How the auto loan calculator works
Your amount financed is the vehicle price minus your down payment and any trade-in value. We then apply the standard loan formula at your APR over the chosen term to find your fixed monthly payment.
Lower your car payment
- A bigger down payment cuts both the payment and total interest.
- Shorter terms have higher payments but much less interest.
- Shop your APR — credit unions are often cheaper than dealer financing.
Frequently asked questions
Does this include tax and fees?
No — add sales tax, registration and dealer fees to the price for a full estimate.
New vs used rates?
Used-car APRs are usually higher. Enter the rate you were quoted for accuracy.
Methodology and assumptions
- Instant browser math: results update from the inputs on this page and are not sent to an account.
- Next-step design: the score and action prompt are meant to help you compare scenarios and take one small practical step.