Jsonpage · SIREN and SIRET API

France e-invoicing 2026: the list of mandatory invoice mentions

With the French e-invoicing reform, the mandatory mentions of an invoice grow by four items: the customer SIREN, the delivery address when it differs, the nature of the operation and the option to pay VAT on debits.

01 / CHECKLIST

The checklist of mandatory mentions

Here is the complete checklist, the articles that apply and a worked example, for foreign businesses invoicing French customers.

The mentions of a business invoice are set by article 242 nonies A of annex II to the French tax code (CGI). An electronic invoice must carry the same mentions as a paper one. The list, in the order of the text:

  • name, identification number and address of the supplier and of the customer;
  • the supplier's VAT number, and the customer's in the cases provided for (intra-EU supplies, reverse charge);
  • the issue date and a unique number based on a continuous chronological sequence;
  • the delivery address, if it differs from the customer's address;
  • for each good or service: precise description, quantity, unit price excluding VAT, VAT rate or exemption;
  • price reductions already granted at the date of the operation;
  • the date of supply, if it differs from the invoice date;
  • the total excluding VAT and the VAT, by rate;
  • the nature of the operation: goods, services or both;
  • the option to pay tax on debits, if chosen;
  • where relevant, the exemption reference, "Autoliquidation" (reverse charge), "Autofacturation" (self-billing) or the mention of a special scheme.

Payment mentions from the French Commercial Code come on top: payment terms, the rate of late-payment penalties and the fixed recovery indemnity. A practical summary is given by economie.gouv.fr (in French).

Free diagnosis of your customer fileDrop a CSV, TXT or Excel export on the Customer file page: the diagnosis appears without an account, and you only pay to download the corrected file, from €29 excl. VAT.
02 / NEW MENTIONS

The four new mentions

The decree of 7 October 2022 added to article 242 nonies A. According to the French tax authority's table of invoice data, these data are expected from 1 September 2026.

The customer's SIREN

The customer's identification number, its 9-digit SIREN, must appear on the invoice. For the difference with the SIRET, see SIREN and SIRET: what is the difference?. This is the mention that causes the most trouble, since it needs an up-to-date customer file: see e-invoicing: the customer SIREN becomes mandatory.

The delivery address

Required only when the place of delivery of the goods differs from the customer's address. With no goods, or the same address, there is nothing to add.

The nature of the operation

The invoice states whether it covers a supply of goods, a supply of services, or both on the same invoice.

The option for VAT on debits

A business that has opted to pay VAT on debits must say so, with the French wording Option pour le paiement de la taxe d'après les débits. With no option, the mention does not appear.

The four new invoice mentionsCustomer SIREN9 digitsDelivery addressif differentNature of operationgoods, servicesor bothDebit optionif chosen
The four mentions added to the usual invoice mentions.
03 / EXAMPLE

Example: a supplier selling equipment and installation

A supplier in Lyon invoices a company in Nantes (fictitious SIREN 123 456 782) for 10 workstations delivered to a warehouse in Rennes, plus their installation. Besides the usual mentions, its invoice must contain:

  • the customer's SIREN, 123 456 782;
  • the address of the Rennes warehouse, since delivery is not made at the Nantes head office;
  • the nature of the operation: supply of goods and of services, so both;
  • Option pour le paiement de la taxe d'après les débits only if the supplier has opted for this scheme.
04 / CALENDAR

Who is concerned, and since when

According to the tax authority's Q&A, every business subject to VAT must be able to receive electronic invoices from 1 September 2026. The obligation to issue them applies on that date to large companies and mid-sized firms (ETI), and from 1 September 2027 to SMEs and micro-businesses. Build the new mentions into your invoice templates now, whatever your size.

Foreign businesses invoicing French customers

Only French companies have a SIREN, so the number you need is that of your French customer. Ask the customer for it, or find it with the company search tool from the company name. For cross-border operations, check with your adviser which rules apply to your invoice, since the French wording of the mentions above is what the French administration expects.

05 / WITH JSONPAGE

With Jsonpage: retrieve the missing SIREN

The slowest mention to put in place is the customer's SIREN. The customer file diagnosis spots numbers that are missing, malformed or tied to a closed company, with no account to create. For file checks, see also Clean a customer file for e-invoicing.

06 / FREQUENTLY ASKED QUESTIONS

Frequently asked questions

What are the new mandatory invoice mentions?+

Four: the customer's SIREN, the delivery address if it differs from the customer's, the nature of the operation (goods, services or both) and the option to pay VAT on debits, if chosen.

From when is the customer's SIREN needed?+

According to the French tax authority, this data is expected from 1 September 2026.

Must the debits option always be mentioned?+

No, only if the business has opted to pay VAT on debits. The wording is Option pour le paiement de la taxe d'après les débits.

Is the delivery address always mandatory?+

No, only when it differs from the customer's address.

Where can I find a customer's SIREN?+

On its commercial documents, or with the Jsonpage company search tool from its name.

07 / RELATED RESOURCES

Keep reading

DIAGNOSIS

Does your customer file hold every SIREN?

The customer SIREN becomes a mandatory mention. Drop your file: the free diagnosis shows the numbers that are missing, malformed or tied to a closed company.