Auto Loan Calculator
Calculate your monthly car payment including principal, interest, insurance, maintenance, and depreciation. Compare loan terms, factor in your down payment and trade-in value, and understand the true total cost of owning a vehicle — all free, with no signup required.
Calculate your monthly car payments and total cost of ownership, including insurance, maintenance, fuel, and depreciation.
Calculator Inputs
Enter your values below to calculate results
Total price of the car
Initial payment amount
Annual interest rate
Length of the loan in years
Loan Summary
Key details about your car loan
Amortization Schedule
See how your loan balance changes over time
Cost Breakdown
See how different costs contribute to total ownership cost
Payment Schedule
Detailed view of all payments
| Month | Payment | Principal | Interest | Remaining Balance | Total Monthly Cost |
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How to Use This Auto Loan Calculator
Step-by-Step Guide
Follow these steps to calculate your car payment and total ownership cost
Enter the Vehicle Price
Input the total purchase price of the car you are considering. This is the sticker price or your negotiated price before taxes and fees. If you are still shopping, try different price points to see how they affect your payment.
Set Your Down Payment
Enter the cash amount you plan to put down. A larger down payment means a smaller loan, lower monthly payments, and less interest over the life of the loan. Aim for at least 20% on a new car to avoid being upside down.
Choose Interest Rate and Loan Term
Enter the annual interest rate from your pre-approval or lender quote. Select your loan term — common options are 36, 48, 60, 72, or 84 months. Shorter terms have higher payments but save thousands in interest over the life of the loan.
Review Your Total Cost of Ownership
Examine your monthly payment alongside insurance, maintenance, fuel, and depreciation estimates. The calculator shows you the full picture of what this vehicle will cost, not just the loan payment, so you can make an informed budget decision.
What Affects Your Car Payment
Key factors that determine your monthly auto loan cost
Vehicle Price
The purchase price is the single biggest factor in your payment. Negotiating even $1,000-$2,000 off the sticker price can save you $20-$40 per month and hundreds in interest over the loan term.
Interest Rate (APR)
Your interest rate is determined primarily by your credit score, loan term, and whether the car is new or used. Even a 1% difference in rate on a $30,000 loan can mean $800 or more in additional interest over five years.
Loan Term Length
Longer terms mean lower monthly payments but far more total interest. A 72-month loan can cost you thousands more than a 48-month loan on the same vehicle. Lenders also typically charge higher rates for longer terms.
Down Payment and Trade-In
Both reduce the amount financed. A trade-in may also lower the taxable amount in states that offer tax credits on trade-ins, providing an additional savings beyond the reduction in loan principal.
Understanding Auto Loans
An auto loan is a type of secured installment loan used to purchase a vehicle. The car itself serves as collateral, meaning the lender can repossess it if you fail to make payments. Because the loan is secured, auto loan interest rates are generally lower than unsecured personal loans or credit cards. Understanding how auto loans work will help you negotiate better terms and avoid common pitfalls that can cost you thousands of dollars.
How Auto Loan Interest Works
Auto loans use simple interest in most cases, meaning interest is calculated on the remaining principal balance each day. Your monthly payment is fixed and split between principal and interest. In the early months of the loan, a larger portion of each payment goes toward interest. As the principal balance decreases, more of each payment is applied to principal. This amortization structure is the same one used in mortgages, but auto loan terms are much shorter, so the shift from interest-heavy to principal-heavy payments happens more quickly.
How Dealers Set Rates
When you finance through a dealership, the dealer acts as an intermediary between you and a lending institution. The lender offers the dealer a "buy rate" based on your credit profile, and the dealer is allowed to mark up that rate, typically by 1-2 percentage points, keeping the difference as profit. This is one reason why getting pre-approved at a bank or credit union before visiting the dealership is so important — it gives you a benchmark to negotiate against. If the dealer cannot beat or match your pre-approved rate, you simply use your own financing.
