The main purpose of the article is to model the stages of reforming the public management of financial and economic security in Ukraine in the context of European integration, taking into account the basic legal principles. The object of the research is the financial and economic security management system. The importance of forming a modern model of the stages of reforming the public management of financial and economic security in Ukraine in the context of European integration, taking into account the basic legal principles, is proved. The methodology implies the use of modern functional modeling techniques. Based on the results of the study, the main diagrams for achieving the goal were presented. The main scientific novelty is the application of a methodological approach to the development of legal aspects of reforming the public management of financial and economic security in Ukraine in the context of European integration. This is presented as a basic graphical decomposition. The results obtained are presented in the form of a modern model, formed as a decomposition of the stages of reforming the public management of financial and economic security in Ukraine in the context of European integration, taking into account the basic legal foundations. The study is limited by analyzing the specifics of reforming the public management of financial and economic security only for Ukraine. Further research should be devoted to the analysis of new international experience in reforming.

The main purpose of the article is a feature of the features of the legal support of the financial activity of socio-economic systems. The object of the study is the financial activity of socio-economic systems. The structure of the article provides for consistent actions through a review of scientific and practical literature, a presentation of the research methodology, a description of the results obtained and the conclusions drawn from them. It is proved that the successful functioning of the financial activity of the socio-economic system depends primarily on its legal support. It has been established that the main purpose of the financial department of such socio-economic systems as enterprises is to determine the needs of the enterprise for financial resources and the amounts necessary to fulfil the economic development plan of the enterprise; search for reserves to increase profitability; Increasing the profitability of activities The research methodology involves the use of methods of analysis and synthesis with a combination of the methodology of the hierarchical ordering of the main legal factors that affect the financial activities of socio-economic systems. The importance of analyzing the features of the legal support of the financial activity of socio-economic systems is proved. As a result of the study, a hierarchical ordering of the main legal factors that have a significant impact on the financial activities of socio-economic systems was presented. The study is limited by ignoring other components of the economic activity of socio-economic systems. Subsequent studies should be devoted to the study of the legal support of the information activity of socio-economic systems.