Belgium E-Invoicing Mandate: A Comprehensive Guide

Belgium’s business-to-business e-invoicing mandate came into force on January 1, 2026. Since then, sending a traditional PDF invoice by email alone is no longer sufficient for B2B transactions that fall within the scope of the mandate. Invoices must be issued in a structured electronic format that can be automatically read and processed by software systems.

Three concepts are particularly important in Belgium’s e-invoicing model:

• EN 16931: The core semantic data model of the European e-invoicing standard

• Peppol BIS Billing 3.0: The invoice implementation specification based on EN 16931

• Peppol: The network used to exchange e-invoices between businesses

This guide explains who is covered by Belgium’s e-invoicing mandate, the relationship between EN 16931 and Peppol BIS, how Peppol IDs work, the status of PDF invoices, penalties, and the key requirements businesses should consider for compliance.

A Brief Overview of the E-Invoicing Mandate in Belgium

Belgium’s official e-invoicing portal identifies Peppol as the primary transmission infrastructure for the mandate and Peppol BIS as the main reference format.

What Is the E-Invoicing Mandate in Belgium?

Belgium’s e-invoicing mandate requires VAT-registered businesses to issue, send and receive invoices in a structured format that can be read and processed automatically by software systems.

The legal basis includes the amendment to the Belgian VAT Code published in the Belgian Official Gazette on February 20, 2024, together with the Royal Decree of July 8, 2025, which further clarified the implementation requirements.

One of the most commonly misunderstood points is the difference between an electronic document and a structured electronic invoice.

A PDF sent by email may be digital, but it is not considered a structured invoice. Under the Belgian model, the invoice must contain data that the recipient’s ERP or accounting software can process without manual data entry.

Invoices are exchanged directly between the seller’s and buyer’s Access Points rather than being routed through the tax authority. This is generally referred to as the four-corner model. Under the planned 2028 e-reporting framework, the tax authority is expected to become an additional participant in the reporting flow.

Belgium E-Invoicing Timeline: 2017 to 2030

Belgium first introduced e-invoicing requirements in the public sector, followed by mandatory B2B e-invoicing. The next stage is expected to introduce near real-time reporting to the tax authority.

Who Is Covered by Belgium’s E-Invoicing Mandate and Who Is Exempt?

The general rule is straightforward: when a VAT-registered business established in Belgium issues a domestic sales invoice to another VAT-registered business established in Belgium, the invoice must generally be issued as a structured e-invoice.

Business size does not determine whether the mandate applies. Part-time and secondary self-employed activities may also fall within scope.

Which Transactions Are Outside the Mandate?

• B2C sales: Invoices issued to consumers fall outside the B2B mandate.

• Intra-Community supplies and cross-border services: Transactions taxable in another EU Member State do not fall within Belgium’s domestic mandate.

• Exports: Sales outside the EU are not covered by the domestic B2B requirement.

An important distinction is that an exemption may primarily relate to the obligation to issue an e-invoice. Businesses may still need the technical capability to receive structured e-invoices from their suppliers.

Peppol and Belgian E-Invoicing: Technical Requirements

Belgium has designated Peppol as the default network and Peppol BIS as the reference format for B2B e-invoicing.

Three main components are required:

1. The correct invoice format

2. A certified Peppol Access Point

3. A registered identity on the Peppol network

1. Format: Peppol BIS Billing 3.0

The reference format is Peppol BIS Billing 3.0, an XML-based UBL specification compliant with the European e-invoicing standard EN 16931.

Belgium also applies additional validation rules, including checks related to the formatting of KBO/BCE enterprise numbers.

EN 16931 defines the semantic data model of an electronic invoice, while Peppol BIS Billing 3.0 defines how that model is implemented within the Peppol environment.

In simple terms:

• EN 16931: Defines the common invoice data model

• Peppol BIS Billing 3.0: Defines how this model is implemented for Peppol transactions

• Peppol: Provides the network through which invoices are exchanged

2. Certified Peppol Access Point

Businesses do not connect directly to the Peppol network. They connect through a certified service provider, known as a Peppol Access Point.

Belgium’s Peppol Authority is BOSA, the Federal Public Service Policy and Support.

The invoice flow typically works as follows:

Seller’s system → Seller’s Access Point → Buyer’s Access Point → Buyer’s system

This model allows companies using different ERP and accounting systems to exchange invoices through a common technical framework.

