🚗 Average new car price: $48,644. Average auto loan rate: 7.1%. That's $741/month over 72 months — plus $4,700 in interest alone. Compare loan terms below before signing anything. Car ownership costs keep climbing →

Auto Loan Calculator

Calculate your monthly car payment, view total interest, and compare loan terms side by side.

Loan Details

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Monthly Payment

Monthly Payment
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Loan Amount $0
Sales Tax $0
Total Interest $0
Total Cost $0
Down + Trade-in $0
Amount Financed $0
Payoff Date —

Payment Breakdown

Amortization Schedule

Loan Term Comparison

36 months 48 months 60 months 72 months

New vs Used Interest Rate Comparison

Used car rates are typically 1-2% higher than new car rates. This comparison shows how the rate difference affects your total cost.

New Car Rate Used Car Rate (+1.5%) Difference

How to Use This Auto Loan Calculator

Our auto loan calculator gives you a complete picture of what financing a car will actually cost. Enter the vehicle price, your down payment, trade-in value, sales tax rate, interest rate, and preferred loan term to instantly see your monthly payment, total interest, and total cost of the loan.

The payment breakdown pie chart shows how much of your total cost goes toward principal versus interest. The amortization schedule reveals how your balance decreases with each payment, and the term comparison table helps you pick the right loan length for your budget.

Understanding Your Car Payment

Your monthly car payment depends on several factors that determine how much you borrow and how much interest you'll pay over the life of the loan:

  • Vehicle Price: The sticker or negotiated price of the car. Negotiating the price down even a few hundred dollars reduces both your loan amount and the sales tax you owe.
  • Down Payment: Cash you pay upfront. A 20% down payment is recommended to avoid being underwater on the loan and to secure better interest rates.
  • Trade-in Value: The amount your current vehicle is worth as a trade-in. This reduces the price before sales tax is calculated, saving you money on both the loan and taxes.
  • Sales Tax: Applied to the net vehicle price (after trade-in in most states). Rates vary from 0% to over 10% depending on your state and local taxes.
  • Interest Rate (APR): The annual cost of borrowing. Rates vary based on your credit score, the vehicle condition (new vs used), and the loan term.
  • Loan Term: The repayment period, typically 24-84 months. Shorter terms mean higher payments but less total interest.

Choosing the Right Loan Term

The loan term you choose has a major impact on both your monthly budget and the total cost of the vehicle. A 36-month loan has the highest monthly payment but saves the most on interest. A 72 or 84-month loan lowers your monthly payment significantly but can cost thousands more in total interest — and you may owe more than the car is worth for much of the loan.

Financial experts generally recommend keeping your auto loan to 60 months or less for new vehicles. For used cars, aim for 36-48 months to avoid paying interest on a vehicle that's rapidly depreciating. Use the term comparison table above to see the exact tradeoffs for your specific situation.

New vs Used Car Financing

New car loans typically come with lower interest rates because the vehicle serves as better collateral for the lender. Used car rates are generally 1-3% higher, but the lower purchase price of a used vehicle can offset the higher rate. Consider the total cost of ownership — including depreciation, insurance, and maintenance — when deciding between new and used.

Pre-approved financing from a bank or credit union often beats dealership financing. Get quotes from multiple sources before visiting the dealership, and don't forget to factor in the total cost rather than just the monthly payment when comparing offers.

Frequently Asked Questions

How is a monthly car payment calculated?
A monthly car payment is calculated using the loan amount, interest rate, and loan term. The formula is M = P[r(1+r)^n]/[(1+r)^n – 1], where P is the loan amount (vehicle price minus down payment and trade-in, plus sales tax), r is the monthly interest rate, and n is the total number of monthly payments. Our calculator handles all of this automatically.
What is a good interest rate for a car loan?
A good interest rate depends on your credit score, the vehicle condition, and the loan term. As of 2024-2025, rates for new cars typically range from 4% to 7% for borrowers with good credit (700+), while used car rates are usually 1-2% higher. Excellent credit (750+) can qualify for rates below 5% on new vehicles. Always compare offers from banks, credit unions, and dealerships to find the best rate.
Should I choose a shorter or longer car loan term?
Shorter loan terms (36-48 months) have higher monthly payments but save significantly on total interest and help you avoid being underwater on the loan. Longer terms (60-84 months) offer lower monthly payments but cost more in total interest, and you risk owing more than the car is worth. Financial experts generally recommend keeping auto loans to 60 months or less for new cars and 36 months or less for used cars.
How does a trade-in value affect my car loan?
A trade-in reduces the amount you need to finance, similar to a down payment. The trade-in value is subtracted from the vehicle price before calculating the loan amount. In many states, trading in a vehicle also reduces the sales tax you owe because you only pay tax on the difference between the new car price and the trade-in value. This can save you hundreds or even thousands of dollars.
Is sales tax included in an auto loan?
Sales tax is typically added to the vehicle price and included in the total amount financed. The tax rate varies by state, ranging from 0% to over 10%. Some states tax the full vehicle price, while others only tax the difference between the purchase price and trade-in value. Our calculator applies sales tax to the net price after trade-in to give you an accurate loan amount.
What is the difference between new and used car loan rates?
Used car loan rates are typically 1-3% higher than new car rates. This is because used vehicles depreciate faster and present more risk to lenders. For example, if a new car loan rate is 5.5%, a comparable used car loan might be 7-8%. However, the lower purchase price of a used car often means you'll still pay less in total interest despite the higher rate. Our new vs used comparison tool shows you the exact difference.
How much should I put down on a car?
Financial experts recommend putting at least 20% down on a new car and 10% on a used car. A larger down payment reduces your monthly payments, total interest paid, and the risk of being upside down on your loan (owing more than the car is worth). If you can't afford a significant down payment, consider a less expensive vehicle to keep your total cost manageable.
What is an amortization schedule for a car loan?
An amortization schedule is a table showing every payment over the life of your car loan, broken down into principal and interest. In the early months, a larger portion of each payment goes toward interest. As the loan progresses, more of each payment goes toward reducing the principal balance. This schedule helps you see exactly how your loan balance decreases over time and how much total interest you'll pay.

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