Impact of fiscal policy on Private Investmen in Iran and the role of tax policy in that in Iran and the role of tax policy in that in Iran and the role of tax policy in that

This paper, in terms of government financing bonds as a distinguishing feature of this study from other studies, seeks to examine the impulsive effects of government investment policy on private investment and its interaction with these bonds in a dynamic general equilibrium model. It is a coincidence with the Bayesian solution method in the 70s and 90s.Also, This article seeks to compare the effects of this policy by eliminating tax shocks. The results show that in the event that the government issues bonds to finance itself, initially public and private investment have crowd out effect and with the completion of government development projects and the preparation of infrastructure by the government, private investment will increase. Also, value added and price levels increase. Also, these results may not lead to such results if tax policies are not implemented. Due to government intervention and government investment, and thus the formation of the total investment by government, it is obviously, with this intervention, there is no traditional relationship between interest rates and private investment and the other hand, this traditional link, between interest rates and investment has been dispelled by domestic resource theorists. In particular, as Shaw and Mckinnon show, this relationship is eliminated in developing countries, although the lack of this relationship is also observed in other developed countries. Also, the results of the present study confirm these economic theories about the Iranian economy. And the other hand, after presenting the conclusions and recommendations of the model, other offers are also provided to public financing