Insurance premium tax is a novelty in the conditions of the Slovak Republic. However, the arguments of the professional public and the nature of the insurance tax show that its introduction may have a negative impact on the demand for insurance. Due to the low indicators of insurance of population in the Slovak Republic, this phenomenon is undesirable. The main aim of the bachelor thesis is to verify the impact of insurance tax on insurance demand in selected countries. We research the goal by testing hypothesis H: Insurance premium tax reduces insurance demand. The work is divided into three chapters. In the first chapter, for a better understanding of the issue and reason for insurance taxation, the work deals with the characterization of indirect selective taxes and their important functions, which affect consumers. Furthermore, the chapter summarizes the substantial arguments of relevant entities against the implementation of the insurance tax in the conditions of the Slovak Republic, and an overview of the functioning of this tax across the countries of the European Union. The content of the analytical part of the work is the description of the functioning of the insurance tax and its impact on the insurance of the population of the United Kingdom of Great Britain and Northern Ireland and the Slovak Republic. Researching the countries, the requirements and functioning of the insurance premium tax in individual countries, the development of the tax from the beginning of its validity to the present, together with the reasons for its introduction are mentioned. The work also deals with an overview of fiscal revenues of the insurance premium tax for better verification of the hypothesis. The main goal in the compared economies is monitored by indicators of insurance density and gross written premium. The end of the chapter contains a comparison of common and different features of the function of the insurance premium tax and its impact on the insurance market in the monitored countries.