Changing a Training Organisation's Legal Form: What Actually Happens to Your NDA and Qualiopi Certificate

After a few years of growth, many training organisation directors reach a turning point: moving from a micro-enterprise or sole proprietorship to a company, or converting their SARL into a SAS to bring in a partner. On paper, it is a management decision. In practice, it is an operation that, depending on its exact nature, can call into question your activity declaration number (NDA) and your Qualiopi certification — or, on the contrary, require only a simple formality. Everything hinges on a distinction that many discover too late.

The question that determines everything: a new legal person, or a simple conversion?

Company law distinguishes between two operations that everyday language often lumps together under “changing legal status.”

Converting a company into another form

Moving from a SARL to a SAS, from an EURL to a SARL, or from a SAS to a SASU: this is a conversion in the legal sense of the term. The company keeps its legal personality, its SIREN number, its capital, its ongoing contracts and its history. Only the governance structure and the applicable legal regime change. Our guide on choosing a legal form for a training organisation covers the differences between these forms; the key point here is that a conversion creates no new entity.

Moving from a sole proprietorship to a company

This is a radically different situation. A micro-enterprise or sole proprietorship has no legal personality distinct from that of the entrepreneur: it cannot be “converted” into a company in the legal sense. Setting up a SASU or EURL to take over the activity means forming a new legal person, with a new SIREN number, even if the training activity continues identically the very next day. The same logic applies to a merger-absorption or a partial contribution of assets to another existing structure.

This distinction — same SIREN number or new SIREN number — is what governs everything that follows.

NDA: amended declaration or a full new declaration

The activity declaration number follows the logic of the legal person, not that of the activity carried out.

SIREN unchanged (company conversion): the change is reported through an amended declaration on the Mon Activité Formation portal, within the 30-day period set by Article R. 6351-8 of the French Labour Code. The 11-digit NDA does not change; only the legal-form field in the file is updated, along with an up-to-date company registration extract and, where relevant, the minutes of the meeting that decided the conversion.

SIREN changed (incorporation, merger, contribution): the new structure must file a complete initial declaration, including form Cerfa 10782, the training programme, proof of capacity, and documents relating to the director — exactly as an organisation that had never operated before would. Since Decree No. 2025-728 of 29 July 2025, in force since 1 August 2025, the DREETS has a two-month processing period from receipt of the complete file — up from thirty days under the previous regime — and silence beyond that period now constitutes acceptance of the declaration. The former NDA, meanwhile, must be the subject of a cessation of activity declaration if the original structure no longer carries out any training activity.

Qualiopi: what follows the legal person, and what does not benefit from it

This is the most widely misunderstood point, and the one that costs the most to organisations that plan for it poorly.

The Qualiopi certificate is not attached to a training activity in general: it is issued to a structure identified by its SIREN and NDA numbers. When the conversion keeps the same SIREN number, the certificate remains fully valid; you simply need to notify the certification body, with supporting documents, so it can update the file and reissue the certificate under the new legal form, generally without a new audit before the next surveillance audit.

When the operation creates a new SIREN number, however, the old structure’s certificate does not transfer to the new one. In the certification body’s eyes, the new legal person has never been audited: it must launch a full certification process, including an initial audit, just like an organisation starting from scratch. Continuity of the team, the training materials or the client base exempts you from none of the steps — only the SIREN and NDA numbers attached to the certificate matter. This is a point consistently confirmed by certification bodies handling this type of file, and it is why the new structure’s initial audit should be scheduled early enough to avoid any gap in certification with funders.

EDOF, OPCOs and funders: a third channel to resynchronise

Beyond the DREETS and the certification body, a change of SIREN number means starting the EDOF listing for CPF funding all over again: the old provider account, tied to the old SIREN number, cannot simply be renamed, and a fresh listing application must be filed for the new structure. Your OPCOs and other regular funders must also be informed of the change in legal identity, with updated agreements and bank details — a mismatch between the SIRENE database, Mon Activité Formation and your funding files is a common cause of blocked payments.

Planning ahead rather than scrambling: the sequence to follow

The most common mistake is signing the new articles of association before assessing the impact on certification, then discovering weeks later that no CPF-funded session can be opened under the new structure’s name for lack of a certificate. The right sequence is to first assess whether the operation keeps or changes the SIREN number, then, if it changes, to file the activity declaration and schedule the new certification body’s initial audit before the actual switchover, keeping the old structure active until the new one is operational on all three fronts — DREETS, certification, and EDOF.

What the research says about the cost of these procedures

The weight of these parallel administrative channels is not unique to vocational training: a 2024 study by Ole Helby Petersen, Jesper Rosenberg Hansen and Kurt Houlberg, published in the journal Public Administration, shows that the learning and compliance costs businesses bear in their interactions with government weigh disproportionately more on smaller structures, which must rebuild a full understanding of the procedures each time something changes (“The administrative burden of doing business with the government,” 2024 — see the study). A training organisation changing legal form finds itself in exactly this position: three administrations and a certification body to resynchronise, with none of the four channels automatically talking to the others.

Checklist before changing legal form

• Determine whether the operation keeps the SIREN number (company conversion) or creates a new one (incorporation, merger, contribution).
• If the SIREN number is kept: file the amended declaration on Mon Activité Formation within 30 days and notify the certification body.
• If the SIREN number changes: file a complete initial declaration for the new structure and plan for a two-month processing period.
• Schedule a Qualiopi initial audit for the new structure before any CPF- or OPCO-funded session.
• Declare the cessation of activity for the old structure if it no longer operates.
• File a fresh EDOF listing application for the new structure if it offers CPF-eligible training.
• Inform your OPCOs and regular funders, and update agreements and bank details.
• Align the switchover date with the actual availability of the new certificate to avoid any gap.

Take action

A poorly planned change of legal form can interrupt months of CPF and OPCO funding while a Qualiopi certificate is rebuilt from scratch. The Complete Kit Certif (€297, 14-day guarantee) provides evidence tables for all 32 indicators to prepare an initial audit under the best conditions, including for a newly created structure. Still launching your organisation under a legal form you already plan to change? The ebook “Setting Up a Training Organisation in 30 Days” (€67) covers the basics of the initial declaration — or choose the Complete Pack (€347) that combines both.