Full-time EU students and students holding the Card of the Pole (Karta Polaka) do not have to pay tuition fees at public higher education institutions in Poland if the study program is conducted in Polish.
For some programs taught in a foreign language, tuition fees may apply. Non-EU students and part-time students have to pay tuition fees. In this case, the amount of the fees is set by each institution. In general, tuition fees for first and second cycle degrees (bachelor's and master's degrees) start at the equivalent to 2000 EUR per year.
Please, contact your institution in Poland to learn what situation applies to your case and the exact amount of tuition fees you have to pay.
Source: Eurydice database (Eurydice is an international educational database developed by the European Commission and Member States of the European Union with the aim of facilitating and improving the understanding of the different educational systems in Europe).