Auto Loan Calculator
Estimate the monthly car payment, amount financed and total interest including tax, fees and trade-in.
Free · No sign-up · Your inputs stay in your browser
Your numbers
Price the loan, not just the payment
Your projection
$623.98 a month
Amount financed
$31,140
Total interest
$6,299
Total paid for the car
$41,439
Most states tax the price after the trade-in; a few do not. A longer term lowers the payment and raises the interest, and it is how buyers end up owing more than the car is worth.
About this tool
Method, assumptions, practical next steps, and limits.
Negotiate the price, then the loan
Dealers often quote a monthly payment, which a longer term can make look affordable. Knowing the amount financed and total interest keeps the comparison honest.
How the calculation works
Amount financed = (price − trade-in) × (1 + sales tax) + fees − down payment
A $32,000 car with 7% sales tax, $900 of fees and $4,000 down means financing $31,140. At 7.5% APR for 60 months, the payment is $623.98 and total interest is about $6,299.
Watch the term
Terms of 72 and 84 months lower the payment and raise interest, and they make it more likely to owe more than the car is worth. Get a preapproval from a bank or credit union before visiting the dealer; the CFPB publishes an auto loan shopping guide.
