The apex body of the department is the Central Board of Direct Taxes (CBDT). CBDT functions as a division of the Ministry of Finance under the Department of Revenue. Its functions include formulation of policies, dealing with natters relating to levy and collection of direct taxes, and supervision of the functioning of the entire Income Tax Department. CBDT also proposes legislative changes in direct tax enactments and changes in rates and structure of taxation in tune with the policies of the Government.
The Board comprises of the Chairman and six Members. The Chairman is the co-ordinating head and each of the members has been assigned a specialized function. They are assisted by Joint Secretaries, Directors, Deputy Secretaries, Under Secretaries and ministerial staff for carrying out their day-to-day functions.
The Investigation Directorates and the Central Charges of the department, which are headed by the Directors General of Income Tax (Investigation) and the Chief Commissioners of Income Tax (Central), function under the supervisory umbrella of Member (Investigation) in the CBDT. The Chairman and other Members have been assigned territorial zones for the purpose of supervising and monitoring the work of field formations.
For the effective discharge of its functions, the CBDT is assisted by a number of attached offices known as Directorates. These directorates have been assigned specific functions like vigilance, inspection, judicial, recovery, maintenance of statistics, printing and publications, publicity, conducting of departmental examinations, imparting of training to officers and staff, etc. These functions are performed by the directorates at the all-India level.