The main objective of this study is to analysis tax revenue collection by the Federal government in Nigeria. The study adopted quantitative research design; the secondary data will be obtained from the FIRS in respect of the total tax revenue collected from the oil and non-oil taxes for the period of 2011-2015. The population of the study is made up of Federal Inland Revenue Services and the sample size is Planning, Reporting and Statistics Departments. The findings from the study revealed that Capital Gains Tax, Stamp Duty, Education Tax and Petroleum Profit Tax are positively significant at 1%, 5% and 10% respectively while Company Income Tax and Value Added Tax are not significant. However, Company income tax has more total collected revenue than all the remaining variables. Therefore, it is recommended that government should enhance the collection of tax revenue processes and ensure that any deviations from compliance with the laid down rules and regulations are severally dealt with and punished accordingly
Keywords: FIRS, Federal government, Nigeria, Tax Revenue, revenue collection