Mandatory E‑Invoicing in 2026: Which Countries Are Affected

Mandatory E‑Invoicing in 2026: What You Need to Know

From 1 January 2026, all B2B invoices in Belgium must be sent via Peppol e-invoicing. While this directly affects Belgian companies, foreign businesses-like Dutch or other EU companies-will also encounter these requirements when trading with Belgian partners.

E-invoicing means sending invoices in a structured, digital format that accounting software can process automatically. This reduces manual entry, errors, and administrative costs.

Why E-Invoicing Is Becoming Mandatory

The Belgian government is adopting e-invoicing to improve:

• Efficiency: Faster invoice processing and payments
• Security: Reduced fraud via Peppol's secure network
• Cost savings: Less manual work and fewer errors
• Other European countries are also moving toward mandatory e-invoicing, aligning with EU digital invoicing standards.

Which Countries Are Affected in 2026?

Here's an overview of major developments:

• Belgium Mandatory B2B e-invoicing via Peppol from 1 January 2026
• France Phased e-invoicing requirement from September 2026 for large companies, and September 2027 for smaller businesses
• Poland Mandatory e-invoicing through KSeF in stages:
• February 2026: large taxpayers
• April 2026: all businesses
• January 2027: small taxpayers Other EU countries are also preparing e-invoicing mandates. The trend is clear: digital invoices are becoming the standard.

What Does This Mean for Your Company?

Even if your company is not based in Belgium, you may need to issue e-invoices if your Belgian partners require them. Switching now ensures you are prepared for cross-border compliance and future-proof operations.

How to Transition to E-Invoicing

E-invoicing portals: Quick solution for smaller businesses Software integrations: Connect your accounting software for direct invoice exchange Full automation: For larger organisations, fully automated invoice processing minimizes manual work

want to know more?

Is your software package or organisation ready for the future of e-invoicing? Contact the smartest solution for worry-free e-invoicing! contact form and discover how we can support your organisation. Send an email to info@econnect.eu or call us at 088-4406633.