Peppol E-Invoicing in Belgium 2026: What Changes for the Self-Employed

Key Takeaway: Since 1 January 2026, all Belgian businesses must exchange B2B invoices in structured UBL format across the Peppol network. Your quotes are not affected (they continue to be sent and signed normally). HeyDevis generates compliant UBL XML invoices directly, ready to be submitted to your Peppol access point.

Since 1 January 2026, Belgium has made electronic invoicing mandatory for business-to-business (B2B) transactions. No more treating a PDF invoice attached to an email as good enough: your invoices now have to travel over the Peppol network, in the structured UBL format, carrying your BCE number and PCMN accounting structure.

If you're self-employed, a construction tradesperson, a coach, or a service provider in Belgium, this isn't just another technical update: it's a change in the legally required way you transmit invoices. Here's what that actually changes, and how to be ready without rebuilding everything.

1. What is Peppol: the secure network permanently replacing PDF invoices

Peppol is a European network that lets two businesses exchange structured invoices (readable by a computer, not just a human) in an automated, standardised way. In Belgium, the chosen format is UBL (Universal Business Language), built on the PCMN accounting structure.

A PDF invoice scanned by a human is no longer enough for B2B: you need a machine-to-machine file, routed through a Peppol access point (also called a PDP, Partner Digitisation Platform).

2. Who's affected, and when?

The key point: it's the invoice that changes channel. Your quotes continue to be sent and signed as usual. It's the invoicing step that has to become electronic and structured.

3. What you need ready (the silent checklist)

Before you can even transmit, your invoice needs to carry the right data, or the access point will reject it:

• A valid, correctly entered company number (BCE) (e.g. BE 0123.456.789)
• 21% VAT correctly applied and calculated (or whatever rate applies to the service)
• Your business's electronic address / Peppol identifier (usually derived from your BCE number)
• Bank details (IBAN) for payment
• A PCMN structure so your accountant can pull it in without re-entering anything

The most common mistake isn't technical: it's a missing mention (no BCE number, a forgotten VAT rate) that turns a compliant invoice into a rejected one, delaying payment.

4. How to get ready without rebuilding everything

You don't need to become a UBL standard expert. Three steps are enough:

1. Check your BCE number and your Peppol identifier with your access point (bank, accounting firm, or an independent PDP).
2. Decide how you'll produce the invoice: either software that generates the UBL file directly, or manual conversion (not advisable past a few invoices a month).
3. Transmit via your access point: it's the one that routes the file over the Peppol network to your client.

The part that costs you time isn't the sending: it's making sure every invoice is correctly formatted before you send it.

5. In summary: what you need to have in place

To be ready on the e-invoicing side, remember these points:

• Your BCE number, up to date and present on your documents
• Access to a Peppol access point (bank, accounting firm, or independent PDP)
• Invoices in UBL format, not just PDF
• 21% VAT and the PCMN structure applied automatically
• Transmission via the access point, not just a plain PDF email

How HeyDevis generates your UBL invoices

Let's be clear: HeyDevis does not transmit invoices over the Peppol network for you. That role belongs to your Peppol access point (bank, fiduciary, or PDP) or your accountant.

What HeyDevis does do is generate your invoices directly in compliant Peppol UBL format, with 21% VAT, BCE number, and PCMN structure:

• 1-click UBL export: download the compliant XML file directly, ready to upload to your Peppol provider.
• Zero re-typing: signed quotes convert into structured invoices without rewriting a single line item.
• Accounting compliance: automated total calculations and strict adherence to Belgian requirements.

The quote stays free-form (sent and signed as usual). It's the invoice that has to travel over the structured electronic channel, and that's exactly where HeyDevis's UBL format earns its keep.

Electronic invoicing isn't one more burden: it's a step you can hand off to your software and your access point. HeyDevis takes care of producing the compliant file; you stay in control of the transmission.