A car is often the second-largest purchase people make, and how you finance it matters almost as much as the sticker price. This auto loan calculator turns the vehicle price, your down payment, any trade-in value, the interest rate, and the term into a clear monthly payment and total cost, so you can walk into the dealership knowing your numbers.
How the payment is calculated
Your loan amount is the vehicle price minus your down payment and trade-in value, plus any taxes and fees rolled in. That amount is amortized over your chosen term at your interest rate, producing a fixed monthly payment where early payments lean toward interest and later ones toward principal.
Why loan term is a trap for buyers
Dealers often advertise low monthly payments by stretching the term to 72 or 84 months. That lowers the payment but dramatically raises total interest and increases the risk of being “upside down” — owing more than the car is worth — for years, since cars depreciate faster than long loans pay down.
A worked example
On a $35,000 car with $5,000 down at 7% over 60 months, you finance $30,000 and pay about $594 a month, with roughly $5,600 in total interest. Stretch it to 84 months and the payment falls to about $453, but total interest jumps to roughly $8,000 — and you owe on the car far longer.
Tips for a better car loan
- Get pre-approved by your bank or credit union so you can negotiate as a cash buyer and compare the dealer's rate.
- Keep the term to 60 months or less to limit interest and stay right-side-up on the loan.
- Negotiate the vehicle price separately from the monthly payment — focus on total cost, not the monthly number.
- A larger down payment reduces interest and lowers your risk of owing more than the car is worth.