Abstract. This article analyzes the importance, structure and effectiveness of the state budget revenue system. The main attention is paid to the specifics of the sources of state budget revenue of the Republic of Uzbekistan, their role in economic development and comparison with international experience. Statistical analysis, regression methods and comparative analysis were used as research methods. The results studied the main sources of state revenue and their impact on economic indicators, and identified the shortcomings of the existing system. Based on the discussions, proposals were developed to simplify tax policy, reduce the black economy and use the opportunities of the digital economy. This study serves as an important theoretical and practical basis for modernizing the state finance management system.