The objective of this study is to investigate the effect of internally generated revenue on the economic growth of the plateau state. The study focuses on pay-on-earnings, direct assessment, license, withholding tax and real gross domestic product of the plateau state. The study adopts time series data from 2014 to 2019; the data were collected data were collected from plateau state bureau of statistics and the plateau state internal revenue service. The data were analyzed using descriptive statistics and a simple line graph, and the null hypotheses were tested using the ordinary least square with the aid of e views version 10. The results of this study show that that internally generated revenue has significant effect on the economic growth of plateau state. This study recommends that the information communication technology (ICT) for revenue generation should be upgraded or replaced with more recent one to meet with the demands of both the tax payers and the administrators. The government should invest in innovations, human capital and knowledge management and any other government policy that would boost economic growth in the State.