If you do not submit the tax return yourself and do not reject it in the Your e-PIT service, the prepared tax return will be automatically accepted on 30 April. If it turns out that the return needs to be corrected, you can do so even after 30 April, either in the Your e-PIT service or by other means.
Note: PIT-28, PIT-36, and PIT-36L returns are not automatically accepted.