The current state of financial law is primarily defined by its subject matter. In contemporary conditions, the subject of financial law has evolved significantly, driven by the active development of its structure and, most notably, the emergence of new financial and legal institutions within decentralized finance. These institutions include state and municipal unitary enterprises, state and municipal institutions, state corporations, and public law companies. The growth of decentralized finance has been a prominent trend in the modern era, with considerable potential for further expansion. Financial and legal regulations, in general, serve to safeguard the public interests of the state and municipalities. However, it is important to acknowledge that, with the expansion of decentralized finance, the subject of financial law, considered the most fundamental indicator of the current state of this legal branch, should be understood not only in terms of the financial activities of the state and municipalities but also concerning the financial activities of entities, including non-state actors, that are tasked with executing public functions.