The subject of the research is tax consulting aimed at ensuring the proper business activity of organizations. The purpose of the research was is to substantiate the need for the tax consulting as a special tool for supporting corporate business activities. The paper deals with the current specifics of the tax consulting as a separate area of the service economy within the framework of the service-dominant logic concept that reflects the degree of involvement of all participants of financial relations in the tax consulting processes. From the standpoint of institutionalism, the tax consulting institution is regarded as a financial intermediary performing mediation or auxiliary functions to ensure interactions between basic agents of the economic system, in particular, communications between the state and business entities. Based on the research findings, it is concluded that a developed tax consulting institution as an integrated attribute of the tax system determines the levels of corporate business activities and business development. The research findings are intended for participants of the tax consulting and auditing market.