Despite recent tightening of the government's comprehensive real estate measures and strengthening supervision of mortgage lending by the financial supervisory authorities, the surge in mortgage lending has been maintained. In addition, unlike advanced economies such as the United States, where long-term fixed-rate loans are dominant, floating interest-rate loans, which transfer future interest rate risk to borrowers, account for a high proportion.
The purpose of this study is to investigate the effect of mortgage loan interest rate type on the profitability of financial institutions, and to find out the satisfactory contacts between mortgage users and financial institutions by the effect of the mortgage loan interest rate type on the profitability of the financial institution and to find out the contact studying problems and institutional improvement measures. The delayed payment rate of domestic banks is set by adding 6~8% to the contract interest rate in units of less than one month, less than three months, more than three months. Since the delinquency interest of less than 3 months is classified as the normal bond, the positive(+) factor is high in the profit structure of the financial institution. However, since the portion of the real income from delinquent interest is insignificant compared to the income from the mortgage loan interest in Korea, the effect of the overdue interest on the bank profit is not large. The current rate of fixed interest rates is low. If the rate of increase in the deposit rate is not greater than the rate at which the loan rate rises, there is no significant difference in bank income due to fixed interest rate loans. The floating interest rate is 78.7% in 2013, 68.7% in 2015, 65.5% in 2016, indicating that 65% of the loan interest income consists of floating interest rate products. Therefore, the volatility of market interest rates is a sensitive factor for the bank's profit structure at present and it seems necessary to distribute interest income reliance. Household debt soundness management policy should approach the direction of minimizing housing market volatility in a period of rising interest rates, and policy approaches are required such as limiting the rapid increase in credit interest rate spread and added interest rate, minimizing market risk for customers, and sharing market risk in financial markets. As a result of analyzing the mortgage lending rate, it is necessary to choose a fixed interest rate type for the interest rate rise period to defend the interest burden on interest rate hikes. In order to do so, it is necessary to reduce the gap between the fixed rate and the floating rate.