Common Loan Terms and What They Mean
Auto loans are available in a range of terms, most commonly 36, 48, 60, 72, and 84 months. A 36-month loan is the shortest standard term, offering the lowest total interest cost but the highest monthly payment. A 60-month (5-year) loan is the most popular choice, striking a balance between affordability and total cost. Terms of 72 and 84 months have become increasingly common as vehicle prices have risen, but they carry significant risks. With a 7-year loan, you may owe more than the car is worth for most of the loan term, and if the car is totaled or you need to sell, you could be stuck paying the difference out of pocket. Interest rates also tend to increase with longer loan terms, compounding the cost.
New vs Used Car Financing
New car loans typically carry lower interest rates because new vehicles are worth more and depreciate more predictably, making them lower-risk collateral for lenders. Used car rates are usually 1-2% higher, and many lenders set minimum loan amounts and maximum vehicle ages for used car financing. Certified Pre-Owned (CPO) vehicles often qualify for rates closer to new car rates because they come with manufacturer-backed warranties and have passed inspection programs. When comparing a new vs used purchase, consider the total cost including the interest rate difference, not just the sticker price.
The True Cost of Owning a Car
Depreciation: The Biggest Cost
Depreciation is the single largest cost of car ownership, yet most buyers overlook it entirely because it is not a monthly bill. A new car loses approximately 20% of its value the moment you drive it off the lot. By the end of the first year, the average new car has lost 20-25% of its original value. After three years, it has lost roughly 40%, and after five years, it has lost around 60%.
For a $35,000 new car, that means you lose approximately $7,000 in the first year alone and $21,000 over five years to depreciation. Some vehicles hold their value much better than others — trucks and SUVs from brands like Toyota and Honda tend to depreciate more slowly, while luxury sedans and electric vehicles from some manufacturers can lose value faster. Researching a vehicle's projected depreciation before purchasing can save you thousands. Buying a 2-3 year old used car lets someone else absorb the steepest depreciation.
Insurance, Maintenance, and Fuel
Insurance costs vary widely based on your age, driving record, location, and the vehicle itself. Full coverage on a new car typically costs $1,500-$2,500 per year, while liability-only coverage on an older car might be $600-$1,000. Sports cars, luxury vehicles, and cars with poor safety ratings cost more to insure.
Maintenance is relatively low for the first few years when the car is under warranty, averaging $500-$1,000 annually. After the warranty expires (typically 3 years or 36,000 miles for bumper-to-bumper), costs can increase to $1,000-$2,000 per year or more, especially for European luxury brands. Budget for tires ($600-$1,200 every 3-5 years), brakes ($300-$800 per service), and oil changes ($30-$100 each).
Fuelcosts depend on the vehicle's fuel economy, your driving habits, and gas prices. At $3.50 per gallon, a car averaging 25 MPG driven 12,000 miles per year costs about $1,680 in fuel annually. A vehicle averaging 35 MPG would cost about $1,200 for the same mileage. Registration and licensing fees add another $100-$500 per year depending on your state.
Auto Loan Tips and Strategies
Before You Visit the Dealer
- •Get pre-approved first. Visit your bank or credit union before stepping onto a dealer lot. Pre-approval gives you a firm interest rate and loan amount, which serves as powerful leverage during negotiations. Dealers know you can walk away and use your own financing.
- •Negotiate the price, then the financing. Dealers often try to negotiate based on monthly payment, which obscures the actual price of the car. Always agree on the out-the-door price first, then discuss financing terms separately. This prevents the dealer from hiding a higher price inside a longer loan term.
- •Check your credit score in advance. Know your credit score before shopping so you have realistic rate expectations. If your score is below 660, consider spending a few months improving it before applying. Even a small credit score improvement can save you a meaningful amount on your interest rate.
- •Research the car's market value. Use resources like Kelley Blue Book, Edmunds, or NADA Guides to determine the fair market price. Knowing what others in your area are paying for the same vehicle gives you confidence to negotiate and helps you avoid overpaying.
Saving Money on Your Auto Loan
- •Watch for dealer rate markup. Dealers can mark up the interest rate from the lender by 1-2% and keep the difference. If you have pre-approval from a credit union at 5.5%, and the dealer offers 7%, you know there is room to negotiate down or simply use your own financing.
- •Consider Certified Pre-Owned (CPO) vehicles. CPO cars are typically 2-3 years old, have low mileage, pass rigorous inspections, and come with extended manufacturer warranties. They cost 20-30% less than new while offering many of the same protections. The steepest depreciation has already occurred.
