This thesis is focused on the implementation of the reverse charge mechanism on supplies of electricity and gas, which was imposed on these goods on 1st February 2016. The main aim of the thesis is to determine whether carousel frauds in our territory disappeared after the introduction of the reverse charge mechanism and to attempt to estimate the amount of tax evasion before the implementation. The other topics in the thesis include a description of principles of carousel frauds and measures adopted in order to eliminate them as well as an evaluation of the contemporary level of implementation of this mechanism in the Czech Republic and other EU countries. The analysis of foreign trade statistics has indicated a significant decrease in the...