The real cost of a car
The sticker price is only the start. By the time you add sales tax, registration and dealer fees, then borrow the balance at an APR, the amount you actually pay can be thousands more. This calculator rolls all of that together so you can compare the monthly payment against the full, all-in cost before you sign.
Levers to lower the payment
A bigger down payment or trade-in reduces the amount financed directly. A lower APR (shop around — your bank or credit union may beat the dealer) cuts the interest, and a shorter term saves interest overall even though it raises the monthly figure.
Frequently asked questions
What is included in the amount financed?
The loan covers the vehicle price plus sales tax and fees, minus your down payment and any trade-in value. Rolling tax and fees into the loan increases the amount you pay interest on.
How is sales tax handled?
This tool applies the tax rate to the vehicle price. Some regions tax the price after deducting the trade-in, which lowers the tax — check your local rules, as it can change the total.
Should I make a bigger down payment?
Usually yes. A larger down payment shrinks the loan, lowers the monthly payment and total interest, and reduces the risk of owing more than the car is worth (being "underwater").
Is a longer car loan a good idea?
A longer term lowers the monthly payment but you pay more interest and stay in negative equity longer. Cars depreciate fast, so shorter terms are generally safer.
Last updated: June 2026