Slovakia Looks Ready for January E-Invoicing Mandate

Slovakia is looking increasingly ready for its 1st January 2027 e-invoicing mandate.

With four months still to go, the infrastructure is operational, thousands of businesses have selected providers and real e-invoices are already being exchanged.

From January, VAT-registered businesses will be required to issue, send and receive structured e-invoices for specified domestic transactions. Slovakia is using a Peppol-based decentralised model, with certified service providers – known locally as “digital postmen” – connecting businesses and supporting the reporting of invoice data to the Slovak Financial Administration.

Four developments in the last two weeks point to strong progress:

• Infrastructure is live: On 21st August, the Financial Administration confirmed that the infrastructure for automated transmission of tax data from e-invoices was complete and operational
• 5,000+ businesses have selected providers: Companies and organisations across banking, retail, food, healthcare, municipalities and other sectors have already chosen their digital postman. Some are already exchanging real e-invoices
• Technical guidance is getting more detailed: An 28th August update provided further implementation guidance, including clarification around Peppol VAT Category Codes and VAT Exemption Reason Codes (VATEX)
• Business engagement is high: More than half of the 1,900 places across seven September eFaktúra conferences were booked within a week, with several events subsequently reaching capacity
• The 5,000 figure is particularly important. It means Slovakia isn't heading into January with a newly switched-on network and theoretical testing.

Businesses, providers and the tax authority have four months of real transactions to find problems before mandatory volumes arrive.

The mandate goes live on 1st January 2027. Parts of the ecosystem are already live today.