•      E-invoicing will become mandatory country-wide starting 1.1.2026, primarily through the Peppol network.
•      Domestic invoices must be sent and received as e-invoices via the Peppol network using the Peppol BIS format 3.0. applicable document syntaxes are invoice, credit note, self-billed invoice and self-billed credit note.
•      If both the sender and receiver agree, alternate transfer methods are allowed. However, any transfer method must still support the creation, sending, and receiving of invoices in a structured electronic format that allows for automatic electronic processing (per the EN16931 model). 

          Recommendation: Using Peppol provides the benefits of standardization and the broadest reach of suppliers and buyers.

•      When archiving a received invoice, the business must archive the original document - at Peppol BIS 3.0, regardless of whether the invoice was further enriched.
•      Printing, paper and email will no longer be allowed starting January 1, 2026

E-invoice Sending

(or BaswareOne for Suppliers)

e-Invoice formats, such as

•        Peppol BIS 3.0,
•         XRechnung (Peppol), 
•        TEAPPS 3.0,
•        UBL 2.0
•        Factur-X 1.0.06. 

You can find all supported formats from the Service Description

Ensure that the invoice data includes the Peppol participant ID of your Buyer.

You can continue to provide data to Basware in the same way as at present.

To your Buyers on the Peppol network, Basware will deliver a compliant Peppol BIS 3.0 format

All Belgium taxpayers are expected to be registered as receivers in Peppol.

For customers using Basware's Vault archiving solution, Peppol BIS 3.0 XML is stored directly.

For customers not using Basware’s archiving service, the Peppol BIS 3.0 XML will be made available, for standard e-invoice supported formats, allowing you to download via API or Portal and archive the invoices yourself.

For other ERP specific e-invoice formats, changes might be required to produce the Peppol BIS 3.0 XML.

To hear more about subscribing to Basware Vault, contact your CSM. 

If you do not have a CSM, please raise a Support ticket via Customer Support Portal.

 Log a Case > General Forms > Contact your Account Manager

e-Invoice formats, such as

·        Peppol BIS 3.0,

•   Peppol BIS 3.0,
•   XRechnung (Peppol), 
•   TEAPPS 3.0,
•    UBL 2.0
•    Factur-X 1.0.06. 

You can find all supported formats from the Service Description

As a first step, ensure that you are Peppol registered.

If you are not registered yet, or if you want to add an additional e-invoice address or Peppol registration to your existing set-up, please use the Customer Support Portal.

You will continue to receive data from Basware in the same way as at present.

For customers using Basware's Vault archiving solution, Peppol BIS 3.0 XML is stored directly.

For customers not using Basware’s archiving service, the Peppol BIS 3.0 XML will be made available, for standard e-invoice supported formats, allowing you to download via API or Portal and archive the invoices yourself.

To hear more about subscribing to Basware Vault, contact your CSM. 

If you do not have a CSM, please raise a Support ticket via Customer Support Portal.

Log a Case > General Forms > Contact your Account Manager

EDI

(point to point) connection for Sending and Receiving

While alternative transfer methods, including EDI, are allowed upon agreement, registering via Peppol is simpler than managing multiple alternative agreements.

EDI can continue to be used, if both sender and receiver agree, and the format complies with EN 16931. The sender and receiver are responsible for generating the agreement and ensuring the format complies with EN 16931. Basware does not assume responsibility for making the EDI form compliant.

Basware advises you to discuss with your business partner the possibility of transitioning to Peppol, for its extensive coverage and ease of integration.

For customers using Basware’s archiving solution, Vault, the EDI is directly stored.

To hear more about subscribing to Basware Vault, contact your CSM. 

If you do not have a CSM, please raise a Support ticket via Customer Support Portal.

Log a Case > General Forms > Contact your Account Manager

Paper and PDF

(Receiving: Scan & Capture, Cloudscan and SmartPDF

Sending: Printing)

Receiving: Please provide the Peppol ID to your suppliers for Belgian domestic invoices.

Sending: Obtain the Peppol ID from your Buyer for BE domestic invoices.

When the mandate becomes fully effective, PDF and paper invoices will no longer be permitted. Though PDF and paper copies can still be sent at the same time, the e-invoice will serve as the legal invoice for domestic transactions in Belgium. Therefore, businesses need to prepare to receive electronic invoices.

Processing PDF documents may remain essential for businesses, as cross-border and exempt invoices can still be transmitted in PDF format.

Although alternative transfer methods can be arranged through mutual agreement, registering on Peppol offers a more streamlined process compared to managing numerous separate agreements.

Portal key-in can be used simultaneously, but the e-invoice will serve as the legal invoice for domestic invoices in Belgium.

Basware recommends discussing with your business partner about switching to Peppol for its wide coverage and ease of integration.