Electronic Invoicing in Belgium: Obligations and 2026 Timeline

Electronic Invoicing: What Are We Talking About?
Electronic invoicing (e-invoicing) doesn't simply mean sending a PDF by email. It involves an automated exchange of structured data between the sender's and recipient's IT systems, in a standardized format.
What Changes
| Before | After |
|---|---|
| Paper or PDF invoice | Structured invoice (XML) |
| Sent by mail or email | Transmitted via Peppol network |
| Manual encoding at client | Automatic integration |
| Physical archiving | Certified digital archiving |
The Legal Framework in Belgium
The Law of 6 February 2024
Belgium adopted the B2B electronic invoicing obligation with a progressive timeline:
| Date | Obligation |
|---|---|
| 1 January 2026 | Obligation to receive structured electronic invoices |
| 1 January 2026 | Obligation to issue structured electronic invoices |
Who Is Affected?
All VAT-registered businesses in Belgium for their domestic B2B transactions:
- Companies (SRL, SA, SC, etc.)
- Self-employed individuals
- VAT-registered non-profits (ASBL)
- Belgian branches of foreign companies
Exemptions
- B2C transactions (to individual consumers)
- Exports and intra-Community supplies (specific regime)
- Flat-rate schemes (small businesses below threshold)
- Exempt real estate transactions
The Peppol Standard
What Is Peppol?
Peppol (Pan-European Public Procurement OnLine) is the network and standard chosen by Belgium for electronic invoicing. It ensures interoperability between all accounting software.
How Does It Work?
Peppol Advantages
- Standardization: one format for all businesses
- Interoperability: works between all compatible software
- Security: encrypted and authenticated transmission
- Traceability: automatic delivery receipts
- International: used across Europe
How to Prepare?
Step 1: Check Your Accounting Software
Major Belgian Peppol-compatible software:
- Exact Online: compatible
- Octopus: compatible
- Yuki: compatible
- Billit: compatible
- Horus: compatible
- Bob50/Sage BOB: update needed
- WinBooks: compatible
Step 2: Register on the Peppol Network
- Obtain a Peppol identifier (based on your CBE number)
- Configure your Access Point (via your software or a provider)
- Test sending and receiving test invoices
Step 3: Adapt Your Processes
- Train your staff on the new procedure
- Update your general terms and conditions
- Inform your clients and suppliers
- Plan a transition period (dual sending)
Step 4: Digital Archiving
Electronic invoices must be kept for 10 years in their original format (no paper printout):
- Guaranteed integrity (no modification possible)
- Ensured readability throughout the retention period
- Accessibility for tax audits
Benefits for Your Business
Financial Gains
- Cost reduction: up to 60-80% savings per invoice
- No printing, no postal sending
- Reduced encoding errors
- Faster payment cycles
Operational Gains
- Automation: no more manual encoding
- Speed: instant receipt
- Reliability: fewer errors, fewer disputes
- Visibility: real-time invoice tracking
Savings Estimate
| Monthly Volume | Estimated Annual Savings |
|---|---|
| 50 invoices/month | €3,000 - €5,000 |
| 200 invoices/month | €12,000 - €20,000 |
| 500 invoices/month | €30,000 - €50,000 |
Penalties for Non-Compliance
The FPS Finance provides for progressive penalties:
- Warning initially
- Administrative fine: possibility of proportional fines
- VAT deduction refusal: if the invoice is not in the required format
- Enhanced tax audit: increased risk of verification
Conclusion
Need help complying with electronic invoicing? LegalBelgique supports you through the transition: software selection, Peppol registration, team training, and accounting process compliance.
Need guidance?
Our experts are available to guide you through your legal and administrative procedures in Belgium.
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