The 2026 European E-Invoicing Mandate Crisis: How Supply Chain Companies Must Rebuild EDI and TMS Integration Architecture to Survive Cross-Border Compliance Requirements
Poland's mandatory B2B e-invoicing via KSeF starts February 1, 2026 for large firms (annual revenues exceeding PLN 200 million), with smaller firms following April 1, 2026. Belgium implements mandatory PEPPOL-based B2B e-invoicing from January 1, 2026. France begins its phased rollout September 1, 2026 for large and mid-sized