Belgium Self-Billing and Peppol E-Invoicing: What Businesses Need to Know
Belgium's transition to mandatory structured B2B e-invoicing has introduced new considerations for businesses managing their invoicing processes. While most companies are familiar with the traditional approach of suppliers issuing invoices to customers, some industries operate differently. In these arrangements, the customer creates the invoice on the supplier's behalf, a process known as self-billing.
Self-billing is not new to Belgium, but exchanging these documents through Peppol requires more than simply reversing the direction of an ordinary invoice. Businesses must consider supplier registration, prior agreements, invoice acceptance procedures, and the technical configuration of their financial systems.
For organizations managing large supplier networks or complex procurement processes, understanding these requirements is essential to maintaining compliant and efficient invoicing operations.
What Is Self-Billing Under Belgium E-Invoicing Rules?
Self-billing is an invoicing arrangement in which the buyer prepares and issues an invoice on behalf of the supplier. Rather than waiting for the supplier to calculate the amount owed and submit an invoice, the buyer generates the document using information already available within its purchasing or accounting systems.
Consider a Belgian retailer purchasing products from hundreds of suppliers. The retailer's systems record incoming deliveries, quantities received, and agreed prices. Instead of requiring each supplier to generate a separate invoice, the retailer can use this information to prepare invoices on their behalf.
This approach is particularly useful in industries where buyers have more immediate access to the information needed to calculate payments, including retail, agriculture, staffing, and consignment sales. However, self-billing does not transfer the supplier's VAT responsibilities to the buyer. The supplier remains responsible for the accuracy of the transaction and its associated VAT obligations.
Under Belgium's e-invoicing framework, self-billing remains permitted, provided both parties agree to the arrangement beforehand, and each invoice is subject to an acceptance procedure.
The important distinction is that the buyer creates the invoice, but the supplier must still approve the invoicing arrangement and accept the documents issued on its behalf.
How Does Self-Billing Work Through Peppol in Belgium?
Peppol provides a standardized network for exchanging structured electronic business documents. For ordinary invoicing, the supplier issues an invoice and sends it through the network to the customer.
Self-billing reverses these roles. The buyer issues the invoice, while the supplier receives it. Although the transaction still represents a sale from supplier to buyer, the electronic document travels in the opposite direction.
Peppol supports this arrangement through its dedicated Peppol BIS Self-Billing 3.0 specification, which distinguishes self-billed invoices and credit notes from ordinary billing documents.
The relevant document type codes are:
- 389: Self-billed invoice
- 261: Self-billed credit note
These codes identify the document's purpose, while the dedicated self-billing specification sets out the corresponding exchange requirements. Recipient registration is a very important consideration.
For ordinary Peppol invoices, the buyer must be registered to receive the relevant invoice document type. For self-billing, the supplier must register to receive self-billing invoices and, where applicable, self-billing credit notes.
A supplier's existing registration for standard Peppol invoices does not automatically mean its system can receive self-billing documents.
Businesses should therefore verify that their suppliers' Peppol service providers support the appropriate document types before beginning electronic self-billing. Once the necessary arrangements are in place, the buyer generates the structured invoice, sends it through Peppol, and the supplier receives it for review and acceptance.
The network handles electronic exchange, but the legal requirement for supplier acceptance remains a separate part of the business process.
What Agreements Are Required Before Businesses Can Use Self-Billing?
Belgian businesses cannot introduce self-billing simply because their accounting software supports it. A prior agreement between the buyer and supplier is required, and every self-billed invoice must be subject to an acceptance procedure.
These requirements are consistent with Article 224 of the EU VAT Directive, which permits customer-issued invoices under agreed conditions. A self-billing agreement should clearly establish which party is authorized to create invoices, which transactions are covered, and how the supplier will review and accept the documents. Businesses should also define practical details such as invoice frequency, payment terms, correction procedures, and the responsibilities of each party.
For example, a buyer generating monthly invoices for a supplier should establish how the supplier will verify the underlying transactions and what happens if the reported quantities or amounts are incorrect.
An agreement should also address how duplicate invoices will be prevented. If both parties independently issue invoices for the same transaction, their accounting records may no longer align. Importantly, registering to receive documents through Peppol does not replace the specific agreement required for self-billing.
