🇧🇪 PEPPOL E-Invoicing Belgium 2026

Get Ready for Belgium's Mandatory B2B E-Invoicing

⚠️ Mandatory from January 1, 2026

What is PEPPOL?

PEPPOL (Pan-European Public Procurement On-Line) is the standardized electronic invoicing network that Belgium has chosen for its mandatory B2B e-invoicing system starting January 1, 2026.

All Belgian VAT-registered businesses will be required to send and receive structured electronic invoices using the PEPPOL BIS 3.0 standard in UBL format. This is part of Belgium's implementation of the EU's VAT in the Digital Age (ViDA) initiative.

                Belgium Accounting provides a PEPPOL-ready platform with full API integration capabilities for Odoo ERP, MyMinfin, and other accounting systems—ensuring your business is compliant and ready for 2026.
            

Belgium's 2026 E-Invoicing Mandate

Key Requirements

Effective Date: January 1, 2026
Scope: All B2B transactions between Belgian VAT-registered businesses
Standard: PEPPOL BIS 3.0 in UBL XML format (EN 16931 compliant)
Network: PEPPOL 4-corner model (upgrading to 5-corner in 2028)
Obligation: Both sending AND receiving e-invoices is mandatory

Who Must Comply?

All Belgian businesses registered for VAT purposes
Companies with a fixed establishment in Belgium
Accountants managing client invoicing systems
Businesses using accounting software like Odoo, SAP, or custom systems

⚠️ Non-Compliance Penalties

Failure to have the technical means to issue and receive e-invoices will result in fixed penalties:

First offense: €1,500
Second offense: €3,000
Subsequent offenses: €5,000

What is an API? (Simple Explanation)

Throughout this page, you'll see references to "API integration." If you're not technical, here's what that means in simple terms:

🍽️ An API is like a restaurant waiter:

You (the customer) want food
The kitchen has the food and prepares it
The waiter (API) takes your order to the kitchen and brings back your meal

In accounting software:

Belgium Accounting wants your invoice data
Odoo (or your accounting system) has all your invoices stored
The API is the messenger that automatically fetches invoices from Odoo and delivers them to Belgium Accounting

Why APIs Save You Time: Without an API, you'd manually export invoices from Odoo, download files, and upload them elsewhere—every single day. With an API, Belgium Accounting automatically fetches new invoices from Odoo in the background, without you lifting a finger.

Real Example: Your weather app uses an API to ask a weather service "what's the temperature in Brussels?" and gets an instant answer. It doesn't store all weather data—it just asks for what it needs, when it needs it.

Belgium Accounting: Your PEPPOL Solution

We're software development experts based in Brussels who have built a flexible, affordable PEPPOL-compliant platform specifically for Belgian businesses and accounting firms. With a proven track record delivering diverse web applications and custom software solutions for Belgian enterprises, we bring technical expertise and local market knowledge to solve your 2026 compliance challenges.

                Proven Track Record: Our team has successfully delivered diverse web applications and custom software solutions for various industries. We're not a large, inflexible corporation—we're agile developers who can implement exactly what you need.
            

Our solution integrates seamlessly with your existing workflows and can be customized to your specific requirements.

🔌 Odoo API Integration

Connect to Odoo Community Edition or Enterprise. Automatically retrieve outgoing and incoming invoices from your Odoo ERP system.

📊 MyMinfin API Connection

Direct integration with SPF Finances' MyMinfin system for seamless Belgian tax authority reporting and compliance.

📁 Multi-Format Transfer

Transfer invoices to your server via FTP, WebDAV, or email—organized into client-specific folders automatically.

🌐 PEPPOL Network Access

Full PEPPOL BIS 3.0 compliance with UBL XML format. Send and receive invoices through the official PEPPOL network.

💼 Multi-Company Support

Manage multiple client companies from one platform—perfect for accounting firms like yours.

🔒 Secure & Compliant

Bank-grade encryption, audit trails, and full compliance with Belgian data protection regulations.

