Mandatory E-Invoicing: What Changes for a French Training Organization in 2026

A major tax reform takes effect on September 1, 2026: the generalization of electronic invoicing between VAT-registered businesses in France. It also concerns training organizations, including the smallest structures and independent trainers, whenever they invoice companies, OPCOs (French joint skills operators), or other professionals. With a bit over a month left before the deadline, here is what concretely changes and how to prepare without waiting for the last minute.

A reform that is not limited to large companies

The generalization of electronic invoicing rests on Ordinance No. 2021-1190 of September 15, 2021, whose final timeline was set by Article 91 of the 2024 Finance Act (Law No. 2023-1322 of December 29, 2023). The stated goal is twofold: simplify administrative management for businesses and fight VAT fraud by giving the tax administration near real-time visibility over transactions.

A study published in 2025 in the journal International Tax and Public Finance by Marwin Heinemann and Wojciech Stiller, examining the introduction of mandatory e-invoicing in Italy in 2019, shows that the shift reduced cross-border VAT fraud and cut the Italian VAT gap by €2.2 to €2.6 billion in the very first year of application (see the study on Google Scholar). France is transposing the same logic of transaction control and reliability, on its own timeline.

For a training organization, the reform applies as soon as it invoices professional clients established in France: client companies in intra- or inter-company training, other organizations under subcontracting arrangements, or certain flows tied to OPCOs. Invoices addressed to individuals (trainees self-financing all or part of their training) remain outside the scope of the electronic invoicing obligation itself, but may fall under e-reporting, the obligation to transmit transaction data to the tax administration without going through a structured invoice.

The final timeline: receiving from 2026, issuing based on size

The rollout happens in two stages, with no exception by sector of activity:

• September 1, 2026: every VAT-registered business, regardless of size, must be able to receive electronic invoices. Large companies and mid-size companies (ETI) must also issue their invoices in electronic form starting on this date.
• September 1, 2027: the obligation to issue extends to small and medium enterprises (SMEs), very small enterprises (TPE), and micro-businesses, including those under the VAT exemption scheme.

Nearly all recently created training organizations fall into the very small enterprise or micro-business category. In practice, this means the obligation to issue invoices in electronic format will only apply from September 1, 2027 for the vast majority of this blog’s readers. The obligation to receive electronic invoices, however, from a supplier, a subcontractor, an IT service provider, applies from September 1, 2026, with no distinction by size.

What concretely changes in the organization’s day-to-day operations

The end of PDFs sent by email

Once the issuing obligation applies, a simple PDF file attached to an email no longer meets the regulatory definition of an electronic invoice. You need a structured format that accounting systems can process automatically: Factur-X (a readable PDF with embedded XML data), UBL, or CII. Factur-X is generally the format best suited to small structures, since it keeps a familiar PDF look while embedding the structured data.

The mandatory move through a PDP

The public invoicing portal (PPF), initially envisioned as a free universal solution, was refocused by a July 2024 decision from the DGFiP into a simple directory role: it identifies the Partner Digitalization Platform (PDP) attached to each company to ensure proper invoice routing, but no longer issues or receives invoices itself. Every organization will therefore need to choose a PDP registered with the tax administration, usually a compatible invoicing or management software, to issue and receive its electronic invoices.

Mandatory disclosures unchanged, but the format changes

The usual mandatory disclosures (invoice number and date, description of the service, price, VAT rate or exemption note, professional client’s SIREN number) still apply to the electronic invoice: the reform changes the transmission and processing format, not the required content. Our guide to mandatory invoice disclosures therefore remains fully valid and should be combined with the new format requirements.

The special case of CPF and OPCO flows

Training organizations that invoice OPCOs under subrogation, where the organization receives the OPCO’s funding directly on behalf of the client company, follow a specific invoicing circuit, distinct from CPF funding managed by the Caisse des Dépôts through EDOF. Several OPCOs obtained an alignment of their own digitalization timeline with that of the tax reform, with occasional adjustments in the fall of 2026 while the technical circuits stabilize. If a significant share of your revenue goes through OPCO subrogation, plan ahead to check with your usual OPCOs about their own digital invoicing requirements, which may come on top of the general tax obligation. For everything else, our guides on CPF payment delays on EDOF and OPCO funding refusals remain the go-to references for the day-to-day management of this funding.

Preparing without waiting for the deadline

Four concrete actions let you approach the reform without last-minute scrambling:

1. Check your invoicing or accounting software’s compatibility. Most software vendors for training organizations are gradually integrating a PDP or a partnership with an approved PDP: contact your vendor to find out their update timeline.
2. Map your invoicing flows. Professional clients invoiced directly, subcontractors and independent trainers invoiced by the organization, OPCO flows under subrogation: each flow may adapt on a different format or timeline.
3. Get ready to receive from 2026, even though issuing is only mandatory in 2027: a supplier may start sending you electronic invoices as early as September 1, 2026, and your organization must be able to receive and process them.
4. Document the process for the Qualiopi audit trail. The shift to electronic invoicing is a typical example of the legal and regulatory monitoring expected under indicator 23 of the RNQ: keep a written record of your tracking of this reform and the date your invoicing tool became compliant.

For organizations whose cash flow partly depends on clients who are slow to pay, this format change is also an opportunity to review your follow-up and unpaid invoice recovery process, since structured invoicing data generally makes tracking due dates more rigorous.

Take action

The administrative compliance checklist in the Complete Kit Certif (€297, 14-day guarantee) includes invoice and agreement templates already up to date with mandatory disclosures, ready to adapt to the electronic format once you’ve chosen your PDP. Just starting out and want to structure your invoicing from the moment you create your organization? The ebook “Creating Your Training Organization in 30 Days” (€67) devotes a chapter to administrative and accounting obligations, or choose the Complete Pack (€347) that bundles both.