Transformation Commission: when should you think about it?

Updated March 2026 - The transformation commission is a mandatory step in many changes of legal form, in particular when a company becomes a joint stock company (SAS, SA). However, in a majority of files, the need for this mission is only identified at the time of preparation of the documents, even though it conditions the legal security of the entire operation.

See also: Commissioner aux contributions, SARL or SAS and SAS capital increase.

The transformation commissioner is a mission entrusted to an independent professional - auditor, contribution commissioner or expert appointed by the court - whose purpose is to evaluate the financial situation of the company at the time when it changes legal form.

This commissioner examines the value of the property making up the company's assets, verifies the absence of unjustified particular advantages and ensures the general coherence of the operation. Its report is then made available to the partners before the vote on the transformation resolution.

The transformation does not constitute the creation of a new legal entity. The company retains its legal personality, its assets, its contracts and its authorizations. But the change in legal form modifies the rules of governance, the rights of partners and sometimes the tax regime. The commissioner's report provides the transparency necessary for this transition.

The need for an auditor depends on three criteria: the form of departure, the form of arrival and the presence or absence of an auditor in office.

Transformation into a joint stock company (SAS, SA)

Article L224-3 of the Commercial Code provides that, when a company is transformed into a limited company, a transformation commissioner must be appointed. By extension, this logic applies to the transformation into a SAS, a form which shares with the SA the character of a joint stock company.

If the company does not already have an auditor, one must be designated specifically for this mission. The current auditor can draw up the report himself, which simplifies the process and reduces costs.

The particular case of the transformation of SARL

Article L223-43 of the Commercial Code specifically regulates the transformation of the SARL. Three situations arise:

• SARL without auditor which is transformed into a SAS: a transformation commissioner must be appointed to evaluate the company's assets and produce a report;
• SARL with auditor which is transformed into a SAS: the current auditor can establish the transformation report, without additional designation;
• Transformation of SARL into SARL (change in the number of partners, transition to EURL): no transformation commissioner is required, because the legal form remains identical.

The analysis can therefore never be automatic. It requires checking the form of departure, the form of arrival and the situation of the legal control of the accounts.

Other transformations concerned

The transformation commissioner can also intervene in the following situations:

• transition from a SAS to an SA;
• transformation of a civil company into a commercial company;
• transition from an SNC to an SAS or SARL;
• transformation of a SASU into a multi-personal SAS (in certain cases).

Each situation calls for a specific analysis. It is recommended to consult a professional before initiating the procedure.

Several professionals can fulfill this mission, depending on the company's situation:

• the current auditor: this is the most common and most economical solution. He already knows the company, its accounts and its challenges;
• a contribution commissioner: he can be specially designated for the transformation mission;
• an expert appointed by the president of the commercial court: this situation occurs when the partners cannot agree on the choice of commissioner or in the event of a dispute.

Choosing the right professional is not trivial. A commissioner who knows the file will produce a report more quickly and with more precision. This is why we always recommend checking in advance whether the current auditor is able to intervene.

The report of the transformation commissioner must cover several essential elements:

• asset situation: evaluation of the company's assets and liabilities on the date of transformation, with justification for the valuation methods used;
• the value of contributions in kind: if the transformation is accompanied by contributions in kind, these must be evaluated precisely to avoid any subsequent dispute;
• special advantages: the auditor verifies that no partner benefits from advantages not justified by the situation of the company;
• the coherence of the operation: the report examines whether the transformation is consistent with the social interest and the rights of the partners;
• legal and tax consequences: although the report does not replace legal advice, it may mention the main consequences of the transformation.

This report is made available to the partners at the head office for a legal period before the general meeting called to decide on the transformation. The partners must be able to consult it freely to make an informed decision.

Conseil Hayot Expertise: a successful transformation is not limited to the commissioner's report. It is also necessary to re-read the tax system, the social status of the manager, current contracts and the coherence of the new statutes. Each point deserves special attention.

The transformation of a company is a structuring operation that requires rigorous preparation. Here are the main points of vigilance identified in our practice:

Anticipate the appointment of the commissioner

The appointment of the transformation commissioner must take place sufficiently early to allow the production of the report before the general meeting. Too short a deadline may lead to the operation being postponed, with consequences for tax or commercial planning.

Articulate the report with the latest accounts

The auditor's report is based on the latest approved annual accounts. If these accounts are old or if the situation of the company has changed significantly, an intermediate situation may be necessary.

Take care of the provision of the report

The report must be made available to the partners at the head office during the legal period provided for by law. The failure to make it available constitutes an irregularity likely to result in the nullity of the deliberation.

Check the consistency of the new statuses

The statutes of the new legal form must be drafted carefully. They must in particular provide for the rules of governance, the conditions for decision-making and the rights of shareholders. An error in the statutes can have lasting consequences.

Secure the meeting minutes

The minutes of the general meeting which approves the transformation must be drawn up in accordance with legal requirements. It must mention the commissioner's report, the resolutions voted on and the majorities obtained.

Think about post-transformation formalities

The transformation entails several formalities: filing of amending acts at the registry, publication in a legal notice newspaper, modification of registration in the RCS, updating of contracts and administrative authorizations.

Secure your company transformation