This paper summarizes the arguments within the scientific discussion on the issue of reducing municipal waste in municipalities in Slovakia. The aim of the paper is to examine the environmental and economic impacts of waste management in municipalities in Slovakia and to determine the impact of the introduction of a coupon system in the field of municipal waste sorting in municipalities. Methods of research were focused on using statistical indicators for the valuation of municipal waste, cluster analysis, regression analysis, and comparison analysis. The object of research were chosen 8 municipalities in Slovakia that implemented coupon system of waste sorting. The research empirically confirms and theoretically proves that the development trend of municipal and separated waste has a linear progressive course that means increasing of municipal waste and separated waste. The indicator RSquare indicates that the number of inhabitants affects the generation of municipal waste at 67,03%. Defined three clusters can be a tool for the classification of municipalities in the sorting of municipal waste after the implementation of a coupon system. The results of the research can be useful for legislative changes in Waste Law in Slovakia and opportunities for law changes in municipalities in the EU.