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Belgian E-Invoicing (Peppol Mandate)

Last updated: 2026-02-26

Sources:financien.belgium.be

Belgian E-Invoicing (Peppol Mandate)

Last updated: 2026-02-26 | Sources: FOD Financiën — E-facturering, Belgisch Staatsblad — Wet elektronische facturering

Current Status

Belgium has made structured e-invoicing mandatory for all domestic B2B transactions since January 1, 2026. This is one of the most comprehensive e-invoicing mandates in the EU.

What This Means

  • All invoices between Belgian VAT-registered businesses must be sent and received as structured electronic invoices via the Peppol network
  • PDF invoices are no longer legally valid for domestic B2B transactions between Belgian entities
  • The mandate applies to all businesses regardless of size, including small enterprises and self-employed workers (zelfstandigen / indépendants)

Technical Requirements

Format: Peppol BIS Billing 3.0 — the standard Peppol invoice format compliant with EN 16931 (European e-invoicing standard).

Network: Invoices must be exchanged via the Peppol network through certified Peppol Access Points.

Identification: Businesses must register on the Peppol network with their ondernemingsnummer (enterprise number, BE 0XXX.XXX.XXX) as their Peppol participant identifier.

How to Comply

Businesses have several options:

  1. Accounting software with Peppol support: Many Belgian accounting platforms (Billit, ClearFacts, Octopus, Yuki) have integrated Peppol sending/receiving
  2. Peppol Access Point providers: Third-party services that handle Peppol connectivity
  3. Government platform: The Mercurius platform (for B2G) can be used for some B2B scenarios
  4. Free tools: The Belgian government has made available basic tools for small businesses through the FOD Financiën website

Exemptions

The following are exempt from the B2B e-invoicing mandate:

  • B2C transactions: Invoices to consumers (non-VAT-registered parties)
  • Cross-border transactions: Invoices to/from businesses in other countries (subject to the other country's rules)
  • Certain VAT-exempt transactions: Some financial and insurance services
  • Simplified invoices (vereenvoudigde facturen) for amounts under €100

B2G E-Invoicing

E-invoicing for invoices to Belgian federal government entities has been mandatory since 2019 via the Mercurius platform using Peppol. Many regional and local governments also require e-invoicing.

Impact on Muckle Users

  • Belgian businesses using Muckle to create PDF invoices should be aware that PDFs are not valid for domestic B2B transactions since January 1, 2026
  • Muckle's PDF generator remains useful for:
    • B2C invoices (to consumers)
    • Cross-border invoices (to non-Belgian businesses)
    • Internal drafting before sending via Peppol
  • Future: Muckle plans to integrate Peppol sending capabilities for Belgian users

Peppol in Belgium

Belgium has been an active participant in the Peppol ecosystem:

  • The Peppol Authority for Belgium is the FOD Financiën / SPF Finances
  • Multiple certified Belgian Peppol Access Points are available
  • The government provides a directory of registered Peppol participants
  • Free support and guidance is available through the FOD Financiën e-invoicing helpdesk

Recent Updates

  • 2026-01-01: Mandatory B2B e-invoicing via Peppol entered into force.
  • 2025-12-15: Final guidance published by FOD Financiën on transitional measures and compliance expectations.
  • 2025-07-01: The law mandating B2B e-invoicing was published in the Belgisch Staatsblad.
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