3. Peppol ID: 0208 + KBO Number

In Belgium, a Peppol address can be created using the 0208 scheme code together with the company’s KBO/BCE enterprise number.

Example:

0208:0123456789

The KBO number corresponds to the Belgian enterprise number without the BE prefix used in the VAT number.

An alternative 9925 scheme may be used for businesses that have a Belgian VAT number but are not registered in the KBO.

Businesses can check whether a customer is registered on the Peppol network through the Peppol Directory.

Can a Channel Other Than Peppol Be Used?

Yes, under certain conditions.

If both parties agree, another transmission channel such as EDI or another format compliant with EN 16931 may be used.

However, businesses must still maintain the technical capability to send and receive invoices through Peppol when required.

The free HERMES platform, which was previously used during the transition period for recipients that were not yet ready to receive e-invoices, has also been phased out.

Invoice Content, VAT Rounding and Special Document Types

Structured e-invoices still contain the standard information required on Belgian invoices, including:

• Issue date and transaction date

• Seller and buyer names and addresses

• VAT numbers

• Description and quantity of goods or services

• Unit price

• VAT rate and VAT amount

• Total invoice amount

The difference is that this information is now placed in defined XML fields and must pass technical validation rules.

VAT Rounding Rules

From 2026, VAT on structured e-invoices is rounded on the total amount for each VAT rate rather than on each individual invoice line.

Businesses whose ERP systems calculate VAT rounding at line level should review their configuration, as differences can result in amount mismatches or invoice rejection on the recipient side.

Credit Notes

Credit notes and invoice corrections are subject to the same structured invoicing principles.

Credit notes are transmitted using the relevant Peppol BIS Billing Credit Note structure and exchanged through the Peppol network.

Self-Billing

Self-billing scenarios, where the buyer issues an invoice on behalf of the seller, are also covered.

A separate Peppol profile, BIS Self-Billing, is used for these transactions.

Businesses whose Access Points were not technically ready to support the profile were given an additional tolerance period until June 30, 2026. That period has now ended.

Advance Invoices

Advance or prepayment invoices relating to transactions within the scope of the mandate must also be issued as structured e-invoices.

Belgium E-Invoicing Penalties

Businesses that do not have the technical infrastructure required to send or receive structured e-invoices may face fixed administrative penalties under the Royal Decree of July 8, 2025.

The penalties relate specifically to the absence of the required technical infrastructure.

Tax Incentives: 120% Deduction for E-Invoicing Costs

Belgium introduced a temporary tax incentive to help businesses manage the costs of the e-invoicing transition during the 2024–2027 tax periods.

For eligible SMEs and self-employed professionals, certain e-invoicing-related subscription costs can qualify for an enhanced 120% expense deduction.

Where an additional fee is charged specifically for e-invoicing on top of an existing software package, that amount may need to be identified separately on the supplier invoice.

Larger businesses may also qualify for enhanced investment deductions for eligible digital investments.

The exact tax treatment depends on the nature of the business and the expense, so companies should assess eligibility with their accountant or tax adviser.

What Changes in 2028? Belgium E-Reporting and ViDA

Belgium’s digital invoicing transformation does not end with mandatory B2B e-invoicing in 2026.

On July 18, 2026, the Belgian Council of Ministers approved a preliminary draft law for near real-time reporting of invoice data to the tax authority from January 1, 2028.

The planned reporting obligation would be an additional requirement rather than a replacement for e-invoicing.

Key Elements of the Draft

• Reporting is planned to be two-sided, with both seller and buyer reporting invoice data.

• Reporting is expected to apply independently of whether the invoice has been accepted or booked.

• The annual client listing is expected to be removed for businesses subject to e-reporting.

• The system is intended to support alignment with the EU VAT in the Digital Age, or ViDA, digital reporting requirements scheduled for 2030.

The proposal still needs to complete the legislative process. Final reporting datasets and technical requirements are expected to be defined through further legislation.

For this reason, businesses should distinguish between the current 2026 e-invoicing mandate and the planned 2028 e-reporting framework.

Belgium E-Invoicing Compliance Checklist

The following steps cover both current e-invoicing compliance and preparation for future reporting requirements.

