This research is titled "Priority Ranking of Factors Affecting Tax Evasion" in order to identify which factor has a more significant impact on tax evasion. The study population consists of four groups: 35 experts and university professors, 35 tax payers and merchants, 35 tax office employees, and 35 managers of private organizations. The opinions of each group were separately examined and studied, and the overall results are presented in this research. The findings of this research, obtained through the Analytic Hierarchy Process (AHP) method, indicate that the economic-technical factors have a weight value of 0.616, the political-security-administrative factors have a weight value of 0/231, and the legal-social-cultural factors have a weight value of 0.153 in terms of their impact. The highest impact is related to the following four factors: economic instability, increased unemployment, inflation, and changes in the income of taxpayers, with a weight value of 0.202. The existence of fake jobs and underground activities with a weight value of 0.106, the absence of an electronic system and weaknesses in the use of electronic tools with a weight value of 0/106, and the improper collection and allocation of budget with a weight value of 0.076 are also influential factors. The first three factors belong to the economic-technical factors, while the fourth factor belongs to the political-security-administrative factors. Therefore, it is necessary for tax policymakers, tax administrators, and managers of tax organizations to pay attention to these factors and take more effective measures to address the issue of tax evasion. This can be done through electronicization of the tax system, providing training on the use of technological tools, eliminating fake markets and businesses, and ensuring proper utilization of collected tax revenues.