In view of the growing interest of foreign investors in investments in Poland, especially since Poland’s accession to the European Union, this article analyzes the profitability of the transformation of the perpetual usufruct law into the right of property at various times in the duration of this right, on the basis of the empirical formula presented in Polish law (the legal act) – The Ordinance of the Council of Ministers on the valuation of real estate and the estimated cadastre survey. It was analysed how the fee for the transformation of the perpetual usufruct law into the right of property changes depending on the assumed rate of capitalization, interest rate on the annual fee, the number of years in the unused period of usufruct.