| In recent years,as environmental problems and energy crises have intensified worldwide,countries have put more resources into the research and the development of new energy vehicles.Although domestic new energy vehicles have made some progress in core technology,the battery range is still weak,long-life batteries are still lacking,and the energy utilization rate is not as good as expected.Therefore,enhancing the technological innovation level of related enterprises and improving the efficiency of technological innovation is the key to enhance their consequential competitiveness and to solve these problems.In order to support the technological innovation of new energy vehicles,China introduced a series of tax incentives.It is of great significance to analyze the influence of tax incentives in the process of improving the efficiency of technological innovation of new energy vehicle enterprises,and to further improve the policy by combining some problems of the existing tax incentives.This paper carries out an empirical study based on theoretical analysis and current situation.First of all,a DEA-Malmquist model is constructed to measure the technological innovation efficiency of 173 A-share listed companies of new energy vehicles screened from 2016 to 2021.Additionally,we divided the tax incentives into transfer tax incentives and income tax incentives and studied the effects of the incentives on the technological innovation efficiency of new energy vehicles separately,and gained some conclusion — 1.the technological innovation efficiency of new energy vehicle enterprises has increased year by year;2.there is only a linear and significant positive effect of income tax incentives on the technological innovation efficiency of new energy vehicle enterprises;3.after adding the quadratic term,there is an inverse "U" type non-linear relationship between income tax incentives on the efficiency of technology innovation of new energy vehicle enterprises,the inflection point is 2.226%;4.the combination of income tax incentives and transfer tax incentives can produce positive interaction effects;5.the incentive effect of income tax incentives on the technological innovation efficiency of large new energy vehicle enterprises is more significant;6.the inverted "U" relationship between the preferential intensity of turnover tax and the efficiency of technological innovation of enterprises will not change due to the different nature of enterprise property rights.According to the above findings,the following policy recommendations are proposed: Firstly,enterprises should fully exploit the existing preferential policies,and preferences should be enjoyed as much as possible.Secondly,enterprises should allocate their resources reasonably and utilize them thoroughly for the research of the three core components.Thirdly,the government should enhance the systematic and targeted preferential policies according to the characteristics of new energy vehicle enterprises,and improve the preferential policy level.Finally,the government should establish an evaluation mechanism for the effect of policy implementation,strengthen policy supervision,and realize the precedent management,periodical control and subsequent supervision in the process of tax incentives. |