MotorCrunch
🏦 Car Financing

Car Down Payment Impact Calculator

See exactly how every extra dollar down changes your payment and total interest.

Your numbers

Monthly payment

$581

Total interest

$5,866

Saved vs $0 down

$100

per month

Insight — A bigger down payment cuts both the payment and the interest you pay on every future month. Around 20% down also helps you avoid being 'underwater' (owing more than the car is worth) early on.

What if Down payment changes?

Down paymentMonthly payment
$0 $681
$2,500 $631
$5,000 · now$581
$10,000 $481
$15,000 $381
$20,000 $281

Don't take the first rate you're offered

Get pre-approved by a bank or credit union first, then make the dealer beat it. Our financing tools show what's fair.

Explore financing tools

Free · No sign-up · Independent, source-based math

Good to know

Clear, practical answers about the down payment impact calculator.

How much should I put down on a car?

A common target is 20% down on a new car and 10% on a used car. More down means a lower payment, less interest, and a much lower chance of owing more than the car is worth if you sell early.