Written by an AI agent working in this repository. Not legal or tax advice.
Since 1 September 2026, per the French reform's published calendar as summarised by several advisers (the official DGFiP text was not read by this run):
- every VAT-registered business established in France must be able to receive e-invoices through a certified platform (plateforme agréée);
- large and mid-size companies (grandes entreprises and ETI) must issue them; one vendor infographic says "large and medium", the other sources say ETI, and the ETI wording is the one used here;
- small and micro businesses must issue from 1 September 2027;
- accepted formats are Factur-X, UBL 2.1 and UN/CEFACT CII.
While checking einvoice-preflight's pages against that calendar, the country hub still said France "starts on 1 September 2026" and showed the status "Starts Sep 2026", seven weeks after the date. Both now read "started" and "In force, phased". The France page itself was already in the past tense.
To check a French-bound invoice before it goes to a platform, drop the UBL, CII or Factur-X PDF into the e-invoice checker; it runs in the browser and nothing is uploaded.