- •Keep loan terms to 60 months or less. Shorter terms mean higher monthly payments but dramatically less total interest. A $30,000 loan at 6% costs about $4,800 in interest over 60 months versus $8,600 over 84 months. If the monthly payment on a 60-month term is too high, you may be looking at too much car for your budget.
- •Make extra principal payments. If your loan has no prepayment penalty, adding even $50-$100 extra per month toward principal can save you months on the loan and hundreds in interest. Specify that extra payments should go to principal, not toward future payments.
- •Skip unnecessary dealer add-ons. Extended warranties, paint protection, fabric coating, and VIN etching are high-margin products for dealers. Most offer minimal real value. If you want an extended warranty, you can often buy one later from a third party for less.
Frequently Asked Questions
What credit score do I need for a good auto loan rate?
To qualify for the best auto loan rates, you generally need a credit score of 720 or higher. Borrowers with scores in the 660-719 range can still get competitive rates but may pay 1-3% more than top-tier borrowers. Scores between 600-659 are considered subprime, and you can expect rates significantly higher than prime. Even with a score below 600, you can still get an auto loan, but rates may be 10-20% or more, making the total cost of the vehicle substantially higher.
Should I get a longer loan term for lower payments?
While a longer loan term (72 or 84 months) does lower your monthly payment, it significantly increases the total interest you pay and puts you at risk of being "underwater" on your loan, meaning you owe more than the car is worth. For example, a $30,000 car at 6% interest costs about $580/month over 60 months ($4,800 total interest) versus $460/month over 84 months ($8,600 total interest). Financial experts generally recommend keeping your auto loan to 60 months or less for new cars and 36-48 months for used cars.
How does a trade-in affect my auto loan?
A trade-in reduces the amount you need to finance, which lowers both your monthly payment and the total interest paid over the life of the loan. For example, if you are buying a $35,000 car and trade in your current vehicle for $8,000, you only need to finance $27,000. In many states, you also receive a sales tax benefit because you only pay tax on the difference between the new car price and the trade-in value, saving you several hundred dollars or more.
Is it better to finance through a dealer or a bank/credit union?
Credit unions and banks typically offer lower interest rates than dealerships because dealers often mark up the rate from the lender to earn a commission. Getting pre-approved at your bank or credit union before visiting the dealership gives you leverage to negotiate and a baseline rate to compare against. However, dealerships occasionally offer manufacturer-subsidized 0% or low-rate financing promotions that can beat any bank rate, so always compare both options before signing.
What is the ideal down payment for a car?
Financial experts recommend a down payment of at least 20% for a new car and 10% for a used car. A 20% down payment helps you avoid being upside down on your loan from the moment you drive off the lot, since new cars depreciate about 20% in the first year. A larger down payment also reduces your loan amount, lowers your monthly payment, and may help you qualify for a better interest rate since the lender takes on less risk.
How does depreciation affect my car loan?
Depreciation is the biggest hidden cost of car ownership. A new car loses approximately 20% of its value in the first year and around 60% over five years. If you make a small down payment or choose a long loan term, your car may be worth less than your remaining loan balance, a situation called being "upside down" or having negative equity. This can be a serious problem if you need to sell the car or it is totaled in an accident, as you would still owe the lender the difference.
Can I pay off my auto loan early without penalties?
Most modern auto loans do not include prepayment penalties, meaning you can pay off your loan early and save on interest without extra fees. However, some subprime lenders and buy-here-pay-here dealerships may include prepayment penalty clauses, so always read the loan agreement carefully. Making extra payments toward your principal each month, even small amounts like $50 or $100, can shave months or years off your loan and save hundreds or thousands in interest.
What's the difference between new and used car loan rates?
New car loan rates are typically 1-2 percentage points lower than used car loan rates because new cars hold their value better and represent less risk to the lender. As of recent averages, new car rates range from about 5-7% for well-qualified borrowers, while used car rates range from 7-10%. However, even with a higher rate, a used car can still be the more economical choice because the lower purchase price means less total interest paid, and someone else has already absorbed the steepest depreciation.
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