Poland’s economy is 42% larger today than it would have been had the country not joined the European Union in 2004, according to new research from the Polish Economic Institute (PIE).
The public think tank reached this conclusion after running roughly 400 simulations of a hypothetical Poland that never entered the bloc. Researchers measured real GDP per capita in constant U.S. dollars to assess the country's economic trajectory through 2024.
The cost of potential exit
While the average gain stands at 42%, the institute’s worst-case models still show a 22% increase in economic size attributed to EU membership. Analysts noted that the findings represent a systematic economic effect rather than statistical noise.
“Our estimate of the gains from joining the EU stems largely from the benefits of joining the European single market, which facilitated trade, international investment, and improvements in institutional quality,” PIE analysts wrote in the report.
The release of this data comes as political rhetoric regarding a potential "Polexit" gathers momentum. Recent polling indicates that up to 25% of the Polish public now supports leaving the EU, a significant increase from previous years.
Government officials have labeled this trend a major risk. Prime Minister Donald Tusk recently described the prospect of leaving the bloc as a “catastrophe” for the nation.
“Polexit is a real threat today,” Tusk wrote on social media last month. “I will do everything to stop them.”
Opposition parties, including the national-conservative Law and Justice (PiS), have denied calling for an exit, though they frequently clash with Brussels over climate and social policies. The far-right Confederation party remains more openly eurosceptic, with factions within its orbit advocating for full withdrawal.
Despite the political friction, Poland has maintained a strong economic performance. The country was the only EU member to avoid recession during the 2007–2009 financial crisis and has continued to narrow the wealth gap with more established EU economies. As of 2025, Poland’s GDP per capita reached 81% of the EU average, the closest it has ever been to the bloc’s benchmark.
Poland’s economy surpassed $1 trillion for the first time last year, officially joining the world’s 20 largest economies. Since its accession in 2004, the country has also been a major beneficiary of European funding, receiving a net total of approximately €160 billion to support infrastructure and development.
