Gdynia
Drugi Urząd Skarbowy w Gdyni
ul. Hutnicza 25, 81-061 Gdynia
Look up your address in the Gdynia street list before going, since the two tax offices split some streets.
Choose the certificate and period. Submit through e-US/eUS, e-Doręczenia (Poland’s electronic delivery system) or signed paper in person/by post. e-US/eUS certificates are free; the standard income/residence-certificate stamp duty through paper/e-Doręczenia is PLN 17, subject to exemptions. Keep payment proof when needed. The seven-day procedure can end in a certificate or a decision, including refusal.