Auto Loan Calculator

An auto loan calculator tells you exactly what your car purchase will cost each month and in total. Before stepping into a dealership — where financing is often presented as a monthly payment with the actual rate and term buried in the fine print — knowing your numbers puts you in control of the negotiation.

Your monthly auto loan payment depends on three factors: the loan amount (what you're financing after any down payment), the annual interest rate, and the loan term. Most auto loans run between 36 and 72 months. Longer terms mean lower monthly payments but significantly more interest paid over the life of the loan. A $25,000 auto loan at 5.5% costs about $2,770 in total interest over 5 years — but stretch that to 7 years and the interest cost climbs even as the payment drops.

Dealer financing is convenient, but it's rarely the best rate available. Credit unions and banks often offer auto loan rates 1–2% lower than dealership financing for qualified buyers. That difference on a $30,000 loan over 5 years can save over $800 in total interest. Getting pre-approved before visiting the dealership gives you a rate benchmark and makes you a cash buyer in the lender's eyes.

The amortization schedule below shows every payment over your loan term — how much goes toward interest, how much reduces your principal balance, and what you'll owe after each payment. This is especially useful for understanding when you'll be "right-side up" on the loan — meaning the car's current market value exceeds what you owe. New cars depreciate rapidly in the first 1–2 years, which can briefly put you "underwater" (owing more than the car is worth) if you financed with a small down payment or long term.

GAP insurance is designed for exactly that period of being underwater. Before accepting GAP coverage from a dealership, compare prices — it's often available much cheaper through your auto insurance provider.