The study of the problems of management and development of regional budget policy within the state is one of the most important in management and law. The Republic of Tatarstan is considered a specific subject of the Russian Federation in the economic and territorial aspect. At the present stage of development of the Russian Federation, the Republic of Tatarstan has become one of the leading regional centres of investment in the field of science and business, where economic zones and industrial complexes are intensively developing. The object of this study was the budget of the Republic of Tatarstan and its statistical data for the comparison of 2019 and 2020. The purpose of the study was to identify trends in the budget of the Republic of Tatarstan during the COVID-19 pandemic related to budget management. The study concluded that Tatarstan, being a leader in the development of the socio-economic sphere, became one of the leaders in the Russian Federation in the development and implementation of its budget in the period 2015-2020, and also showed no obvious statistical signs of decline. Therefore, the experience of the budget policy of Tatarstan can be used to create algorithms for budget management in a crisis period.