A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Business Administration (MBA), of the Mzumbe University, Dar es Salaam Campus Mzumbe UniversityThe study aimed at assessing the impact of tax amnesty on revenues increase in Tanzania with three specific objectives namely: to examine the effects of tax amnesty on tax revenue growth, to examine the effects of tax amnesty on business income, and to examine the effects of tax amnesty on large taxpayers’ compliance. The study employed a mixture of both quantitative and qualitative approaches using descriptive design. It employed simple random sampling procedure to obtain a sample of 20 large taxpayer companies located in Dar Es salaam and purposive sampling to select six top officials; three from TRA and three from the large taxpayer companies. Data were collected through documentary analysis and interviews. Data were quantitatively and qualitatively analyzed using descriptive statistics and content analysis respectively. The research findings showed that tax amnesty has positive impact on government tax revenues and large taxpayers’ tax compliance, but negative impact on large taxpayers’ business incomes. Therefore, it is concluded that tax amnesty can effectively increase tax revenues and tax compliance among large taxpayers, but not necessarily lead to increase in large taxpayers’ incomes. It is recommended that good management of tax regimes, motivation to large taxpayers through reduced multitude of taxes and appropriate tax education can foster positive impact of tax amnesty among large taxpayers.