Car loan repayment.
Monthly
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Total interest
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Total paid
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Worked example
Suppose you finance $35,000 (the drive-away price less your deposit) at 8 percent APR over 5 years. The calculator turns the 8 percent into a monthly rate of about 0.6667 percent and spreads the loan across 60 repayments. The amortising formula gives a monthly repayment of roughly $709.67. Across all 60 payments you repay about $42,580, so the total interest is close to $7,580 on top of the amount financed. A larger deposit lowers the financed figure and cuts both the monthly repayment and the interest, which is why putting more down at the start is the simplest way to reduce the cost of a car loan.
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How it is calculated
The car loan uses the same fixed amortising formula as a standard term loan. It takes the amount financed, divides the APR by 12 to get a monthly interest rate, and treats the term as a count of monthly payments. The monthly repayment is the level amount that clears the balance over the full term while charging interest on the outstanding balance each month. Total paid is the monthly repayment times the number of payments, and total interest is that total minus the amount financed. The calculator works on the amount financed, so reduce the price by your deposit and any trade-in before entering it. Secured car loans usually carry lower rates than unsecured personal loans because the vehicle acts as security, and a novated lease can change the picture again for eligible buyers by using pre-tax salary.