Jaroslaw Kaczynski, the leader of Poland's ruling conservative Law and Justice (PiS) party, on Thursday presented a report looking into the financial damages caused by Germany's invasion and occupation in World War II, DW reports.
Kaczynski said a parliamentary committee found the losses amounted to 6.2 trillion zlotys (roughly $1.32 trillion or €1.32 trillion) and added that Poland would officially demand reparations.
The sum, which represents around one-third of Germany's present-day GDP and around one-sixth of global GDP during the war itself, is higher than previous estimates of around €850 billion from members of the nationalist PiS party.
"The sum that was presented was adopted using the most limited, conservative method, it would be possible to increase it," Kaczynski said in Warsaw.
Prime Minister Mateusz Morawiecki also attended Thursday's ceremonial release of the report at the Royal Castle in Warsaw, rebuilt from wartime ruins.
Polish opposition leader and former Prime Minister Donald Tusk said earlier on Thursday that in his view, the government was not really concerned with reparations from Germany, but was trying to drum up support domestically.
"PiS leader Jaroslaw Kaczynski makes no secret of the fact that he wants to build up support for the ruling party with this anti-German campaign," Tusk said.