E-invoicing mandatory since 1 January 2026

Peppol for Belgium is coming.

Create and validate Peppol BIS Billing 3.0 invoices with the SealDoc API. We are putting the finishing touches to the Peppol connection, so you will soon be able to send directly from SealDoc as well.

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What applies since 1 January 2026

Mandatory for B2B

Belgian VAT-registered businesses exchange their invoices with each other electronically, in a structured format. In practice the standard route runs via Peppol, with Peppol BIS Billing 3.0.

Legal basis

The Act of 6 February 2024, implemented by the Royal Decree of 8 July 2025.

Fines

€1,500 for a first infringement, €3,000 for a second and €5,000 for each one after that.

Retention 7 years

You keep invoices for 7 years (art. 60 of the Belgian VAT Code).

How far along are you?

Answer 3 questions and see where you stand.

Question 1 of 3

Is your business VAT-registered in Belgium?

How it works with SealDoc

  1. 1

    Your software sends the invoice

    As JSON, to the SealDoc API.

  2. 2

    SealDoc creates and checks it

    The Peppol BIS Billing 3.0 invoice, tested against EN 16931 and the official Peppol rules. What does not pass is not created.

  3. 3 Coming soon

    Sending via Peppol

    We are putting the finishing touches to the connection, so you will soon send directly from SealDoc.

Frequently asked questions

Does the obligation also apply to small businesses?
Small businesses can also fall under the obligation; the size of your business is not in itself an exemption.
Is a plain PDF invoice still allowed?
Not between Belgian VAT-registered businesses. They need a structured e-invoice. In practice the standard route runs via Peppol, with Peppol BIS Billing 3.0; parties may, under conditions, agree on another structured format.
Can I already create Peppol invoices with SealDoc?
Yes, via the API. SealDoc creates the Peppol BIS Billing 3.0 invoice from JSON and checks it against EN 16931 and the official Peppol rules before it is created. Sending directly via Peppol from SealDoc is coming: we are putting the finishing touches to the connection.
How long must I keep invoices?
7 years (art. 60 of the Belgian VAT Code).

Peppol BIS invoices from your own software.

Create and validate them today with the SealDoc API.

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