Tax sovereignty is now an expression of the phenomenon of state power. In general, there is a widespread but also accepted view that a citizen is dependent on the state and the state is dependent on tax resources. The social status of a citizen in the state is of great importance; it affects the development of personality and, last but not least, reflects the degree of democracy acquired in a particular state. Various tax law measures for the benefit of the citizen are important for the identification of social behavior and are an attempt to improve certain ways of life. The aim and ambition of this article is to emphasize the tools of social policy (e.g., minimum wage, subsistence minimum, social right to work) that are related to the social function of taxing income. In this context, the authors deal with a social function of tax collection and imposing of taxes, justice in taxation, and point out social aspects of the system of taxes in the Slovak Republic. In this article, the authors present the attitudes of both critics and proponents. It also deals with tax justice, which is often a category subjective to the evaluator. The benchmarking attribute of tax collection should be that citizens will have the certainty of social justice in the state and will therefore pay attention to the minimum wage and subsistence minimum as an integral part of tax policy under the legal conditions of the Slovak Republic. All tax legislation, especially tax reform, is perceived with a certain sensitivity regarding tax subjects.