The Equity of National Health Insurance Contribution in South Korea

Abstract

The Korean Health insurance system constructed nationwide single insurance system including city and fishing and agrarian villages for relative short term and financial management and operation is integrated. However, premiums charged system is the dual system which has different factors between self-employed and employees and method of calculation is different. Inequity of premium caused by this dual charged system is obstacle of system improvement. Thus, this study analyzed ability to pay by measuring earned income, aggregate income, total expenses for unifying different charged system between insured in Korea. Furthermore, we analyzes the equity in actual payment and contribution ability using the Kakwani index. We used Family Budget Survey data and extracted records from 10,046 households. Major result of the study is that earned income or total income was degressive, and aggregate income was progressive. Therefore, we concludes by suggesting a unified contribution rate system that have to be based on households’ aggregate income.