The initiated scientific research is devoted to the urgent issue of determining the role of tax policy in ensuring the sustainable functioning of the financial and economic security of the state. It has been proven that the proper provision of such a component is one of the important prerequisites for the necessary stability of the entire national economic system and is a guarantee of its progressive development. In view of the importance of this component, the need to implement all the available potential of means of all its authorized support is emphasized. It is indicated and argued that the tax policy is one of the most promising measures for the fulfillment of such tasks in the current period. The peculiarities of the financial and economic security of the state are defined and analyzed. It was found that the category of the same name is an understudied but promising object of scientific knowledge. It is emphasized that a wide range of mutual relations with the financial component in comparison with the rest of the subsystems of the economic security of the state are in favor of its use. Its exceptional importance is emphasized from the point of view of direct and indirect prevention and counteraction of many challenges, threats and risks to the national security of Ukraine. The tax policy in modern domestic realities is characterized. It is noted that it is characterized as the activity of many state bodies on issues of establishment, organization, as well as legal regulation of tax administration and tax payments. Such activity itself involves the active application of various management forms, methods, and methods and is carried out with the help of appropriate tools. The role of such a tool from the point of view of influence on the course of processes under the auspices of the financial and economic security of the state is evaluated. It was noted that tax policy in current conditions is often of decisive importance from the standpoint of mobilization, distribution and redistribution of financial resources, stability of the financial and economic component, support and growth of its potential, guaranteeing the interests of taxpayers, ensuring fair conditions for the latter, etc.