E-invoicing mandate

E-invoicing in Belgium

A sourced summary of the structured e-invoicing program in Belgium. It is a starting point, not a compliance certificate or proof of delivery.

Peppol is the default Belgian exchange path. An alternative format and route require mutual agreement and must remain convertible to EN 16931; a PDF alone is not a structured e-invoice.

At a glance

Scope: Government and business
Status: In force
First receiving phase: 2026-01-01
First issuing phase: 2026-01-01
Network or channel: Peppol BIS 3.0
Format: EN 16931 (Peppol UBL)

What this means for you

Structured EN 16931 e-invoicing has been mandatory for covered domestic B2B transactions between Belgian VAT taxpayers since 1 January 2026; statutory supplier, customer and transaction exclusions still require review. Separate phased B2G requirements pre-date the B2B start.

What FreeBillGen can verify

For eligible saved invoices, FreeBillGen can prepare generic OASIS UBL and UN/CEFACT CII mappings and run its named internal checks. These mappings are not EN 16931, Factur-X, Peppol, national-CIUS or clearance-platform validation. FreeBillGen does not transmit them through a provider network.

Check this route in Invoice Passport

The free Inbox can manually parse selected UBL/CII supplier files for review. Syntax recognition is not profile validation; manual upload is not a Peppol or government-network receiving endpoint and does not by itself satisfy a receive obligation. Open manual upload

Official sources used

Belgian FPS Finance - e-invoicing (opens in a new tab) Source reviewed 2026-08-17
European Commission - eInvoicing in Belgium (opens in a new tab) Source reviewed 2026-08-17

General information only; not legal, tax, accounting, conformance, or delivery-provider advice. Confirm the current scope, technical profile, and channel with the official source or a qualified adviser.