Chorus Pro: the invoicing portal to the State

Updated March 2026 - Chorus Pro is the public portal for dematerialized invoice management between suppliers and the public sphere. Many companies confuse it with the general reform of B2B electronic invoicing.

See also: Electronic invoicing and ERP, Business digitalization and VAT reverse charge.

The Chorus Pro electronic billing portal is the official and mandatory platform for transmitting your invoices to the State, local authorities, public health establishments and national or local public establishments. Since its generalization in 2017, more than 2.5 million invoices are processed there each month. In 2026, nearly 900,000 suppliers are registered on the portal.

Chorus Pro is a free service set up by the State Financial IT Agency (AIFE). It centralizes the entire life cycle of invoices sent to public buyers: submission, transmission, monitoring of processing status and archiving.

Concretely, Chorus Pro allows the dematerialized management of invoices to:

• the State (ministries, central and decentralized services);
• local authorities (regions, departments, municipalities and their groupings);
• public health establishments (hospitals, university hospitals, public clinics);
• public establishments (universities, consular chambers, public offices).

The portal also covers purchase invoices, purchase orders, certificates of service provided and disbursement notes. Each document follows a validation circuit defined by the public buyer, from the initial deposit to actual payment.

The obligation to use Chorus Pro applies to any company, association or liberal professional which invoices a public buyer, regardless of its size or turnover.

In practice, you should use Chorus Pro if:

• you are responding to a public market (call for tenders, private market);
• you execute a purchase order issued by a community;
• you subcontract a public contract holder;
• you invoice services to a public health or educational establishment.

Micro-entrepreneurs are not exempt. If your client is a public body, using Chorus Pro is mandatory. No minimum amount is provided: an invoice of 50 euros like a quote of 500,000 euros must pass through the platform.

This is the most common confusion. Chorus Pro and the B2B 2026-2027 electronic invoicing reform respond to two distinct logics.

Chorus Pro remains the historic and exclusive tool for billing relations with the public sphere. The B2B reform imposes electronic invoicing between all companies subject to VAT in France. The two systems will coexist: a company which invoices both public and private customers will have to control both circuits.

**The General Directorate of Public Finances (DGFiP) has confirmed that invoices to public buyers will continue to pass through Chorus Pro, even after the B2B reform comes into full force.

Step 1: Create your account on the portal

Registration is free and can be done directly on aife.economie.gouv.fr. You will need:

• your SIRET number;
• an intra-community VAT number;
• the contact details of your company (address, telephone number, email);
• an electronic certificate (optional but recommended for signing invoices).

Step 2: Identify your public buyers

Before submitting an invoice, you must identify the public buyer in the Chorus Pro directory. Each buyer has a service code and, where applicable, a recipient service code. These codes are essential so that your invoice reaches the right person.

Step 3: Submission and monitoring of your invoices

Several deposit methods are available:

• Direct deposit: manual entry or PDF/XML import via the web interface;
• Automatic flow: connection via API or EDI for large volumes;
• EDI/TNT portal: exchange of structured files for large suppliers.

Once the invoice has been submitted, you can follow its status in real time: "submitted", "sent to the buyer", "put into payment", "rejected". Payment deadlines for public entities are set by the public procurement code: 30 days for the State, 30 to 60 days for local authorities and health establishments.

Rejections of invoices on Chorus Pro represent approximately 8% of deposits according to the latest AIFE statistics. The main causes are:

• Incorrect recipient service: the service code does not correspond to the correct contact within the public body;
• Missing references: public contract number, purchase order or legal commitment not provided;
• Attachments missing or illegible: quotes, certificates, delivery notes not attached or in an unusable format;
• Amount inconsistencies: difference between the HT/TTC amount declared and that of the purchase order;
• Incorrect SIRET/TVA data: missing or incorrect intra-community VAT number.

Hayot Expertise advice: if you already work with the public sector, use Chorus Pro as a support point to map your invoicing flows. This approach will also prepare you for the 2026-2027 B2B reform by identifying critical control points and processes to automate.

1. Clarify roles and responsibilities

Who issues the invoices? Who checks them before sending? Who tracks processing status? Who follows up if the deadline is exceeded? These questions should be decided internally even before the first connection to Chorus Pro.

2. Connect your existing tools

If you have an ERP or invoicing software, check if integration with Chorus Pro is possible. Many solutions offer native connectors or add-on modules. The goal is to eliminate manual re-entry and reduce errors.

**To learn more about connection strategies, see our article on Structuring your electronic invoicing flows.

3. Make your customer data reliable

An invoice technically sent correctly but incorrectly referenced (wrong service code, incomplete market reference) may be rejected or see its payment delayed for several weeks. Keep your public buyer reference base up to date: service codes, legal commitments, invoice contacts.

4. Anticipate convergence with B2B reform

The reform of electronic invoicing between companies will come into force gradually from September 2026 for large companies, then 2027 for SMEs and micro-enterprises. If you already invoice via Chorus Pro, you have a head start: you master dematerialization, status monitoring and electronic archiving. All you need to do is extend these skills to your private clients.