國民年金의 厚生費用 歸着에 대한 一般均衡 시뮬레이션 分析

An Applied General Equilibrium Study on the Walfare Incidence of U.S. Social Security System

There have been many discussions about the economic distortions of social security. This paper analyzes the Welfare incidence among income groups. The method used is an applied equilibrium model in the context of lifecycle theory where the consumer is devided into five groups according to the lifetime income level. The main contributions and findings of this paper are as follows. First, it is a new approach to measure the distributional effects of social security taxation with lifecycle applied general equilibrium model. Second, the existing social security progrem has a progressive incidence in terms of the lifetime distribution of welfare, but imposes an efficiency cost on the economy. Third, the incidience of social security should be examined in a lifecycle framework, and should include social security benefits as well as taxes, or the results will be significantly biased. The analyze in this paper focuses on steady states. It would also be of intrest to analyze the transitional paths of welfare changes among each general annually. and to introduce the actual or estimated demographic change into the model. These extensions would provide further inwight the effects of social security.