CheckFacturePractical guides to invoicing in France
What you need to know to issue and pay compliant invoices in France, with free tools.
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- Mandatory invoice mentions in France in 2026The full list, the 4 new mentions of the reform and the fines.
- French e-invoicing in 2026: the calendar and what changesThe dates (2026, 2027), approved platforms, formats and penalties.
- Factur-X: the hybrid invoice, PDF and XML in one fileWhat Factur-X is, its profiles, and which ones the reform accepts.
- Check a French VAT numberFree tool: check key, number from a SIREN, and confirming it on VIES.
- Check a French SIRET or SIREN numberFree tool: check digit, matching VAT number, official company directory.
- Bank-detail change fraud: spotting a fake IBANWarning signs, the verification procedure and what to do if you've paid.
- Invoicing as a French auto-entrepreneurThe mentions, the EI mention, the VAT exemption (293 B) and e-invoicing.