New Belgian Royal Decree Confirms E-Invoicing Standards, Penalties, and VAT Rounding Rules

Belgium’s Royal Decree of 14 July 2025 confirms that from 1 January 2026, structured e-invoicing via the Peppol BIS standard will be mandatory for all domestic B2B transactions between Belgian VAT-registered entities, with limited exemptions. The Decree sets technical requirements, allows alternative EU-compliant formats by mutual agreement, and introduces fines ranging from €1,500 to €5,000 for non-compliance, while also changing VAT rounding rules to permit rounding only on the total VAT amount.