E-invoicing in Belgium: 2026 mandate, PDF vs structured, software

The Belgian B2B e-invoicing obligation from 1 January 2026: who is in, who is out, why you must send and receive, and why a PDF is not enough.

Operational checklist to go live on Belgian B2B structured e-invoicing: Peppol identity, send, receive, validation, and archive.

Decision guide for Belgian B2B: when PDF alone fails, when a hybrid PDF plus structured file works, and how each choice hits bookkeeping.

Decision table for Belgian businesses: when Peppol structured e-invoicing is required, when PDF or email remains fine, and how mixed B2B/B2C firms should split flows.

Criteria checklist for Belgian SMEs: send and receive, Peppol-ready versus PDF tools, certified Access Point, price, sole traders, and why this is not a cash register. Not a product ranking.

How Belgium's fixed administrative fines for missing structured B2B e-invoicing capability escalate, and the operational posture that reduces exposure.

Belgian franchise or VAT-exempt businesses may not send structured B2B invoices like VAT-liable sellers, but they still need a practical Peppol posture to receive supplier invoices.

How Belgian B2B sellers reverse or reduce a sent Peppol invoice: issue a BIS CreditNote, set BillingReference (P9) to the original, and never edit a document already on the network.

Operational archive playbook for structured Peppol invoices in Belgium: what to retain, integrity basics, duration orientation, and a VAT-evidence checklist.

When Belgium's domestic B2B Peppol mandate applies, when cross-border flows stay outside it, and practical steps to check Peppol reachability with foreign counterparties.

Mercurius is the federal platform that receives structured invoices for Belgian public entities. Portal for occasional send, Peppol for the SME, API for the contracting authority. It is not your Access Point.

When the customer issues the invoice for the supplier: written agreement, who appears as seller and buyer, who sends on Peppol, and common pitfalls for Belgian SMEs.

Peppol versus EDI : Peppol n'est pas de l'EDI. Réseau ouvert contre lien privé, coût d'onboarding, quand garder un corridor EDI, et pourquoi le B2B belge passe par Peppol.

Fields a Belgian B2B structured invoice needs so software can book it: parties, lines, VAT, totals. EN 16931 and UBL names for vendors; facts you must get right before send.