Auto Loan Calculator
Use our auto loan calculator to estimate your monthly car payments, total interest costs, and view your complete amortization schedule. See how different loan terms, interest rates, and down payments affect your total cost.
Car Loan Calculator
How Auto Loans Work
Auto loans are a type of installment loan used to purchase a vehicle. The vehicle serves as collateral for the loan, which means if you fail to make payments, the lender can repossess it.
Most auto loans use simple interest calculations, where interest is calculated based on your remaining loan balance. As you pay down your loan, more of each payment goes toward the principal and less toward interest.
Factors Affecting Your Auto Loan
Credit Score
Your credit score is one of the most important factors lenders consider. A higher credit score typically results in a lower interest rate and better loan terms.
Down Payment
Making a larger down payment reduces your loan amount, which can lower your monthly payments and total interest costs. Most lenders recommend at least 20% down to avoid being 'underwater' on your loan.
Loan Term
While longer loan terms (60-72 months) may offer lower monthly payments, they usually come with higher interest rates and result in higher total costs. Shorter terms (36-48 months) typically have lower rates and cost less overall.
Tips for Getting the Best Auto Loan
- Shop around for financing options before visiting a dealership.
- Get pre-approved for a loan to strengthen your negotiating position.
- Focus on the total cost of the vehicle, not just the monthly payment.
- Avoid extending your loan term just to lower monthly payments.
- Consider refinancing if interest rates drop or your credit score improves.
How to Use Our Auto Loan Calculator
- Enter the vehicle price, down payment, trade-in value (if applicable), and sales tax rate.
- Input your loan term in years and the annual interest rate.
- Click 'Calculate' to see your estimated monthly payment and loan breakdown.
- Review the amortization schedule to understand how your loan balance decreases over time.
This calculator helps you understand the full financial impact of your auto loan, allowing you to make informed decisions about your vehicle purchase.
Auto Loan Examples
Used sedan with 20% down
A buyer is financing a $28,000 used sedan and wants to keep monthly payments comfortably below their transportation budget.
Inputs: $28,000 price, $5,600 down, 5-year term, 6.2% APR, 6% sales tax, no trade-in
Result: The calculator shows how the financed balance, monthly payment, and total interest change after tax is added and the down payment is applied.
This type of example helps you decide whether lowering the purchase price or increasing the down payment creates a more manageable payment.
New SUV with trade-in credit
A household is comparing whether a trade-in meaningfully reduces the cost of upgrading to a new vehicle.
Inputs: $42,000 price, $4,000 down, $8,500 trade-in, 6-year term, 5.4% APR, 7% sales tax
Result: The calculator reduces the financed amount by both the cash down payment and the trade-in value, then estimates the monthly payment and amortization schedule.
Seeing the loan amount before and after the trade-in makes it easier to compare dealer offers and spot long loan terms that hide a high total cost.
Auto Loan FAQ
How much should I put down on a car loan?
Many buyers aim for at least 10% to 20% down. A larger down payment reduces the amount you finance, lowers monthly payments, and can help you avoid owing more than the car is worth early in the loan.
Is a longer auto loan always better because the payment is lower?
Not usually. Longer terms can lower the monthly payment, but they often increase the total interest you pay and keep you in debt longer. Use the calculator to compare monthly affordability against total loan cost.
Should I include taxes and trade-in value in a car loan estimate?
Yes. Sales tax changes the financed amount, and a trade-in can reduce how much you need to borrow. Including both gives you a payment estimate that is much closer to a real dealer worksheet.
What does the amortization schedule tell me?
The amortization schedule breaks each payment into principal and interest. It shows how quickly the balance declines and helps you see how much interest you pay over the full life of the loan.