Slovakia's national 5-corner Peppol infrastructure runs in production ahead of the January 2027 mandate
Slovakia's Financial Administration confirmed that its national e-invoicing and e-reporting infrastructure is fully operational in production, with roughly 5,000 companies already exchanging documents voluntarily — an unusually early state of readiness among EU mandate countries. The model was presented at the Peppol Conference Europe in Brussels on 24 June 2026 and recognised by the European Commission and OpenPeppol. The architecture rests on four pillars: the national IS EFA platform, Peppol as the interoperability network, EN 16931 as the semantic standard, and e-reporting to the tax administration. Mandatory domestic B2B and B2G e-invoicing starts 1 January 2027, followed by a transitional period. Slovakia's early production posture makes it a useful pilot jurisdiction for groups sequencing a multi-country ViDA rollout.