Chorus Pro: how a French training organization invoices a government body or local authority

A training organization that wins a training action funded by a région, a commune, or a public establishment often gets the same surprise when it comes to issuing its first invoice: it cannot be sent by email or post, it has to be submitted through a platform called Chorus Pro. This obligation, in force since 2020, is particularly surprising for organizations that had never worked with the public sector before winning a contract or a training agreement funded from public money. Here is how this channel works, exactly who it applies to, and how to approach it without delaying payment for your services.

Chorus Pro, a legal obligation separate from ordinary invoicing rules

Chorus Pro is the electronic invoicing portal developed by the Agence pour l’informatique financière de l’État (AIFE) to receive invoices addressed to French public entities. The obligation to use it stems from ordonnance n° 2014-697 of 26 June 2014 on the development of electronic invoicing, further specified by décret n° 2016-1478. The rollout was phased in by supplier size, from 2017 for large companies up to 1 January 2020, the date from which the obligation applies to all businesses, including micro-enterprises and independent trainers, with no exception based on the size of the structure.

In practice, as soon as a training organization invoices the State, a local authority (région, département, commune, or a public establishment for inter-municipal cooperation) or a public establishment (CNFPT, a university, a GRETA attached to a public school, a hospital, a chamber of commerce), the invoice must go through Chorus Pro. An invoice sent through any other channel, email, postal mail, or a deposit on the buyer’s own extranet, is not valid and can legitimately be refused by the authorizing department, with a direct impact on payment terms.

Who is concerned, and who is not

This obligation only applies to invoices addressed to public entities within the meaning of the 2014 ordonnance. For a training organization, this mainly covers:

• public training contracts won directly from a government body, a région, or a public establishment, in line with what our guide on Qualiopi and public training contracts describes;
• training agreements signed with a local authority, for example for a scheme to train public officials or local elected representatives;
• services invoiced to a public administrative establishment, including when the action is delivered on behalf of a third-party funder.

Conversely, several common funders in the training sector are not covered by Chorus Pro, which regularly causes confusion:

• OPCOs are private-law bodies with a public-service mission, not public entities within the meaning of the ordonnance. An invoice issued directly or through subrogation to an OPCO does not go through Chorus Pro, but through each operator’s own circuits.
• The Caisse des dépôts et consignations for the CPF (personal training account) operates through its own platform, EDOF, with a dedicated invoicing and payment circuit; see our guide on CPF payment terms on EDOF.
• Corporate clients, including publicly owned ones organized as commercial companies, are also not covered by Chorus Pro for their training purchases.

If in doubt about your funder’s exact status, the invoicing clause in the signed agreement or contract generally specifies the expected procedure; failing that, it is best to check with the managing department before issuing the first invoice.

How to submit an invoice through Chorus Pro

Three pieces of information, provided by the public buyer at the time of the order or the contract notification, are essential to submit a valid invoice:

1. The SIRET number of the recipient public structure, which precisely identifies the department that should receive the invoice within an administration that is sometimes made up of multiple entities.
2. The engagement number, an internal reference assigned by the buyer to the order or contract, which allows accounting reconciliation on the public side.
3. The executing service code, where the buyer has defined one, which routes the invoice to the correct processing department within the structure.

Without this information, gathered before the first invoice is submitted, the submission fails or the invoice is misrouted, which delays processing. It is therefore worth requesting it explicitly as soon as the agreement or contract is signed, rather than waiting until the invoicing deadline.

Two submission methods are available depending on how the organization is set up: manual entry directly on the portal, suited to a low volume of public-sector invoices, or automated submission from invoicing or accounting software connected to Chorus Pro via a partner platform (PA), more relevant for an organization that handles multiple agreements with local authorities.

Invoice format: mandatory particulars and supporting documents

Going through Chorus Pro does not remove any of the standard mandatory particulars: invoice number and date, a precise description of the training service delivered, price, VAT or the applicable exemption notice. Our guide on the mandatory particulars of a training organization’s invoice remains the reference to combine with Chorus Pro’s own requirements. Some public buyers also require supporting documents to be attached to the submission (attendance sheet, training completion certificate, signed purchase order): the agreement generally specifies which documents are expected.

Chorus Pro and the 2026-2027 e-invoicing reform: two converging channels

Training organizations discovering Chorus Pro often wonder whether this obligation overlaps with the generalization of electronic invoicing between businesses, which applies to the private sector from 1 September 2026. These are in fact two separate but converging reforms: Chorus Pro has covered relations with the public sector (B2G) since 2020, while the 2026-2027 reform generalizes the same principle to all relations between VAT-registered businesses (B2B). Both rely on similar formats and logic, Factur-X, UBL, or CII, and the routing role Chorus Pro already plays for the public sector foreshadows the role that accredited dematerialization platforms (PDPs) will play for B2B. An organization already familiar with Chorus Pro for its public clients therefore has a head start in approaching the 2026 or 2027 deadline, depending on its size.

A study by Matthieu Bellon, Era Dabla-Norris, Salma Khalid, and Frederico Lima, “Digitalization to improve tax compliance: Evidence from VAT e-Invoicing in Peru”, published in 2022 in the Journal of Public Economics, shows that the shift to structured electronic invoicing benefits small structures first: the authors measure a more than 5% increase in reported sales, purchases, and VAT liabilities in the first year after adoption, with the effect concentrated among small firms and less formalized sectors. Applied to the French context, this suggests that a small training organization that structures its invoicing early, whether through Chorus Pro for its public clients or a PDP for the rest of its activity, gains a reliability and tracking benefit that goes beyond the regulatory obligation alone.

Planning ahead rather than scrambling at the first invoice

Three habits limit unpleasant surprises for an organization that works, or plans to work, with a public funder:

• Set up a Chorus Pro account before you need it, as soon as an agreement or a bid for a publicly funded contract is under way, rather than waiting until the first invoice is due.
• Systematically request the engagement number and service code from the managing department, in writing, when the agreement is signed.
• Document this procedure as part of your administrative monitoring, alongside the legal and regulatory watch expected under indicator 23 of the National Quality Standard, so the whole team knows how to invoice a public client without depending on a single person.

For organizations bidding on contracts as part of a consortium or as a subcontractor, how invoicing is split between co-contractors or routed to the lead contractor deserves to be clarified upfront; our article on subcontracting in public training contracts and the DC4 form covers this in detail.

Take action

Whether you already invoice public clients or are preparing your first contract funded by a région or a local authority, the administrative checklist in the Complete Kit Certif (€297, 14-day guarantee) includes invoice and agreement templates kept up to date with the mandatory particulars, adaptable to both Chorus Pro’s requirements and the private sector’s. If you are just starting out and want to structure your invoicing from the moment you create your organization, the “Create your training organization in 30 days” ebook (€67) devotes a chapter to administrative and accounting obligations, and the Complete Pack (€347) brings both resources together.