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Operational playbooks for Belgian e-invoicing: the 2026 B2B mandate, Peppol, Mercurius, legal mentions, credit notes, and day-to-day documents. Each article says what to do, what to avoid, and how to check the result.
Start with who is in scope, then connect through a Peppol access point, then run invoices, advances, credit notes, and structured payment communications. Written for sole traders, SMEs, and accountants. This is not legal advice: confirm your VAT regime with a qualified professional.
Step 1
E-invoicing
Understand the Belgian mandate and what a structured invoice requires.
- Belgian B2B e-invoicing obligation 2026: who must send and receive
- Belgium
- Belgian e-invoicing readiness checklist for 2026
- Belgium
- PDF or structured invoice: choosing the right channel
- Belgium
- B2B vs B2C e-invoicing in Belgium: which channel?
- Belgium
- How to choose e-invoicing software in Belgium: a buyer checklist
- Belgium
- Belgian e-invoicing penalties: escalation without panic
- Belgium
- Franchise and VAT-exempt businesses on Peppol
- Belgium
- Correct a Peppol invoice with a structured credit note
- Archiving Belgian Peppol invoices: XML, PDF, and evidence
- Belgium
- Foreign buyers and sellers: Peppol vs the Belgian mandate
- Belgium
- Belgian B2G and Mercurius: how it differs from B2B Peppol
- Belgium
- Self-billing in Belgium on Peppol
- Belgium
- Peppol versus EDI
- What data must be on a structured invoice
Step 2
Peppol
Connect to the network and exchange invoices through an access point.
- What is Peppol? The open network for structured invoices
- Peppol access point: certified provider in Belgium
- How to join Peppol in Belgium: register and get on the network
- Belgium
- Sole trader Peppol path in Belgium
- Belgium
- Share your Peppol ID with suppliers
- Belgium
- Peppol ID explained: scheme 0208, how to find it, how to request it
- Check a Belgian customer on Peppol before you send
- Belgium
- Your first Peppol B2B invoice in Belgium
- Belgium
- Peppol inbound inbox: triage supplier invoices
- Client not on Peppol: what you can and cannot do
- Belgium
- Fix a rejected or failed Peppol invoice
- Common Peppol invoice validation errors and fix order
- Peppol delivery status: sent, delivered, failed
- Buyer accepted, rejected, or still processing: what you do next
- Accountant Peppol client onboarding playbook
- Belgium
- Multi-entity Peppol in Belgium: one group, several KBO identities
- Belgium
- Switch Peppol Access Point without losing receive
- Peppol test versus production
- Invoice vs credit note capability on Peppol
- Why a customer is not findable on Peppol
Step 3
Invoicing
Issue invoices, credit notes, and quotes correctly in day-to-day work.
- Invoice, credit note, and quote in Belgian practice
- Belgium
- Invoice numbering rules in Belgium
- Belgium
- Mandatory legal mentions on Belgian invoices
- Belgium
- Quote to invoice workflow
- Belgium
- PO number on a Belgian invoice (and how it differs from Peppol Ordering)
- Belgium
- Which Belgian VAT regime changes your invoice
- Belgium
- Construction reverse charge on Belgian invoices
- Belgium
- Advance invoices in Belgian practice and Peppol
- Belgium
- Structured payment communication (OGM) for Belgian invoices
- Belgium
- Recurring invoices and Peppol in Belgium
- Belgium
- ASBL and VZW invoicing in Belgium
- Belgium