Why Use This Calculator?
The monthly payment is what the dealership wants you to focus on — the total cost is what you should focus on. This calculator credits your down payment and trade-in first, then shows the payment, the interest, and what the car really ends up costing.
Stretch a loan to 72 or 84 months and the payment shrinks while the interest quietly grows — on a used car, you can end up owing more than it's worth for years. Test a 60-month term against the long ones above.
How It Works
- Enter the vehicle price, your down payment, and any trade-in value.
- Set the APR your lender quoted and pick a term.
- Compare total interest across terms before you sign.
Frequently Asked Questions
How does a car payment calculator work?
It subtracts your down payment and trade-in from the vehicle price, then computes the amortized monthly payment on the remainder at the quoted APR — the same math lenders use.
Is a 72-month car loan a good idea?
It lowers the monthly payment but raises total interest, and you risk being upside-down (owing more than the car is worth) for years. If you need 72+ months to afford the payment, the car is probably too expensive.
Should I include my trade-in?
Yes — trade-in value reduces the amount financed dollar for dollar, which lowers both the payment and the interest you'll pay.
Tips & Things to Watch
- Get pre-approved by a bank or credit union before the dealership — compare both APRs.
- Watch for negative equity: rolling an old loan into a new one compounds the problem.
- Keep the term at 60 months or less whenever the payment allows.