Author Description

In recent days, there is an active discussion on the size of the social welfare expenditures. We need to evaluate first on the efficiency of current fiscal expenditure, because the source of the government expenditure is mostly financed by tax. Specifically, we need to investigate whether the expenditure properly attain its original objective, the effectiveness of the short- and long-term expenditures, and the appropriateness of the size of the government expenditures. In this research, we investigated the burden of net-tax by income decile group. The net tax is defined as the difference between taxes and benefits. A micro-simulation model for the tax-benefit model is started to be developed with the basis of this research. Major findings can be summarized as follows. The overall average amount of the market income per month is 3,430 thousand Won. The monthly amount for the first income decile is 210 thousand Won, 2,830 Won for the fifth dcecile, and 8,920 thousand Won for the richest decile. Private transfer varies according to the income decile groups. It is 100 thousand Won for the first decile group, 110 thosand Won for the fifth decile group, and 220 thousand Won for the tenth income decile group. On the other hand, the public transfers are heavily concentrated on the lowest income decile group. 380 thousand Won per month for the lowest income decile group. 220 thousand Won for the second lowest income decile group, 130 thousand Won for the third income decile group. For the richest income decile, the amount of the public transfer per month is only 60 thousand Won per month. Thanks to the public transfers, the total income from the lowest income decile group tose to 800 thousand Won, and 1,610 won for the second income decile group. The amount of the public transfer decreases as the income increase, it is clear that the public transfers serve as a useful policy instrument for the income redistribution. Regarding inco