1. Determine your scope
   Identify which legal entities are established in Belgium and which transactions qualify as domestic B2B transactions. Consider branches, VAT groups and fixed establishments separately.

2. Choose a certified Peppol Access Point
   Check whether the provider supports both sending and receiving invoices, as well as relevant scenarios such as credit notes and self-billing.

3. Register your Peppol ID
   Register your company using the appropriate Peppol identifier, such as 0208: combined with the KBO number, and confirm that your business is visible in the Peppol Directory.

4. Review master data
   Ensure customer and supplier records contain the correct KBO numbers and relevant Peppol identifiers.

5. Integrate your ERP
   Configure outgoing invoices to be converted from the ERP into the required Peppol BIS structure and incoming invoices to be transferred back into the ERP or accounting system.

6. Review VAT rounding logic
   Make sure VAT calculations follow the applicable Belgian rules.

7. Test business scenarios
   Test standard invoices, credit notes and self-billing scenarios where relevant.

8. Plan archiving and evidence
   Retain invoice, transmission and delivery records required for audit and compliance purposes.

9. Prepare for 2028 developments
   Maintain data quality and monitor the final e-reporting requirements as legislation develops.

10. Review available tax incentives
    Assess whether eligible e-invoicing expenses qualify for the 120% enhanced deduction before the end of the applicable incentive period.

Complying with Belgium’s E-Invoicing Mandate with JetPeppol

JetPeppol supports businesses in managing their e-invoicing processes through the Peppol network from a single platform.

What Can You Manage with JetPeppol?

• Send and receive Peppol BIS Billing 3.0 invoices: Invoices can be created, validated and transmitted through the Peppol network in Belgium’s reference format.

• Manage credit notes and self-billing scenarios: Relevant Peppol BIS profiles can be supported for different invoice processes.

• View incoming invoices in one place: Supplier e-invoices can be received in the platform and prepared for transfer to the relevant ERP environment.

• Track delivery status: Invoice statuses such as draft, sent, delivered and error can be monitored at document level.

• Use a common infrastructure across multiple markets: Peppol-based invoicing can support requirements across different countries and markets.

If your business operates in Belgium or needs to exchange invoices with Belgian customers, we can assess your current e-invoicing setup together.

Frequently Asked Questions

Is e-invoicing mandatory in Belgium?

Yes. E-invoicing has been mandatory for relevant public-sector invoices since 2024 and for covered domestic B2B transactions between VAT-registered businesses established in Belgium since January 1, 2026.

Is sending a PDF invoice prohibited in Belgium?

A PDF alone is not sufficient for B2B transactions covered by the mandate. It may be provided as a visual copy alongside the structured e-invoice, but it does not replace the structured invoice.

Is Peppol mandatory in Belgium?

Peppol is the default transmission channel. Parties may agree on another EN 16931-compliant solution under certain conditions, but businesses must maintain the ability to exchange invoices through Peppol where required.

How do you get a Peppol ID?

Businesses register through a certified Peppol Access Point. For Belgian businesses, the Peppol ID can use the 0208: scheme together with the KBO enterprise number.

Are foreign companies subject to Belgium’s e-invoicing mandate?

It depends on their establishment status in Belgium. Foreign companies with a branch or fixed establishment in Belgium may fall within scope for relevant domestic transactions. Businesses that only have a Belgian VAT registration without a fixed establishment are generally outside the invoice issuance mandate.

Are B2C transactions included?

No. Consumer transactions fall outside Belgium’s current mandatory B2B e-invoicing regime.

What are the penalties for non-compliance?

For failure to maintain the required technical infrastructure, penalties can amount to €1,500 for the first violation, €3,000 for the second, and €5,000 for subsequent violations.

Was the tolerance period extended?

No. The general tolerance period ended on March 31, 2026. The additional tolerance period for certain self-billing scenarios ended on June 30, 2026.

Is Belgium’s 2028 e-reporting requirement final?

Not yet. The Council of Ministers approved a preliminary draft on July 18, 2026, but the legislative process is still ongoing. The planned effective date is January 1, 2028.

Are e-invoicing costs tax deductible in Belgium?

Eligible SMEs and self-employed professionals may benefit from the 120% enhanced expense deduction for qualifying e-invoicing software costs during the applicable incentive period. Larger businesses may also qualify for enhanced investment deductions, depending on the investment.