WARSAW, Oct 1 (Reuters) - Polish President Karol Nawrocki said on Thursday evening he signed a windfall tax bill, which will be imposed on energy companies.

• The Polish parliament approved the bill to tax windfall profits generated by oil and gas companies which have benefited from surging margins amid supply shocks due to the Middle East war

• The bill assumes that 2026 revenues on sales of fuels exceeding the previous year average by 20% would be taxed at 60%

• Prime Minister Donald Tusk said that if the bill becomes law, he would use the proceeds to lower fuel prices at the pump

• Finance Minister Andrzej Domanski said that the legislation would be published on Friday and that fuel prices at service stations would drop by 1.2–1.3 zlotys ($0.3086-$0.3344) per liter as early as the weekend

• He added on X that he would like the lower-price programme to remain in place "at least until the end of this year"

• Nawrocki referred a previous version of the bill to the country's constitutional court, pointing to concerns about its retroactive nature and potential effect on consumers

($1 = 3.8881 zlotys)

(Reporting by Anna Wlodarczak-Semczuk and Alan Charlish; Additional reporting by Pawel Florkiewicz; Editing by Jacqueline Wong)

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