On June 1, 1949, NTA was established as an affiliated agency of the Ministry of Finance, responsible for assessing and collecting national taxes. Until then, this role was performed by Tax Bureau of Ministry of Finance. Immediately after the
Second World War, tax administration did not function properly as the Tax Bureau had undertaken out-of-scope operations. This organizational reform established NTA's current three-tiered organizational structure consisting of the head office, regional taxation bureaus and tax offices. NTA consists of the headquarters office, 11 regional taxation bureaus (Sapporo, Sendai, Kanto-Shin-Etsu, Tokyo, Kanazawa, Nagoya, Osaka, Hiroshima, Takamatsu, Fukuoka and Kumamoto), Okinawa Regional Taxation Office and 524 tax offices throughout the country. NTA's headquarters office has four departments: Commissioner's Secretariat; Taxation Department; Revenue Management and Collection Department; and Examination and Criminal Investigation Department. Examination and Criminal Investigation Department at regional taxation bureau level examines large-scale corporation's corporate and consumption taxes and investigates tax evasion cases. The local tax office is a front-line administrative body in charge of assessing and collecting domestic taxes and has the closest contacts with taxpayers. Tax office is authorized to assess and collect domestic taxes within its responsible area. Its organization structure varies, depending on tax office's scale. Generally, a tax office has 1 division and 4 groups: co-ordination division, revenue management and collection group, examination group (individual), examination group (property tax), and examination group (corporation).
Budget and personnel As of the end of FY2003, the number of employees stands at 56,315. As of FY2003, the total budget for tax collection operating costs stands at 721.9 billion yen. The cost to collect 100 yen of tax and stamp duty revenues (return on collection) is 1.78 yen as of FY2003, while it was 2.79 yen in FY1950. ==Voluntary reporting system==