Accurately calculate auto loan monthly payments and interest. Supports both fixed payment and fixed principal methods to help you plan your car buying budget.

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When you need to know the true cost of financing a car, the auto loan calculator uses financial math formulas to convert the loan amount, interest rate, and term into a straightforward monthly payment figure. The core unit processed by this tool is the Annual Percentage Rate (APR). It supports two calculation models: fixed payment (equal monthly installments) and fixed principal (equal principal payments), outputting key data including total interest, an amortization schedule, and the remaining principal balance.
Q: Which is better, fixed payment or fixed principal?
A: The fixed principal method results in less total interest paid, but the initial monthly payments are higher. The fixed payment method offers a consistent monthly payment, but the total interest paid is slightly higher.
Q: What if the calculation results differ from the actual bank loan?
A: This tool uses standard financial calculation formulas, but actual loans may include additional costs such as processing fees and insurance premiums. We recommend relying on the bank's final approval; these results are for budgeting reference only.
Do not include the % symbol when entering the annual interest rate. For the fixed principal method, the first month's payment is the highest, so ensure you have sufficient funds. The calculation results do not account for variable interest rates or early repayment scenarios.
The fixed payment method is better suited for users with a stable monthly income. The monthly payment calculation formula is: M = P × [r(1+r)^n] / [(1+r)^n - 1]. For example, a 300,000 loan with an annual interest rate of 4.7% and a 5-year term will have a monthly payment of approximately 5,618, with total interest of about 37,080. We recommend comparing the monthly payments across different loan terms to find the right balance between financial pressure and total cost.