대손충당금 적립을 통한 은행의 이익유연화 요인에 대한 연구

The purpose of this study is to analyse bank income smoothing and its motivator through loan loss provisions, by using bank data collected over an 11－year period from 2001. To achieve the purpose, the study was carried out by dividing the loan loss provisions into discretionary and non－discretionary loan loss provisions and measuring the discretionary loan loss provisions to analyze the factors of determination. The determinants of the non－discretionary loan loss provisions were measured using not only the proportion of bank scale variable and loan increase divided by total loan amount, but also the proportion of increased non－performing loan amount divided by total loam amount. The bank BIS ratio and bank return on assets (profits before the discretionary loan loss provisions / assets) were used as the determinant of the discretionary loan loss provisions. The coefficient of regression the BIS ratio having effects on the discretionary loan loss provisions showed a significant negative (－) relation at a level of 1%. The return on assets and discretionary loan loss provisions showed a significant positive (＋) relation at a level of 1%, which proved the increase of discretionary loan loss depreciation. It was shown that a high level of bank profits leads to an increase in the discretionary loan loss provisions and thus the bank profits can be adjusted accordingly. The above results of this study indicates that profit smoothing exists in banks of this country, like the companies, where the discretionary loan loss provisions are used.