The Chartered Institute of Taxation of Nigeria started on February 4, 1982 as Association of Tax Administrators and Practitioners. Thereafter, it transformed into Nigeria Institute of Taxation, which was formally launched on February 21, 1982 and statutorily recognized on May 6, 1987 as company Limited by Guarantee.
The Institute was chartered by the Federal Government of Nigeria by the enabling Act No. 76 of 1992 (now CITN Act, CAP C10, Vol. 2, Laws of the Federation of Nigeria, 2004) and was charged with the responsibility, among others, of determining what standards of knowledge and skills are to be attained by persons seeking to become a professional Tax Practitioner or Administrator.