Frihet is already compliant with Belgium's mandatory e-invoicing
From January 1, 2026, all companies established in Belgium must issue and receive B2B e-invoices through the Peppol network. Frihet supports Peppol BIS 3.0 natively.
The Belgian e-invoicing mandate
Belgium was one of the first EU countries to implement mandatory B2B e-invoicing. From January 1, 2026, all companies established in Belgium must be able to receive e-invoices through the Peppol network. For sending, the deadline is also immediate for most companies.
Jan 1, 2026
Date of entry into force
All B2B
Companies affected
Peppol
Exchange network
Technical requirements of the Belgian mandate
Format: Peppol BIS 3.0
Invoices must be in UBL 2.1 or CII format, following the Peppol BIS Billing 3.0 profile, which implements the EN16931 standard.
Exchange network: Peppol
Exchange must occur through the Peppol network using a certified Access Point. PDF invoices or email-sent invoices are not accepted.
Identification: Belgian company number
Both sender and receiver must be identified by their Belgian company number (KBO/BCE) in the Peppol identifier.
Archiving: 7 years
E-invoices must be archived for at least 7 years in complete and readable format.
How Frihet handles Belgian compliance
No complex configuration. Frihet does all the technical work for you.
Automatic generation in Peppol BIS 3.0
Frihet automatically generates invoices in UBL 2.1 format compliant with Peppol BIS 3.0 when the recipient is a Belgian company, without changing your workflow.
Sending and receiving via Peppol
Frihet connects to the Peppol network to send and receive e-invoices directly, with no additional intermediaries or manual configuration.
Validation before sending
Every invoice is validated against the Peppol BIS 3.0 schema and business rules before sending. Errors are detected and corrected before rejections occur.
Automatic compliant archiving
Frihet archives all e-invoices in complete format for the legally required period, with search and export access at any time.
FAQ — E-invoicing in Belgium
When did mandatory e-invoicing become effective in Belgium?
From January 1, 2026, all companies established in Belgium must be able to receive e-invoices via Peppol. The obligation to send is also effective from that date for most companies.
What happens if I keep sending PDF invoices to Belgian customers?
PDF invoices are not accepted as e-invoices under the Belgian mandate. Your customer can legally reject them and you may be exposed to tax penalties. The only valid format is Peppol BIS 3.0 through the Peppol network.
Do I need a separate Peppol account?
Frihet generates invoices that comply with the Peppol BIS 3.0 standard and facilitates sending through the Peppol network via integrated Access Point providers. You don't need to manage the technical infrastructure yourself.
Does the mandate affect foreign companies selling in Belgium?
The mandate primarily affects companies established in Belgium. However, if you sell to Belgian companies, they may require you to send them e-invoices through Peppol. Frihet allows you to do this regardless of where your company is registered.
What is Peppol BIS 3.0?
Peppol BIS (Business Interoperability Specifications) 3.0 Billing is the standard technical profile for e-invoices on the Peppol network. It implements the European standard EN16931 and defines precise rules about the XML format (UBL 2.1 or CII) and mandatory fields.
Ready for the Belgian mandate today
Frihet already supports Peppol BIS 3.0 natively. Start free and comply with Belgian regulations effortlessly.
Start free — no credit card required