Regionalne zróżnicowanie szarej strefy w Polsce - potencjalny wpływ na rozwój

The aim of the article was to measure the level of the shadow economy in the regions of Poland. The MIMIC (Multiple Indicators Multiple Causes) approach was applied. The fi ndings show substantial differences of shadow economy in Polish regions. The highest level of shadow economy in 2016 was identifi ed in Świętokrzyskie (32% of local GDP) while the lowest one was observed in Kujawsko-Pomorskie and Wielkopolskie (23% of regional GDP). The regional differentiation in Poland is quite big economic problem which may harm further economic development. The different efforts that have been implemented did not reduce the dissimilarities. The shadow economy seems to be important structural barrier hammering economic development in Polish regions