Abstract: The subject of the research presented in this article is the theoretical and organizational aspects of creating a system of internal tax control of small enterprises. The author proves that such a system is an effective tool for managing tax risks of organizations to reduce current and potential financial losses of economic entities. The significance and relevance of this issue has been confirmed empirically, including using the latest data from the statistical tax reporting of the Federal Tax Service of Russia. The approach used by the author to the organization of internal tax control is based on the provisions of the COSO methodology, regulatory requirements of domestic legislation and provides for consideration of the specific features of small business entities that affect the procedure for conducting internal control of small enterprises. The criteria of functionality and structural elements of the internal tax control system are defined, their content is described. The approaches proposed by the author to the construction of the internal tax control system are summarized in the form of schemes, algorithms and recommendations that can be taken as a basis for the organization of such work by the heads of small enterprises. The scientific novelty of the research consists in a comprehensive study of the theoretical and organizational aspects of internal control for the development of an internal tax control system and in the application of the conceptual provisions of the theory of internal control to the management of tax risks of organizations, taking into account the specifics of small businesses.