Relevance and goals. Tax benefits and preferences are not mandatory, but an important element of tax regulation of socio-economic processes. On the one hand, the availability of tax benefits are associated with obtaining economic benefits for economic entities and, on the other hand, the appearance of additional tax expenditures of the state budget associated with their introduction. The relevance of the study was the need to determine the methodology of tax expenditures and the analysis of existing methods for assessing their effectiveness. The purpose of the study was to study the regulatory framework, implementation and effectiveness of tax benefits and preferences in accordance with the legislation of the Sverdlovsk region. In accordance with this goal, the following tasks were solved: the concepts of tax expenditures (benefits) were studied, the role of tax benefits and exemptions in the system of regional tax policy of the Sverdlovsk region was determined, the methodology for assessing the effectiveness of tax benefits was analyzed. The methodology of the article includes General scientific research methods, methods of system analysis and synthesis, methods of statistical data analysis. Results. On the basis of systematization and analysis of budget efficiency of tax benefits and preferences, the shortcomings and advantages of the existing methodology were revealed. Conclusions: based on the results obtained, conclusions are drawn about the relevance of improving the methodology for assessing the effectiveness of tax benefits and exemptions in the Sverdlovsk region and to conduct a balanced tax policy.