August 11, 2026
Posted by: Mustafa Chohan
Category: E-invoicing

Belgium has entered a new era of digital invoicing. Since 1 January 2026, structured electronic invoicing has become mandatory for nearly all B2B transactions between Belgian VAT-registered businesses. A PDF invoice sent by email is no longer sufficient for transactions within the scope of the mandate.

At the heart of Belgium’s e-invoicing framework is the Peppol network, which enables businesses to exchange standardized, machine-readable invoices directly between their accounting or ERP systems.

For companies using ERP platforms such as Microsoft Dynamics 365 Business Central, understanding Peppol and Belgium’s e-invoicing requirements is essential for maintaining compliance while improving accounts payable and receivable processes.

What Is Peppol?

Peppol is a decentralized network that enables organizations to exchange standardized electronic business documents securely.

Rather than requiring every business to build a separate connection with every customer or supplier, Peppol uses an interoperable network model. Businesses connect through a Peppol Access Point, allowing them to exchange structured documents with other connected organizations.

Belgium has selected Peppol as the principal network for its structured B2B e-invoicing framework. The Belgian government describes the network as a decentralized infrastructure through which invoicing and accounting software can securely exchange structured invoice data.

In simple terms:

Your ERP → Peppol Access Point → Customer’s Access Point → Customer’s ERP

This means the invoice can move directly from one business system to another without relying on email attachments or manual data entry.

What Is Belgium’s E-Invoicing Requirement?

From 1 January 2026, Belgian VAT-registered businesses generally must issue structured electronic invoices for B2B transactions with other Belgian VAT-registered businesses that fall within the scope of the obligation.

The requirement is important because a conventional PDF invoice is not considered a structured e-invoice.

A structured e-invoice contains standardized data that software can automatically read and process.

Traditional invoicing

ERP → PDF → Email → Customer → Manual entry

Peppol e-invoicing

ERP → Structured invoice → Peppol → Customer ERP

The second approach significantly reduces manual processing and makes invoice data easier to validate and automate.

Who Is Required to Use E-Invoicing in Belgium?

The B2B obligation generally applies to Belgian businesses that are liable for VAT and transact with other Belgian VAT-registered businesses. There are limited exceptions depending on the business and transaction.

Businesses that primarily sell to consumers should note an important distinction:

B2B

Structured e-invoicing is generally mandatory for transactions between Belgian VAT-registered businesses.

B2C

The mandatory B2B structured e-invoice requirement does not generally apply to invoices issued to private consumers.

However, businesses that only invoice consumers may still need to be able to receive structured invoices from their suppliers.

B2G

Belgium also has separate electronic invoicing requirements for transactions with public authorities. For B2G transactions, e-invoicing has been mandatory for contracts published from 1 March 2024, subject to applicable thresholds and exceptions.

What Format Does Belgium Require?

Belgium’s framework uses the Peppol-BIS format as the principal format for structured e-invoices.

Peppol BIS Billing is based on the European EN 16931 standard, which defines the semantic requirements for electronic invoices.

This is important because a structured invoice is not simply a PDF converted into an electronic file.

The invoice needs to contain standardized business information that can be automatically interpreted by accounting and ERP systems.

Typical invoice information includes:

Invoice number
Invoice date
Seller information
Buyer information
VAT information
Invoice currency
Payment information
Invoice lines
Quantities
Prices
Tax amounts
Total amounts
Purchase order or buyer reference where required

Peppol BIS Billing also includes validation rules to ensure that mandatory invoice information and codes are correctly structured.

Is a PDF Invoice Still Valid?

This is one of the most common questions businesses have.

For Belgian B2B transactions covered by the mandate, a PDF invoice sent by email is not sufficient as the required structured electronic invoice from 1 January 2026.

A business may still voluntarily provide a PDF or another human-readable representation, but the structured electronic invoice is the legally required invoice for transactions within the mandate.

In practice, businesses often use a PDF or viewer to make the invoice easy for employees to read while retaining the structured invoice as the official electronic record.

How Does Peppol E-Invoicing Work?

The Peppol network uses a four-corner model.

Corner 1: Supplier

The supplier creates an invoice in its ERP or accounting system.

Corner 2: Supplier’s Access Point

The invoice is transmitted to the supplier’s Peppol Access Point.

Corner 3: Customer’s Access Point

The customer’s Access Point receives the structured invoice.

Corner 4: Customer

The invoice is automatically delivered into the customer’s ERP or accounting system.

Supplier ERP → Supplier Access Point → Customer Access Point → Customer ERP

This model allows different software systems to communicate without requiring businesses to develop individual integrations for every trading partner.

What Is a Peppol ID?

A Peppol participant needs an electronic address that allows the network to identify where documents should be delivered.

However, Belgian businesses generally do not need to manually ask each customer for a Peppol ID. The Belgian government’s e-invoicing guidance specifically states that businesses should not need to request Peppol IDs from their customers.

Your e-invoicing solution or Access Point handles much of this process.

Peppol and Microsoft Dynamics 365 Business Central

For businesses using Microsoft Dynamics 365 Business Central, Peppol can become an integral part of the organization’s invoicing workflow.

A typical process can look like this:

Sales Order

↓

Business Central Invoice

↓

Peppol BIS Billing Validation

↓

Peppol Access Point

↓

Customer’s ERP

↓

Invoice Processing

This allows businesses to automate much of the invoicing lifecycle rather than creating PDFs and emailing them manually.

