Belgium’s Move to Mandatory B2B E-Invoicing: What Businesses Need to Know?

Belgium has entered a new phase of VAT digitalisation with mandatory structured B2B e-invoicing effective from January 1, 2026, replacing paper and PDF invoices for domestic transactions. To support implementation, the tax authorities have introduced a three-month tolerance period until March 31, 2026, during which penalties are eased for businesses that can demonstrate timely and genuine efforts to comply, although the legal obligation itself is already in force.