Auto Loan Calculator
Monthly car payment with full amortization. Include trade-in value and sales tax in the financed amount.
Results
Monthly payment
$0.00
Loan amount
$0
Total interest
$0
Total paid
$0
Principal
Interest
What gets financed
The amount financed is the vehicle price plus sales tax, minus down payment and trade-in. This calculator rolls tax into the loan (most US lenders do); if you pay tax separately at the dealer, subtract it from the price before entering.
The formula
M = P · r(1+r)n / ((1+r)n − 1)
where P is the financed amount, r the monthly rate (APR ÷ 12), and n the total months (years × 12).
Tips
- Auto loan rates vary wildly by credit score. Below 660 you're often paying 10%+; above 740 you may see under 6%.
- 72- and 84-month terms make the payment look smaller but you'll pay much more interest and likely be underwater on the loan for years.
- The dealer's monthly payment is the wrong negotiation lever — negotiate the price first, then the financing.