France’s Mandatory E-Invoicing Formats: UBL, CII, and Factur-X Explained for Businesses

• From September 2026, all French businesses must be able to receive electronic invoices; large and mid-sized companies must also issue them, with SMEs following in September 2027.
• Invoices must be sent through certified dematerialisation platforms (PDPs) and use one of three accepted formats: UBL, CII, or Factur-X.
• PDF invoices alone will no longer be valid; invoices must be in structured data formats for automated processing.
• The reform aims to improve data quality, reduce errors and fraud, and speed up accounting processes.
• Compliance requires updating systems, using the Business Directory (SIREN numbers) for recipient identification, and ensuring the ability to handle all three formats.

Source: melasoft.com

Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.

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