How Much Should I Put Down on a Car? (2026)

A common guideline is to put 20% down on a new car and at least 10% down on a used car. Because a new car depreciates so quickly, a meaningful down payment keeps your loan balance below the car’s value, lowers your monthly payment, and reduces the total interest you pay. You can sometimes buy with little or nothing down, but it usually costs you more and adds risk.

Why the 20%/10% guideline exists

A new car can lose about 20% of its value in the first year. If you finance the whole price with no money down, you immediately owe more than the car is worth, a situation called being “underwater” or “upside down.” Putting 20% down on a new car (10% on a slower-depreciating used car) roughly keeps your loan balance in line with the car’s value from day one.

What a bigger down payment gets you

Lower monthly payment. You finance less, so you pay less each month.
Less total interest. A smaller loan accrues less interest over its life.
Avoids being underwater. You owe less than the car is worth, important if it is totaled or you sell early.
Better loan terms. Lenders often offer lower rates to borrowers who put more down.
Less need for gap insurance. When you are not underwater, gap insurance matters less.

The risk of little or no money down

Zero-down loans are tempting because they require no upfront cash, but they:

Maximize your loan balance, payment, and total interest.
Leave you deeply underwater for the first couple of years.
Make it costly to sell or trade the car early, and risky if it is totaled.

If a small down payment is all you can manage, that is okay, just understand the trade-off and consider gap insurance until you catch up.

Don’t drain your emergency fund

A bigger down payment is good, but not if it wipes out your savings. Keep your emergency fund intact, the goal is a healthy down payment and a financial cushion, not one at the expense of the other.

Bottom line

Aim for 20% down on a new car, 10% on a used car when you can.
A larger down payment lowers your payment and interest and keeps you from going underwater.
Zero-down is possible but costlier and riskier, and never empty your emergency fund to do it.

See how your down payment changes the numbers with our auto loan calculator. This article is general information, not financial advice.