The article examines the decentralized finances of some organizations that are an independent part of the financial system of the Russian Federation. The question of their place in the system of the branch of financial law is analyzed. Based on the study of the works of a number of well-known scientists of Soviet as well as Russian financial law, it is concluded that the idea of separating the finances of some organizations into an independent legal institution was put forward during the Soviet period. Such an independent institute of the branch of financial law was the Institute of Finance of state-owned enterprises (associations) and branches of the national economy. At the present stage, these ideas are expanding due to the justification of the include new legal institutions in the system of financial law, for example, organizations such as state corporations, public law companies, state and municipal institutions.