The Czech Statistical Office has updated the “Classification of Economic Activities (CZ-NACE)” based on an EU Commission regulation, and the changes valid from 1 January 2025 have been incorporated into the Register of Economic Entities (RES) with effect from 1 January 2026. During a transitional period, the register will display both the new and the old codes. Detailed information is available on the Czech Statistical Office’s website dedicated to the CZ-NACE classification valid from 1 January 2025.
The new CZ-NACE code list has also been implemented, effective from 1 January 2026, into the information systems and applications of the Czech Financial Administration, especially into the Online Tax Office – Tax Information Box Plus (DIS+) and the Electronic Submissions for the Financial Administration (EPO) application on the „My Taxes“ portal.
In connection with this change, users are reminded that when entering information about their economic activity in tax returns or any other communication with the Financial Administration, they must use the new (current) CZ-NACE code — even if the submission relates to a period before 1 January 2026.
