You’ve come across this word while looking for information on the 2026 e-invoicing mandate, and no one seems able to explain it without jargon. Here is Factur-X explained as if over coffee.
The analogy that changes everything
Imagine a classic PDF invoice, the kind you already send by email today. Now imagine that inside this same file, without changing its appearance, a second layer is hidden: a digital identity card for the invoice, with each piece of information stored in a precise field, automatically readable by a computer.
That is exactly what Factur-X is: a normal PDF, plus invisible structured data inside.
Why France chose this particular format
There are several ways to structure an electronic invoice. France made a pragmatic choice with Factur-X: it remains readable by both a human AND a machine, at the same time. Some purely structured formats do not display at all if you open them normally. Factur-X avoids this problem.
Factur-X is not the same everywhere in Europe
A point that creates a lot of confusion: Factur-X is used in France and Germany, but not in Belgium or the Netherlands, which use a different format, UBL, transmitted via a network called Peppol.
If you invoice clients in several European countries, remember this: the right format depends on the destination country, not yours.
How to generate one without any IT knowledge
In practice, you don’t need to understand the internal mechanics to use it. A tool like Factilix generates the compliant file for you: you fill in the invoice information as you normally would, and the Factur-X (or UBL, depending on the client’s country) file is produced and automatically verified, ready to be transmitted.
Article updated on July 11, 2026. Regulatory timeline verified against official sources (impots.gouv.fr, legifrance.gouv.fr). Dates may change — always check the most recent version on government websites.