Auto Loan Calculator

About the Auto Loan Calculator

Buying a car is one of the largest purchases most people make, and the monthly payment is only part of the story. Our auto loan calculator helps you understand the full cost of financing a vehicle — including total interest paid, the effect of different down payments, and how loan term length affects your monthly budget. Whether you're financing a new Tesla, a used Honda, or a commercial vehicle, this calculator gives you the numbers you need before walking into any dealership.

How It Works

Auto loans use standard amortization. Enter the vehicle price, your down payment or trade-in value, the annual interest rate offered by your lender or dealer, and the loan term (typically 36, 48, 60, or 72 months). The calculator instantly shows your monthly payment and total interest cost. A longer loan term reduces your monthly payment but dramatically increases total interest — a $35,000 car loan at 7% over 72 months costs $7,761 in interest versus $4,498 over 48 months.

Tips & Best Practices

• ✓Get pre-approved by your bank or credit union before visiting a dealership.
• ✓Dealers often mark up interest rates by 1–2% above what lenders actually quote.
• ✓A 20% down payment prevents being "underwater" on your loan as the car depreciates.
• ✓60-month loans are the sweet spot for most buyers between payment size and total cost.
• ✓Avoid 84-month loans — most cars depreciate faster than you build equity.

Who Uses This Calculator

Car buyers use this tool to determine affordability before shopping, to compare dealer financing vs. bank financing, and to evaluate certified pre-owned versus new vehicle economics. A vehicle that costs $45,000 financed at 9% for 72 months has a monthly payment of $807 and costs $58,104 total — information that changes many buyers' decisions about how much to spend.