Car Loan Calculator for Your Monthly Payment
This car loan calculator estimates your monthly car payment, total interest, and the full cost of financing a vehicle. Enter the car price, down payment, trade-in, interest rate, and loan term to see exactly what you would pay before you ever walk into a dealership.
It works for both new and used cars and lets you compare financing scenarios side by side — adjust any value and the monthly payment, loan amount, and total interest update instantly. It is built for buyers planning a budget, negotiating a deal, or checking whether a quoted payment is fair.
How a Car Loan Works
A car loan is an installment loan: you borrow a fixed amount and repay it in equal monthly payments over a set term. Each payment splits into two parts — principal, which reduces your balance, and interest, the lender's charge for the loan. Early on, more of each payment goes to interest; as the balance falls, more goes to principal. That shift over time is called amortization, and the calculator maps it out month by month.
How to Use the Car Loan Calculator
Enter the car price
Type the vehicle's total price or drag the slider for quick adjustments. The slider covers a wide range so you can model anything from a budget used car to a luxury vehicle.
Set the down payment and trade-in
Enter the cash you'll pay upfront — the calculator shows it as a percentage of the price automatically. Add a trade-in value if you have one; both reduce how much you need to borrow.
Enter the interest rate
Set the annual interest rate (APR) from your lender using the field or the slider. Real-world rates depend on your credit score and term, so use the figure you've been quoted for an accurate result.
Choose the loan term
Pick how many months you'll take to repay. Tap a preset — 24, 36, 48, 60, 72, or 84 months — or use the slider for any term in between. Shorter terms mean higher payments but far less total interest.
Add sales tax and fees (optional)
Enter your local sales tax rate and any registration, documentation, or dealer fees. These are added to the loan principal so your estimate reflects the real out-the-door cost.
Try an extra monthly payment (optional)
Add an amount you'd pay each month on top of the required payment. The calculator shows the interest you'd save, the time you'd cut off, and your new payoff date.
Features
Accurate Monthly Payment
Calculates your payment with the same standard PMT formula banks and lenders use, so the figure matches a real loan offer.
Down Payment with Percentage
Enter the cash you'll pay upfront and instantly see it as a percentage of the car price, so you can size a sensible deposit.
Trade-in Deduction
Subtract the value of your current vehicle from the price, and it also lowers the taxable amount where trade-ins reduce sales tax.
Sales Tax & Fees
Fold in your local sales tax rate plus registration, documentation, or dealer fees for a true out-the-door cost.
Loan Term Presets
One-tap presets for 24, 36, 48, 60, 72, and 84 months, or fine-tune any term from 6 to 84 months with the slider.
Synced Sliders & Fields
Drag a slider for quick changes or type an exact value — the two stay in sync and results recalculate in real time.
Extra Payment Savings
Add an extra monthly amount to see the interest saved, the time cut off your loan, and a new payoff timeline.
Payment Breakdown Chart
A doughnut chart shows the share of principal versus interest across all your payments at a glance.
Balance Over Time
A line chart tracks how your remaining balance falls month by month until the loan is paid off.
Amortization Schedule
View every payment in a detailed table, switching between yearly and monthly views of principal, interest, and balance.
Multi-Currency Support
Pick from dozens of currencies with locale-aware formatting; the tool auto-detects yours and adjusts default values to suit.
Runs in Your Browser
Every figure is calculated locally with nothing uploaded, so your numbers stay private to you.
Frequently Asked Questions
How do I calculate my monthly car payment?
Enter the car price, down payment, trade-in, interest rate, and loan term, and the Monthly Payment updates instantly. Under the hood it uses the standard PMT formula — M = P × [r(1+r)n] / [(1+r)n − 1], where P is the loan principal, r is the monthly interest rate, and n is the number of payments — the same math lenders use.
What interest rate or APR should I use?
Use the annual rate (APR) your lender has quoted, since real rates depend on your credit score and the loan term. If you don't have an offer yet, try a range — for example 5% to 8% — to see how sensitive your payment is to the rate before you negotiate.
How does the loan term affect my payment?
A longer term spreads the balance over more months, so each payment is smaller — but you pay interest for longer and more in total. A shorter term raises the monthly payment yet cuts total interest. Most buyers land between 48 and 60 months; terms beyond 72 months can lead to owing more than the car is worth.
How much do a down payment and trade-in reduce my payment?
Both the down payment and trade-in are subtracted from the car price before interest is applied, so they directly shrink the amount you borrow and lower every monthly payment. In most regions a trade-in also reduces the taxable amount, cutting your sales tax too. Increase either value to watch the payment drop in real time.
What's included in the loan amount?
The loan amount equals the car price minus your down payment and trade-in, plus sales tax on the taxable amount and any fees you finance. Sales tax is figured on the price after the trade-in is deducted, matching how most jurisdictions tax a vehicle purchase.
How much total interest will I pay, and how do extra payments help?
Total Interest is the difference between everything you repay and the amount you borrowed; you'll see it alongside the Total of Payments. Adding an Extra Monthly Payment sends that money straight to principal, so the calculator shows the interest saved, the time cut off, and your new payoff date — even small extras add up.
What does "Total Car Cost" mean?
Total Car Cost is the complete amount the vehicle ties up: your down payment, the trade-in value you put in, and the sum of all monthly loan payments including interest. It's the clearest single figure for what owning the car through financing really costs you.
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