The subject of the research is the institution of monitoring in the financial sector. The purpose of the work is to analyze the legal regulation and practice of implementing monitoring in the financial sector and to highlight, based on the analysis, significant administrative and procedural trends in its development. On the basis of combining the categories of tax and customs monitoring, the author singles out the category of monitoring in the financial sector. Based on the analysis of the legal regulation of monitoring in the financial sector in the modern period, the correlation of monitoring with audit and evaluation in the financial sector is highlighted, the connection of monitoring with the processes of digitalization of financial control is substantiated, and administrative and procedural trends in its regulation are indicated. A dedicated monitoring institution in the financial sector is positioned as an instrument of financial control. At the same time, a comparison of the areas of monitoring use allows us to determine that tax monitoring is enshrined in tax legislation as a form of control, and customs monitoring is regulated at the sub-legal level and is still carried out in an experimental mode. The connection of monitoring in the financial sector with audit, assessment and self-assessment is indicated. The conclusion is made about the digitalization of control and supervision in the financial sector as a condition for the introduction of monitoring tools. Attention is drawn to the scientific positioning of monitoring as a way to resolve and prevent disputes in the financial sector.