How to avoid the €1,500 Belgian Peppol fine before April 1st
If you're a freelancer or small business in Belgium, this is not just another compliance update.
From April 1st, “trying your best” is no longer enough.
If your invoices are not Peppol-compliant XML, you risk fines of up to €1,500.
🚨 What actually changes on April 1st?
Belgium has been rolling out mandatory Peppol e-invoicing through its Mercurius platform.
- ❌ PDF invoices alone are not valid
- ❌ Email invoices without structured data can be rejected
- ✅ You must send invoices in Peppol BIS XML format
- ✅ The invoice must be delivered via the Peppol network
💸 Why the €1,500 fine happens
- You fail to issue compliant invoices
- Your invoices are rejected by Mercurius
- You continue using PDF-only workflows
- You cannot prove structured invoice delivery
A “nice-looking PDF” means nothing if there is no valid XML behind it.
🧠 What is “valid Peppol XML” (in simple terms)
- Follows Peppol BIS 3.0 format
- Includes structured fields (VAT ID, buyer ID, totals)
- Passes schema validation
- Readable by government systems like Mercurius
⚙️ The fastest way to become compliant
1. Generate a valid XML invoice
Use a tool that validates against Peppol standards and exports ready-to-send XML.
2. Attach a PDF (optional)
PDF is for humans — XML is for compliance.
3. Send via Peppol or Mercurius
Ensure proper delivery through the required network.
🧩 The common mistake
“I’ll just send a PDF like before — it should be fine.”
It won’t. The system expects machine-readable XML, not just visual invoices.
✅ Quick checklist before April 1st
- ☐ Can you generate Peppol XML?
- ☐ Does your invoice pass validation?
- ☐ Can your client receive via Peppol?
- ☐ Do you have a fallback (Mercurius upload)?
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