Slovakia has confirmed a three-month penalty waiver at the launch of its mandatory e-invoicing system, scheduled for 1 January 2027. Businesses that fail to comply with the new requirements during this transitional window will not face immediate financial sanctions — providing additional time to complete technical integration without the risk of penalties.
The announcement follows the publication of Slovakia's e-invoicing legislation in December 2025 and the opening of voluntary e-invoicing from May 2026. It is consistent with a broader pattern seen across European markets, where regulators have introduced soft-landing periods to facilitate smoother adoption — similar to Poland's 11-month penalty-free period under KSeF.
The waiver applies to penalties only. The mandatory e-invoicing obligation remains in force from 1 January 2027 for the first wave of businesses, with full rollout extending to all remaining entities by 1 July 2027. All B2B and B2G transactions must be transmitted in XML format via certified Peppol-based intermediaries — referred to in the Slovak framework as "Digital Postmen" — with simultaneous near-real-time reporting to the Financial Administration.
Non-VAT-registered entities are not required to issue e-invoices but must be capable of receiving them through a certified service provider. Every e-invoice must be archived in its original XML format for a period of 10 years.
In a separate but related development, Slovakia is also planning to remove certain invoice reporting requirements until July 2030. This signals a more gradual approach to the broader digital reporting roadmap, giving businesses and the Financial Administration additional time to build out the infrastructure required for full compliance with EU-wide ViDA standards.
The three-month waiver softens the launch — it does not postpone it. Businesses that use this period as an extension of their preparation time rather than a reason to delay integration will be in a significantly stronger position when penalties do come into force.
Key actions for businesses operating in Slovakia or with Slovak trading partners:
Onboard with a certified ASP. The Slovak Financial Administration publishes and regularly updates a list of accredited service providers on the Peppol network. Selecting and integrating with a provider is the critical path item for any implementation.
Test during the voluntary phase. Voluntary e-invoicing has been live since May 2026 and invoices issued through the system are already valid tax documents. The pilot window is the lowest-risk environment for integration testing.
Review contracts for advance payment and retention clauses. Businesses in construction, professional services, and project-based industries should ensure their invoicing processes align with the requirement to issue a tax invoice upon receipt of any advance payment.
Assess archiving arrangements. Electronic invoices must be retained in original XML format for 10 years. Businesses using cloud infrastructure should verify that their storage arrangements meet the integrity and access standards required by the Financial Administration.