Credit card installment is calculated by equal principal and interest. Although the monthly repayment amount remains unchanged, the principal keeps decreasing, which leads to the low utilization rate of funds, so the calculated interest is high.

For example, the real interest rate of equal principal and interest repayment method, credit card bill 10000 yuan, annual interest rate of 0.6% * 12 = 7.2%, looks quite cheap. If it is divided into 65,438+02 installments, the principal to be repaid every month is 833 yuan, and the interest is 60 yuan.