Professional secrecy and Peppol: How Law firms can prepare for 2026

The legal world is about to face one of its biggest administrative changes in decades. From January 1, 2026, all VAT-registered businesses in Belgium, including law firms, will be required to send and receive B2B invoices electronically via the Peppol network. For most sectors, this shift is a matter of compliance and efficiency. For lawyers, however, it touches something much deeper: professional secrecy. Because when your work is built on confidentiality, even an invoice deserves careful thought.