Research On The Impact Of Enterprise Income Tax Preference On Enterprise Innovation Input

At present,the innovation investment of enterprises is closely related to the preferential policies of income tax,and the influence relationship between them is the focus of the government and enterprises.This paper studies the theoretical mechanism and relationship of the impact of corporate income tax preference on innovation input,and on this basis,gives the relevant policy recommendations of corporate income tax preference.The thesis research mainly includes four aspects: First,the theoretical analysis and research hypothesis of the impact of corporate income tax incentives on innovation input.Starting from the aspects of reducing innovation costs and sharing innovation risks,the mechanism of corporate income tax incentives and incentives for innovation investment is discussed.Next,it analyzes the existence of threshold characteristics of corporate income tax incentives and innovations for incentives;and how corporate heterogeneity affects the policy Incentive to innovation.The second is an analysis of the status quo of Chinas corporate income tax incentive incentive innovation investment.Analyze the current situation of Chinas innovation investment from two aspects: capital investment and human investment;comb the current corporate income tax incentives for innovation incentives in China;and put forward the shortcomings of the current corporate income tax incentives.The third is an empirical test of the relationship between corporate income tax incentives and innovation input.On the one hand,a polynomial regression equation is used to initially verify the positive incentive effect of the two;on the other hand,a panel threshold measurement method is used to verify the threshold characteristics of the two;in addition,due to the consideration of enterprise heterogeneity(the difference in the size of the enterprise and the nature of property rights))Will affect the innovation decision-making behavior of enterprises,so further examine the impact of different enterprise sizes and different property rights on the incentive effect of preferential innovation investment of corporate income tax.Fourth,related policy suggestions on corporate income tax incentives and innovation input.The research conclusions are as follows:(1)Corporate income tax preference has a significant positive incentive effect on innovation input;(2)The model passes the double threshold test,which indicates that there is a threshold effect on the positive incentive effect of corporate income tax preference on innovation input.That is,in the optimal range of incentive strength,the preferential incentive effect of corporate income tax incentives on innovation investment is strongest;when the incentive strength is too low or too high,the incentive effect of innovation investment will be weak.The curve has a positive inverted "U" shape.(3)Based on the perspective of corporate heterogeneity,it is found that the incentives for corporate income tax incentives for small-scale and state-owned enterprises to stimulate innovation investment are more significant.