Analysis of Inequality of Public Transfer Income by Income Level

소득계층별 공적이전소득의 불평등 변화분석

  • Lee, Yong-jae (Dept. of Social Welfare, Hoseo University) ;
  • Kim, Yong-mi (Dept. of Social Welfare, Chung Cheong University)
  • 이용재 (호서대학교 사회복지학과) ;
  • 김용미 (충청대학교 사회복지과)
  • Received : 2018.10.29
  • Accepted : 2018.12.20
  • Published : 2018.12.28


This study was carried out by using the concentration index calculation method from 1996 to 2016 by using the household trend survey data to confirm the difference of income transfer income and inequality in public transfer income. The main results are as follows. First, the public transfer income concentration index in 1996 was concentrated on the high income group with +0.2774, but since 2009, the concentration index has been negative (-), which has concentrated on the low income group. However, the effect of redistribution of income was small. Second, the average public transfer income of low - income households increased significantly while the number of high income earners decreased. It is gradually improving that public transfer income did not play a role in the improvement of income inequality. Third, public transfer income has been continuously increasing in all income classes, and the rate of increase is low in the low income class and slow in the high income class, so the public transfer income of the low income class is higher than that of the high income class. In sum, the inequality of public transfer income by income class in Korea is gradually improving, but it is not considered to be a level that can improve the inequality between income groups.

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Fig. 1. Concentration curve and Concentration index[19]

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Fig. 2. Changes in the Public Transfer Income Concentration Index by Income Class(’96–’16)

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Fig. 3. Changes in Public Transfer Income Average by Income Class(’96–’16)(Unit : won)

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Fig. 4. Change in the ratio of income to the pre-5th quartile relative to the overall average public transfer income(’96–’16)

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Fig. 5. Change in the ratio of income to the 6-10th quartile relative to the overall average public transfer income(’96–’16)

Table 1. Mean and Inequality of Public Transfer Income by Income Class(1996–2016)

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Table 2. Mean and Inequality of Public Transfer Income by Income Class(continued)

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