The strategy of economic security of the Russian Federation for the period up to 2030 defines various directions of ensuring economic security, one of which is to improve the activities of control bodies, including the Federal Treasury, which, in turn, is carried out through the application of various measures, in particular, information, which includes the creation and organization of information systems aimed at automating control activities. The presented research is devoted directly to the analysis of the legal regulation of these information systems. The article discusses the legal foundations of the organization and functioning of information systems specified in the Letter of the Ministry of Finance of the Russian Federation No. 02-10-07/74315, namely the GIS of public Finance management “Electronic Budget”, GIS “Official website of the Russian Federation in the information and telecommunications network “Internet” for posting information on the implementation of state (municipal) financial audit (control) in the field of budgetary legal relations” and GIS “Unified Information System in the field of procurement”. In addition, a study of the legal regulation of systems not mentioned by the Ministry of Finance of the Russian Federation among those contributing to the conduct of state financial control is presented — an automated system for planning control and supervisory activities of the Federal Service for Financial and Budgetary Supervision in executable modules and GIS “Standard cloud solution for automation of control (supervisory) activities”. The impossibility of using the second of these systems when carrying out state financial control measures has been established. In conclusion, the specific directions of the use of the considered information systems in carrying out control measures by the Treasury of Russia are presented.