The article is focused on financing of Polish support to displaced persons arriving to Poland from Ukraine after 24 February 2022, so after the Russian invasion on Ukraine. Poland has introduced a new statute and has amended general rules applicable in mass influx situations. That area of law is regulated also by Directive 2001/55/EC which establishes a minimum standard of displaced persons’ rights, leaving their financing primarily to national budgets. The Council Implementing Decision (EU) 2022/382 is the first law which has activated the Directive. Under the amended Polish law, support to persons from Ukraine is subject to the avail-ability of national financial resources, which contradicts the principles of public finance law because Polish law does not establish predictable sources of financing, and spendings are not controlled by the Polish Parliament.