Odoo Integration: What We Can Do

Based on your requirements, we can build a complete API solution that:

Retrieves Outgoing Invoices: Automatically pull all client invoices issued through Odoo
Collects Incoming PEPPOL Invoices: Receive supplier invoices from the PEPPOL network
Imports to Odoo (Optional): Automatically import received PEPPOL invoices into your Odoo system
Organizes by Client: Transfer invoices to your server in organized folder structures (one folder per client)
Multi-Format Support: Export as PDF, UBL XML, or both formats
Flexible Transfer Methods: FTP, SFTP, WebDAV, or email delivery

Odoo Deployment Options

Self-Hosted Odoo Community Edition: Completely free API access. We just need your Odoo instance URL/IP and API credentials.

Odoo Online: Requires a paid plan (Custom plan) for API access. We support all Odoo Online tiers with API capabilities.

2028 E-Reporting: Future-Proof Your System

Belgium will introduce mandatory near real-time e-reporting to SPF Finances starting January 1, 2028. This means invoice data will be automatically transmitted to tax authorities using a PEPPOL 5-corner model.

Belgium Accounting is already preparing for 2028 compliance, ensuring you won't need to migrate systems again when e-reporting becomes mandatory.

                What Changes in 2028:
                Upgrade from PEPPOL 4-corner to 5-corner model
Real-time transmission of invoice data to SPF Finances
Replaces annual customer listing reports
Enhanced VAT fraud prevention

            

Why Belgian Accountants Choose Us

Software Experts: We're experienced developers who build custom solutions, not salespeople reselling rigid platforms
Diverse Project Portfolio: Proven success delivering complex web applications for various industries across Belgium
Built for Accountants: Multi-client management, organized folder structures, bulk operations tailored to accounting firm workflows
Flexible & Custom: We implement features you actually need—not bloated enterprise software with features you'll never use
Affordable Pricing: No massive license fees or vendor lock-in. Pay for what you use.
Local Expertise: Brussels-based team that understands Belgian accounting requirements, SPF Finances systems, and local business needs
API-First Design: Integrate with any system—Odoo, Exact, Winbooks, custom ERP solutions—we build the connectors you need
Multi-Language: Full support for Dutch, French, English, and German
Rapid Development: As a lean development team, we can build and deploy features in weeks, not months

Let's Get You PEPPOL-Ready

We're currently onboarding early clients for 2026 compliance. As expert software developers with a diverse portfolio of successful projects, we can build a custom integration solution tailored to your accounting firm's exact needs.

Contact Daniel and Marta from our development team to discuss your specific Odoo integration, PEPPOL compliance, and accounting automation requirements.

Frequently Asked Questions

Do I need PEPPOL if I use Odoo?

Yes. Even if you use Odoo for accounting, you still need a PEPPOL access point to send and receive e-invoices through the official Belgian network. We provide that connection.

Can you integrate with Odoo Community Edition?

Absolutely. Odoo Community Edition has full API access with no restrictions. We can connect to any self-hosted Odoo instance.

What about Odoo Online's free tier?

Unfortunately, Odoo Online's free tier does not provide API access. You would need Odoo's Custom plan (paid) or use self-hosted Community Edition.

How does invoice transfer to my server work?

We can automatically transfer invoices via FTP, SFTP, WebDAV, or email. Invoices are organized into client-specific folders (e.g., /ClientA/2026/Q1/invoice001.pdf).

Is MyMinfin API integration included?

Yes. We already have MyMinfin API access and can integrate your invoicing data with SPF Finances systems.

What invoice formats do you support?

We support PEPPOL UBL XML (mandatory), PDF (for archiving), and can export to other formats upon request.

Can I manage multiple companies?

Yes! Our platform is designed for accounting firms managing multiple client companies. Each company has its own secure dashboard.

What happens if I don't comply by 2026?

You will face financial penalties (€1,500 to €5,000) and may be unable to legally invoice other Belgian businesses.