How Much Should You Put Down on a Car?

Why the down payment matters

Your down payment is the single biggest lever you have over your monthly payment and the total cost of your loan. Put more down and three things happen at once: your monthly payment drops, you pay less interest over the life of the loan, and you're less likely to owe more than the car is worth (being "upside down").

A reasonable starting point

A common guideline is 10–20% down on a new car and at least 10% on a used car. That's not a rule—it's a guideline that tends to keep most people in a healthy equity position.

When it makes sense to put more down

• You're financing a longer term (72 or 84 months)
• You have negative equity from a trade rolling into the new loan
• You want a lower monthly payment for budget comfort

When a smaller down payment can make sense

• You found a very low APR incentive and can earn more on your cash elsewhere
• You're keeping cash for emergencies

Even then, try not to roll in taxes and fees on top of a tiny down payment—you'll be upside down the moment you drive off the lot.

Run the numbers

Use the payment calculator to see how a $3,000 vs $6,000 down payment changes your monthly payment and total interest. The difference is often bigger than people expect.

The local angle for Wichita buyers

In Sedgwick County, sales tax on a vehicle runs about 7.5% once the state, county, and city portions add up, and Kansas lets you subtract your trade-in value before that tax is calculated. So a bigger down payment plus a solid trade shrinks both the taxable amount and the amount you finance. If you're buying around Wichita, run your numbers with the local tax rate and a realistic trade value so your down payment goes as far as possible.