Companies should retain their agreements and relevant acceptance records alongside their invoicing documentation to support internal controls and potential VAT audits.
How Should Suppliers Receive and Approve Peppol Self-Billing Invoices?
Receiving a self-billed invoice through Peppol is only one stage of the process. Suppliers must also be able to determine whether the information contained in the document accurately reflects the goods or services provided.
For businesses receiving large volumes of self-billed invoices, this requires a defined approval workflow rather than relying entirely on manual checks. A supplier might receive a self-billed invoice for products delivered during the previous month. Its accounting system should be able to compare the document against delivery records, contractual prices, and any applicable adjustments.
If the information is correct, the invoice can proceed through the agreed acceptance process. If discrepancies exist, the supplier needs a way to dispute the document and request a correction. Belgian rules require an acceptance procedure for each self-billed invoice or credit note. The parties should therefore establish how acceptance is recorded, including whether their agreement permits acceptance when no objection is raised within a specified period.
Businesses should not assume that successful delivery through Peppol automatically constitutes supplier acceptance. Technical delivery confirms that a document has reached its destination, while business acceptance indicates whether the supplier agrees with its contents. A well-configured approval process helps prevent disputes, duplicate records, and incorrect VAT reporting.
How Should ERP Systems Handle Self-Billing Invoices and Credit Notes?
Self-billing introduces additional considerations for ERP and accounting systems because the organization creating the invoice is not the organization supplying the goods or services.
In a conventional invoicing workflow, a company's ERP generally generates sales invoices for customers and receives purchase invoices from suppliers. With self-billing, the buyer's system creates an invoice representing a purchase, while the supplier's system receives a document representing a sale.
Without appropriate configuration, this reversal can create problems with document classification, accounting entries, and automated processing. ERP systems should distinguish self-billed documents from ordinary invoices and map them to the correct accounting workflows.
For buyers, this means generating structured self-billing documents from verified purchasing information while maintaining the supplier's identity and VAT details. For suppliers, incoming self-billed invoices must be processed as sales-related documents rather than incorrectly classified as purchases simply because they were received through Peppol.
Credit notes require the same attention.
When a previously issued self-billed invoice needs adjustment, the correction may be communicated using a self-billed credit note under document type code 261.
For example, if a retailer discovers that fewer products were delivered than originally recorded, the corresponding adjustment must be reflected correctly in both parties' accounting systems. Businesses should ensure that their ERP configuration can associate credit notes with the relevant original transactions and preserve an appropriate audit trail.
Before introducing self-billing at scale, organizations should test document generation, Peppol routing, receipt, approval, and accounting treatment across the complete workflow. These checks are especially important for companies operating multiple ERP systems or managing suppliers through different Peppol service providers.
Connect Self-Billing E-Invoicing Workflows With Storecove
As Belgium's structured e-invoicing requirements become part of everyday business operations, companies need integration strategies that accommodate more than standard invoice exchange.
Organizations must account for different document types, reversed sender and recipient roles, supplier registration, and approval procedures while keeping their financial systems connected. Storecove provides RESTful JSON API-based e-invoicing connectivity that allows businesses to integrate their existing ERP and accounting systems with the Peppol network.
Through a single RESTful JSON API integration, businesses can connect their financial software to supported electronic invoicing networks without developing and maintaining their own Peppol Access Point infrastructure.
For organizations implementing self-billing, the first step is to confirm that the required self-billing document types and receiving capabilities are supported and correctly configured for their specific workflow. The integration should then be tested alongside the company's existing supplier agreements, acceptance procedures, and ERP accounting rules.
Storecove's API-first approach helps businesses manage electronic document exchange through their existing financial environments, reducing the need for disconnected invoicing processes.
Belgium's self-billing requirements highlight an important principle: successful e-invoicing involves more than sending a structured document.
Businesses must ensure that their agreements, accounting systems, and document exchange capabilities work together.
For organizations looking to simplify Peppol connectivity and prepare their invoicing infrastructure for evolving requirements, Storecove offers a practical starting point.
Ready to connect your ERP or accounting system to Peppol?