The car loan is 80 thousand, and the interest for three years is more than 20 thousand, which is not high. The annual interest rate of this car loan for 83,000 years is about 4.75%. If calculated according to this bank loan interest rate, the three-year interest will be 5,993.29 yuan if equal principal and interest repayment is adopted. Repay the principal in equal amount with interest of 5858.33 yuan. However, some banks should combine the comprehensive factors such as the business type and credit status of the lender to set the price, and then determine the loan interest rate after approval.

1. Calculation formula of equal principal repayment: (1.2 months or more) Interest of the nth installment = loan principal × monthly interest rate = monthly average principal repayment amount. If the loan term of the N-th installment is less than 12 months (including 12 months), the borrower shall choose the repayment method of one-off principal and interest, that is, repay the loan principal and interest to the lender in one lump sum on the expiration date of the loan term, and the interest shall be calculated according to the loan days. Deposit and loan interest rate conversion and interest-bearing formula (I) The interest rate conversion formula for RMB business is: daily interest rate (? ) = annual interest rate (%)÷360-month interest rate (‰) = annual interest rate (%)÷ 12 (2) Banks can calculate interest by product interest method and transaction interest method. (3) Accumulate the account balance daily according to the actual number of days, and multiply the accumulated product by the daily interest rate to calculate the interest. The interest-bearing formula is: interest = accumulated interest-bearing products × daily interest rate, where accumulated interest-bearing products = total daily balance. (4) Transaction-by-transaction interest calculation method calculates interest one by one according to the preset interest calculation formula. If the interest-bearing period is a whole year (month), the interest-bearing formula is: interest = principal × year (month )× year (month) interest rate.

2. If the interest-bearing period is a whole year (month) and there are odd days, the interest-bearing formula is: interest = principal × number of years (months) × annual (month) interest rate principal × odd days × daily interest rate. At the same time, banks can choose to convert the interest period into actual days to calculate interest, that is, 365 days per year (366 days in leap years), and each month is the actual number of days in the Gregorian calendar of the current month. The interest calculation formula is: interest = principal × actual days × daily interest rate. Although credit cards have many advantages, they should be used reasonably and their expenses should be planned well. If possible, go to some financial education communities to learn how to manage money. Through reasonable configuration, your life can be improved, and it won't be too hard to pay off the credit card. In addition, when using a credit card, you must pay attention to your tolerance, pay attention to your credit, and never become a card slave.