| The report of the 20 th National Congress of the Communist Party of China emphasized "scientific and technological innovation",accelerated the realization of self-reliance and self-improvement in the field of high-tech level,and took the road of independent innovation.For a long time,China has had the pain point of "lack of core and less soul" in the field of scientific and technological development,and under multiple pressures,the integrated circuit industry has been regarded as a key development object at the national level.As the main body of new industrial development,integrated circuit enterprises can help alleviate the pain points in the field of scientific and technological development.In order to promote the development of integrated circuit enterprises,the state has successively introduced relevant policies to support.Among them,the preferential tax policy can make up for the lack of resource allocation and achieve the industrial goal,so it has been widely used in integrated circuit enterprises.Taking the impact of enterprise income incentives on the comprehensive performance of integrated circuit enterprises as the research object,this paper sorts out the relevant literature of domestic and foreign scholars on the preferential tax policies of integrated circuit enterprises,the evaluation system of enterprise performance and the impact of preferential tax policies on enterprise performance,expounds the corresponding market failure,endogenous growth and tax incentive theories,and analyzes the current development status of China’s integrated circuit industry,the preferential policy of enterprise income tax and the current tax problems.Based on the analysis of relevant theories and mechanisms,relevant hypotheses were put forward,the data of listed integrated circuit enterprises from 2015 to 2021 were selected as research samples,the comprehensive performance score of integrated circuit enterprises in China was calculated by the entropy value method,the impact of corporate income tax incentives on the comprehensive performance of integrated circuit enterprises was empirically tested by using the fixed-effect model,and whether the R&D investment between corporate income tax incentives and enterprise comprehensive performance had a mediating effect.In addition,enterprise S is selected as a case enterprise,and the impact of the preferential enterprise income tax policy on the comprehensive performance of integrated circuit enterprises is further confirmed from the actual situation.Research conclusions:(1)The preferential policy of enterprise income tax is conducive to improving the comprehensive performance of integrated circuit enterprises,and with the strengthening of preferential policies,the comprehensive performance level of enterprises will be higher.(2)Enterprise income tax incentives have a positive incentive effect on the R&D investment of integrated circuit enterprises.(3)There is a partial intermediate effect between R&D investment and corporate income tax incentives and enterprise comprehensive performance.(4)The preferential enterprise income tax has a greater effect on the comprehensive performance of large-scale integrated circuit enterprises than that of small-scale enterprises.Based on this,the government should formulate flexible conditions for integrated circuit enterprises to enjoy enterprise income tax incentives,increase the intensity of R&D incentives for integrated circuit enterprises,expand the scope of enterprise income tax incentives,and introduce preferential income tax policies for venture capital enterprises.At the enterprise level,it is necessary to make reasonable use of preferential tax policies and enhance the enabling innovation and development of enterprises after enjoying preferential tax policies. |