Car Down Payment Calculator

Translate a down-payment percentage into real numbers. Enter the price, your percent down, the APR, and the term — you’ll see the down payment, the amount financed, and the monthly payment.

How this calculator works

The down payment is your percentage of the price. We subtract it to get the amount financed, then apply the standard loan formula at your APR and term to show the monthly payment that results.

What changes the number

20% down on a new car is the classic target — enough to offset year-one depreciation and avoid being underwater.
A bigger down payment lowers both the monthly payment and the total interest you pay.
Tax, title, and fees come on top of the price — decide whether you’re paying those in cash or rolling them into the loan.

Frequently asked questions

How much should I put down?

On a new car, around 20% is a good target; on a used car, enough to avoid owing more than it’s worth. More down always means a lower payment and less interest.

Does a down payment lower my interest rate?

Not directly, but it lowers the amount financed, so you pay less total interest — and a larger down payment can help you qualify for better terms.

Is a trade-in the same as a down payment?

Functionally similar — both reduce the amount financed. Use the car loan calculator to combine a down payment and a trade-in.