2026-04-15 ZEFIR2 - difficulties in submitting tax declarations and applications on April 16, 2026.

Published: 15.04.2026 15:44 (Warsaw time)

Updated: 17.04.2026 10:51 (Warsaw time)

Due to scheduled maintenance, all services of the ZEFIR2 system will be unavailable for submitting tax declarations starting from April 16, 2026, at 19:00 until 23:00 on the same day. This affects various tax declarations and requests related to excise duties.

Services affected include excise tax, gaming tax, and VAT-14.
Unavailability starts on April 16, 2026, at 19:00.
Expected end of unavailability is April 16, 2026, at 23:00.
Updates will be provided if there are changes to the expected downtime.

View original on PUESC

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