2026-06-29 ZEFIR2 - difficulties in submitting tax declarations and applications on June 30, 2026.

Published: 29.06.2026 10:31 (Warsaw time)

Updated: 01.07.2026 10:06 (Warsaw time)

Due to scheduled maintenance, all services of the ZEFIR2 system will be unavailable for submitting tax declarations and applications on June 30, 2026, from 19:00 to 23:00. This affects various taxes including excise, gaming, and VAT.

Unavailability starts on June 30, 2026, at 19:00.
Unavailability ends on June 30, 2026, at 23:00.
Services affected include excise tax declarations and applications.
Updates will be provided if there are changes to the downtime.

View original on PUESC

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