Kassie, Abebaw (PhD)Zewude, Belay2018-06-212023-11-042018-06-212023-11-042015-06http://etd.aau.edu.et/handle/123456789/2762Most developing countries have been faced problem of increasing tax revenue as they need to cover expenditure. Since Ethiopian is one part of developing country, pattern of tax revenues and economic growth across countries has become a significant concern to it. This study so investigated the determinants of tax revenue performance in Ethiopian federal government by using time series data from 1992-2013.The variable used were Foreign direct investment, public debt, openness ,foreign aid ,inflation and gross domestic product. The study has employed both descriptive and time series regression method as well as Eviews software for analysis purpose. Also post positivism research approach has been used. The trend of tax collection in Ethiopia is inconsistent, changing upward and downward depending upon economic conditions. However, in recent years it shows an incremental in total tax collection but performance of tax collection is decreasing from year to year. As an example, tax revenue was increased staring from 2003, because tax base was added as the form of VAT and also GDP was the main contributor since it has been rapidly increased. The study made diagnostic tests to assess the fitness of the model. The study reveals that growth domestic product, public debt foreign direct investment, and openness, have significant positive relationship with tax revenue performance. But, foreign aid is negatively related to tax revenue performance. The study also provides recommendations that will be solve this problem and added tax revenue performance. Policy implication has been stated in this study for example government should adjust its fiscal policy and investment area should be selected based on their benefit for country. Key words:Tax revenue: Determinants of tax: Time Series analysis: Ethiopia Federal Governmenten-USTax revenue; determinants of tax:;Time Series Analysis; Ethiopia Federal GovernmentThesis