基于行业差异的企业年金最优个人缴费率研究

借助于两期叠代模型,构建个人效用函数以及政府社会福利函数,测算满足个人生命周期效用最大化和社会福利最大化的最优企业年金个人缴费率.研究表明:全社会最优的年金个人缴费率为6.40％,当前费率水平还有较大提升空间；按各行业最优缴费率征缴年金费用,可以提高年金制度的养老保障程度；把过剩的年金缴费能力转移给个人账户,可以实现帕累托优化效果；给予年金个人缴费5％的税收优惠,可以鼓励和加快年金制度发展.

Research on Personal Optimum Payment Rate of Enterprise Pension based on Industry Difference

Using an overlapping generation’s model and constructing the utility function of individuals and the utility function of the government’s social welfare,optimum payment rate of enterprise pension is measured under maximizing personal utility in life cycle and maximizing welfare.The results show that: the optimum payment rate of personal pension is 6.40%,so there is more room to improve at current rate level.We can increase the level of endowment insurance on pension if we levy pension costs at optimum payment rate in each industry;we can realize Pareto optimization if we transfer excess pension contribution ability to individual accounts;if the government gives 5% of tax incentives on personal pension,it can encourage and accelerate the development of pension system.