Complete guide to Belgian tax identifiers — Numéro National (NN), Ondernemingsnummer (KBO/BCE), and BTW/TVA number format with mod-97 checksum, BIS number for non-residents, and 2026 e-invoicing mandate.
Belgium's mandatory B2B e-invoicing explained — structured electronic invoices via the Peppol network required between Belgian VAT-liable businesses since 1 January 2026, with the legal basis, scope and exclusions, Peppol BIS format rules, penalties, the 120% SME software deduction, and the proposed 2028 near-real-time e-reporting.
Find out how to verify Enterprise Number in Belgium. Use Lookuptax for hassle-free validation of Enterprise Number in Belgium.
How to verify a Belgian VAT number using the EU VIES portal and CBE Public Search. Covers Belgian VAT format, small enterprise exemption, VAT grouping, and invoice requirements.