The Federal Inland Revenue Service (FIRS) came into being in 1943 when it was carved out of the erstwhile Inland Revenue Department of the then Anglo-phone West Africa during the colonial era. In 1958, the Board of Inland Revenue was established under the Income Tax Ordinance of 1958. Following various reform programmes, the Federal Inland Revenue Service (FIRS) was formed through the enactment of the FIRS (Establishment) Act 13 of 2007. By virtue of its mandate as stated in the Act, the FIRS is charged with the primary responsibility of assessing, collecting and accounting to the federal government various federal taxes specified in the First Schedule of the Act. Read more here: