This study is devoted to the legal transformations of municipal authorities following the adoption of the 2020 constitutional reform and the implementation of municipal reform through the adoption of a new law on local self government. The author defines the essence and purpose of the unified system of public authority, examines the new triad of powers of local self government bodies, and the legal mechanism for their redistribution between levels of public authority. It has been revealed that certain provisions of the new legislative regulation may unjustifiably impose additional obligations on municipal entities, and at the same time, there are inaccuracies in the issue of delineating responsibility.