E-invoicing in Belgium

The Belgian e-invoicing model generally covers transactions between Belgian VAT taxpayers. B2C transactions and cross-border transactions are excluded from the domestic B2B requirement. For B2G transactions, the Mercurius platform connects Belgian public sector entities to the Peppol network.

For organizations operating in an international environment, SAP Belgium is one of the most practical examples of a European trend: e-invoices are becoming structured electronic documents exchanged securely between systems.

Peppol is the primary channel for B2B e-invoice exchange in Belgium. Alternative formats or channels may be used with the consent of the parties, provided they remain compliant with the European semantic standard.

For companies using SAP, however, the most important factor is not just the connection to the Peppol network itself. Other key factors include: correct mapping of invoice data, document validation, handling of attachments, status monitoring, and integration with downstream financial, procurement, and accounting processes.

For B2G processes, support for the Belgian Mercurius platform is also important. The e-invoicing architecture should support various document exchange scenarios without the need to build a separate solution for each case.

In Belgium, the requirement is already in effect, so for companies that have not yet completed their preparations, the most important thing is to quickly secure their processes. This applies in particular to organizations that have a local subsidiary in Belgium but rely on centralized SAP systems, a shared finance center, or an international invoice processing model.

Preparations should include, among other things:

• an analysis of Belgian sales and purchasing processes in SAP,
• identification of documents subject to the B2B requirement,
• Data mapping to Peppol BIS Billing 3.0,
• integration with a certified Peppol Access Point,
• processing of outgoing and incoming invoices,
• validation of XML data and structures,
• support for business attachments,
• monitoring the status of document exchanges,
• integration with subsequent financial processes.

In the SAP environment, the greatest risk is usually not the e-invoice format itself, but rather data quality, non-standard extensions, local document variations, and the lack of transparent process monitoring on the part of business users.

For years, All for One has been helping companies adapt their SAP systems to local legal obligations and compliance requirements. A particularly important point of reference is our experience in adapting SAP to Poland’s mandatory e-invoicing requirements.

From the solution All for One KSeF is already used by over 120 companies that integrate their SAP systems with the Polish National System of e-Invoices (KSeF). These projects have allowed us to build practical expertise in areas that are also key to Belgian Peppol implementations: data mapping, document validation, handling large volumes of invoices, integration with external systems, and developing dashboards for business users. We leverage this experience in our international projects.

All for One Poland is an accredited member of Peppol and supports SAP integration with the Belgian e-invoicing ecosystem. Our solution has already been successfully implemented for Belgian companies operating in international manufacturing environments.

See more:

• E-invoicing at a Belgian tire company
• E-invoicing in Belgium: All for One’s successful Go-Live for the Steel Industry

Our approach is based on the All for One E-Invoicing integration layer and communication via a certified Peppol Access Point. This allows us to integrate SAP with the Belgian e-invoicing model without having to build multiple separate interfaces for different scenarios.

We support various versions of SAP and different architectural models, so the solution can be tailored to local subsidiaries in Belgium, shared service centers, and international manufacturing organizations.

Belgium’s mandatory B2B e-invoicing requirement is the new operational reality. Companies using SAP should ensure that their invoices comply with Peppol BIS Billing 3.0, maintain stable communication with the Peppol network, and fully monitor the process.

All for One will help you prepare your SAP system for e-invoicing in Belgium in accordance with Peppol requirements, drawing on experience from over 120 e-invoicing projects in Poland and practical implementations in Belgian SAP environments.