Belgium’s official guidance recommends that businesses using ERP or accounting software check with their software provider to confirm that the system can send and receive structured e-invoices through Peppol.

Benefits of Peppol E-Invoicing

Compliance is the primary driver, but Peppol can also deliver significant operational benefits.

1. Automated Invoice Processing

Invoices can move directly between business systems, reducing manual data entry.

2. Fewer Data Entry Errors

Structured information reduces errors caused by manually copying invoice data from PDFs or emails.

3. Faster Invoice Processing

Automated delivery can shorten the time between invoice creation, receipt, validation, and posting.

4. Better Accounts Payable Automation

Businesses can integrate invoice receipt with approval workflows and accounting processes.

5. Improved Transparency

Organizations gain better visibility into invoice status and processing.

6. Reduced Administrative Costs

Automation can reduce the time employees spend downloading, entering, checking, and filing invoices.

7. Cross-Border Interoperability

Peppol is designed to support electronic business document exchange across participating countries, making it particularly useful for organizations operating internationally.

What Businesses Need to Do to Become Compliant

Businesses should approach compliance as both a technology and business-process project.

Step 1: Review Your Current ERP

Determine whether your accounting or ERP platform supports structured e-invoicing and Peppol connectivity.

Step 2: Confirm Sending and Receiving Capabilities

Compliance is not only about sending invoices. Your system must also be capable of receiving and processing structured invoices from suppliers.

Step 3: Choose a Peppol-Connected Solution

Your software needs a connection to the Peppol network through an appropriate Access Point or integrated service.

Step 4: Validate Your Master Data

Review:

Customer information
Supplier information
VAT numbers
Addresses
Payment details
Product and service data
Tax configurations

Poor master data can cause invoice validation failures.

Step 5: Test Your Invoice Workflow

Test the complete process from invoice creation through Peppol transmission and receipt.

Step 6: Train Finance Teams

Accounts payable, accounts receivable, finance, and IT teams should understand how structured invoices are created, received, rejected, corrected, and stored.

What About Invoice Storage?

The introduction of structured e-invoicing does not eliminate the need for proper invoice retention.

Belgian guidance states that recipients must retain the structured electronic invoice for the applicable storage period and ensure that the invoice remains readable throughout that period. A PDF or viewer can be used to provide a readable representation.

Businesses should therefore ensure their ERP and document-management processes can retain the original structured invoice as well as an accessible human-readable representation where appropriate.

Common Challenges with Belgium E-Invoicing

Businesses moving to Peppol may encounter several challenges.

Legacy ERP Systems

Older ERP platforms may require upgrades, extensions, or middleware to support Peppol.

Poor Master Data

Incorrect VAT numbers, addresses, customer identifiers, or tax configurations can result in rejected invoices.

Custom Invoice Processes

Highly customized invoicing workflows may need to be redesigned for structured electronic invoicing.

Supplier Readiness

Accounts payable teams need suppliers to send compliant structured invoices.

Integration Complexity

Businesses may need to connect their ERP, accounting system, document management platform, and Peppol Access Point.

User Adoption

Finance teams need training to move from email-based invoice processing to automated workflows.

Peppol Compliance Checklist for Belgian Businesses

Before going live, businesses should check the following:

Belgium E-Invoicing and Business Central: A Strategic Opportunity

For Business Central users, Belgium’s e-invoicing mandate can be viewed as more than a compliance requirement.

It is an opportunity to modernize the entire invoice-to-cash and procure-to-pay process.

Instead of:

Create → Download PDF → Email → Wait → Manually Process

businesses can move toward:

Create → Validate → Send via Peppol → Automatically Receive → Process → Archive

This can help finance departments reduce repetitive work while improving the quality and availability of financial data.

Looking Ahead: E-Invoicing Is Becoming the New Digital Standard

Belgium’s move toward structured e-invoicing is part of a broader European shift toward digital tax and transaction reporting.

For businesses operating across multiple European markets, adopting Peppol-compatible processes can provide a foundation for future regulatory requirements and cross-border digital invoicing.

Peppol BIS Billing continues to evolve, with updated specifications and validation rules maintained by OpenPeppol.

Businesses should therefore avoid treating e-invoicing as a one-time compliance project. Instead, it should be integrated into a broader digital finance strategy.

Conclusion

The Peppol Network and Belgium’s e-invoicing requirements are transforming the way businesses exchange invoices.

Since 1 January 2026, structured electronic invoicing has been mandatory for most in-scope B2B transactions between Belgian VAT-registered businesses. PDF invoices sent by email are no longer sufficient for those transactions.

For businesses using Microsoft Dynamics 365 Business Central, the right implementation can turn this regulatory requirement into an opportunity to automate invoicing, reduce manual processing, improve financial visibility, and prepare for the increasingly digital European business environment.

Ready to Implement Peppol E-Invoicing?

Tech Ventures helps businesses modernize their ERP and finance processes with Microsoft Dynamics 365 Business Central, including e-invoicing and Peppol integration.

Our team can help you assess your current environment, configure your ERP, connect your invoicing processes to the Peppol network, validate invoice data, migrate existing processes, and train your finance teams.

Don’t let e-invoicing compliance become a last-minute challenge.

Contact Tech Ventures today to discuss your Belgium e-invoicing and Peppol requirements and build a compliant, automated, and future-ready invoicing process.

PEPPOL Network and Belgium E-Invoicing Requirements