Slovakia has taken a significant step towards enhancing its invoicing process by introducing the Slovakian Electronic Invoice Information System (IS EFA). This IT and communication solution, launched in January 2022, allows companies to send electronic invoices to public administrations in the country. While electronic invoicing is currently voluntary, it will become mandatory for all B2G transactions from April 1st 2023. The dates for mandatory B2B e-invoicing have not yet been set but are expected to be published soon
Source: www.fiscal-requirements.com