Tax Reform and the Dynamics of Macroeconomic Variables in Iran: A Dynamic Stochastic General Equilibrium (DSGE)

In many developed countries, the positive features of consumption tax have led to the increasing use of it. In a way, the revenue collected from the consumption tax has replaced the income tax. In this paper, the effects of implementing the policy of increasing the consumption tax rate and decreasing the income tax rate on some macro variables of the Iranian economy were investigated using the DSGE model. The results show the positive effects of this policy on GDP, investment, employment and government budget in the short and medium term. Although consumption is declining in the short term and decreasing compared to before the implementation of the policy, it is rapidly increasing to the previous level and in the medium term to a higher level. In the long run, all variables return to the pre-policy process. Therefore, the implementation of this policy is proposed in line with the principles of resistance economics and in order to improve the performance of the tax system.