The Federal Inland Revenue Service, FIRS, has brokered a Memorandum of Understanding that puts an end to a 17-year tax practice rift between members of the Institute of Chartered Accountants of Nigeria, Chartered Institute of Taxation of Nigeria and the Association of the National Accountants of Nigeria. CNBC Africa’s Kenneth Igbomor caught up with the Executive Chairman of the FIRS, Muhammad Mamman Nami for more.