The Czech Financial Administration published the first technical documentation for EET 2.0 on June 5, 2026, opening the development window for suppliers and developers of cash register systems ahead of a mandatory February 2027 go-live. The publication marks the first formal milestone in a seven-month technical preparation schedule that runs through to live operation.
The documentation covers basic technical specifications and integration requirements for EET 2.0 compatibility. Further methodological guidance will follow in line with the legislative process, with all materials consolidated at eet.gov.cz.
Timeline
June 23, 2026 — Technical seminar for POS system developers in Prague. Registration deadline June 17 via seminareet2@fs.gov.cz
July 1, 2026 — Playground testing environment opens for developers, covering the revenue side of sales records
November 1, 2026 — EET 2.0 functions available in the Tax Information Box Plus on the MOJE Daně portal, including cash certificate generation
December 1, 2026 — Launch of MOJE EET, a simplified sales recording application for smaller businesses
January 1, 2027 — Normal system operation begins, with a pilot running through the month
February 1, 2027 — Full live operation
The Financial Administration said the early publication was deliberate, intended to give developers and entrepreneurs time to plan, test, and implement without last-minute complications.
