The article addresses issues concerning the level of income inequalities in the countries of the European Union in 2010 and 2018. Subject literature and secondary Eurostat data were used in order to achieve the aim of the study. The obtained results confirmed the presence of a large variability in the level of income inequalities between countries of the European Union. Bulgaria and Lithuania were the countries characterized by the biggest income inequalities. The smallest income disproportions, independent of the interference of the state, occurred in the Czech Republic, Slovakia and Slovenia. In addition, in 2018, a relatively large drop in inequality in Poland, as well as an increase in inequality in Luxembourg, Sweden and the Netherland...