, approval clauses) are freely defined in the articles of association. This makes the SASU attractive for fundraising.
  • Simple conversion to SAS: as soon as a second shareholder joins, the SASU automatically becomes an SAS without any change in legal form.

In practice, the SASU is the preferred structure for freelancers anticipating growth, consultants who want to pay themselves in dividends, and project leaders planning to bring in investors.

1 €
minimum legal share capital
~80 %
social charges on net salary (assimilated employee)
5 years
maximum duration of the income tax (IR) option
II President’s status and ta...

President’s status and taxation

The president of a SASU is an assimilated employee. They fall under the general social security scheme, like a salaried executive, but without unemployment insurance contributions (no France Travail benefits under this mandate) and without an employment contract.

On remuneration: social charges represent approximately 75–82% of the net salary (employer + employee contributions). In return, social protection is more comprehensive than for a self-employed worker (TNS).

Key point: if the president pays themselves no salary, they pay no minimum social contributions—unlike a TNS manager of an SARL. This is an advantage when the business is starting up.

On profits: the SASU is subject to corporate tax (IS) by default. 2026 rates:

Profit bracketIS rate
Up to €42,50015% (reduced rate under conditions)
Over €42,50025% (standard rate)

The reduced rate of 15% applies if the VAT-exclusive turnover is below €10M and the capital is fully paid up, with at least 75% held by individuals.

Income tax (IR) option: possible for a maximum of 5 financial years, useful in deficit phases or to smooth personal taxation. After this period, the company automatically reverts to IS.

Dividends: not subject to social contributions (unlike SARL/EURL). They are subject to the 30% flat tax (12.8% income tax + 17.2% social levies), unless the progressive scale is chosen.

III Advantages and limitation...

Advantages and limitations of the SASU

Advantages:

  • Limited liability to contributions.
  • General social security scheme coverage (better health/basic pension protection).
  • Dividends exempt from social contributions: potential salary optimisation.
  • Statutory flexibility and scalability towards SAS.
  • Credibility with banks and investors.

Limitations:

  • High social charges on paid remuneration.
  • No unemployment insurance for the mandate.
  • Higher formalities and costs for creation/management than micro-enterprises (articles of association, legal notice, full accounting).
  • Accrual accounting mandatory: balance sheet, income statement, tax return.

Once the SASU is registered, daily management (invoicing, VAT, cash flow monitoring, balance sheet preparation with the accountant) becomes the central challenge. Orizen Support helps managers frame their project before creation and then structure management once the company is launched, with integrated invoicing and management tools.

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IV Frequently asked questions

Answers to the questions we get asked most.

What is the difference between SASU and EURL?

A SASU is a single-shareholder company where the president is treated as an employee (general social security scheme) and is subject to corporate tax (IS) by default. An EURL is a single-shareholder SARL where the manager is a self-employed worker (TNS), subject to income tax (IR) by default. The SASU offers greater statutory flexibility and exempts dividends from social contributions, while the EURL has lower social charges on remuneration but subjects part of the dividends to TNS contributions.

Is the SASU president eligible for unemployment benefits?

No, the SASU president’s mandate does not entitle them to France Travail unemployment insurance, as they do not contribute to this scheme. To cover themselves, a director can take out private unemployment insurance (e.g., GSC or April) or, if they retained open rights before creation, maintain them under certain conditions during the start-up phase.

Can you set up a SASU alone and without a salary?

Yes. A SASU is designed for a single shareholder, and the president can choose not to pay themselves a salary. In this case, they pay no minimum social contributions (unlike a TNS manager of an EURL). They can then remunerate themselves solely through dividends, but note: without a salary, they do not accrue pension quarters or social security coverage under the SASU.

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