Poland PIT-36/PIT-36L annual return (self-employed)

Poland: PIT-36/PIT-36L annual personal income tax return and payment due by 30 April

Re-verified 2026-09-09: podatki.gov.pl's "Podatek PIT" page confirms "Zeznanie: PIT-36, PIT-36L i PIT-28 - złóż w terminie od 15 lutego do 30 kwietnia roku następującego po roku podatkowym", matching the existing 30 April deadline; /pit/twoj-e-pit/ remains the correct, reachable e-filing service URL.

Järgmine: 30. aprill 2027seejärel 30. aprill 2028, 30. aprill 2029

Self-employed sole traders (JDG) running a business taxed on the general PIT scale or the flat 19% rate; does not apply to sp. z o.o. or other CIT taxpayers, which instead file CIT-8.