Car Loan Calculator

Calculate your monthly car loan payment and total cost, including down payment, trade-in, and tax, with an amortization schedule.

100% Browser-Based • Local Processing
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mo

An estimate, not a finance offer. Dealer fees, registration, extended warranties and any add-ons sold in the finance office are not included, and 0% promotional deals often replace a cash rebate you would otherwise get.

Payment each month

583.10

Amount financed 29,100.00
Sales tax 2,100.00
Total interest 5,886.26
Total cost of the car 37,986.26
Formula and working

The formula

financed = price + tax − down − trade-in, then the standard amortized payment

Your numbers

Waiting for your numbers.

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Privacy Focused

🔒 Local Processing. Your numbers never leave your device.

Instant Results

🌐 Fully Client-Side. Runs instantly in your browser.

No Signup

⚡ No accounts. No API keys. Just open and use.

Browser Based

🚀 No installs, no sign-ups, no server round-trip.

Overview

What is a Car Loan Calculator?

A Car Loan Calculator works out the monthly payment on an auto loan. From the vehicle price, down payment, trade-in value, sales tax, interest rate, and term, it calculates the amount financed and the monthly payment, plus total interest and cost — using the standard amortized-loan formula. It runs privately in your browser.

A car's monthly payment depends on more than the sticker price — your down payment, any trade-in, sales tax, the interest rate, and the loan length all change it. Getting the real figure before the dealership helps you negotiate and budget.

This calculator builds the financed amount from those inputs and gives the monthly payment, total interest, and a schedule. It runs entirely in your browser, so your numbers stay private.

Guide

How to calculate a car payment

Step 1: Enter the vehicle price, your down payment, and any trade-in value

Enter the vehicle price, your down payment, and any trade-in value.

Step 2: Add the sales tax rate, the loan's interest rate, and the term

Add the sales tax rate, the loan's interest rate, and the term.

Step 3: Read the monthly payment, total interest, and total cost

Read the monthly payment, total interest, and total cost.

Screens

Car Loan Calculator in action

Car Loan Calculator showing the monthly auto payment in the browser.
Payment + totals
Car loan with down payment, trade-in, and tax.
Trade-in/tax
Calculating a car payment on a phone, no app installed.
Mobile (stacked)
Details

What goes into the car payment

The amount you finance is the vehicle price plus sales tax, minus your down payment and any trade-in value. The monthly payment then uses the same amortized formula as any loan — M = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1] — on that financed amount, where r is the monthly rate and n the number of payments. A few practical notes: a larger down payment or trade-in lowers the financed amount and therefore the payment and total interest; a longer term lowers the monthly payment but raises the total interest you pay, so a cheap monthly figure can cost more overall. Sales tax handling varies by region — some places tax the full price, others tax the price after the trade-in is deducted — so set it to match your location for accuracy. The calculator also shows the amortization so you can see the interest you pay over the term. Honest caveat: it estimates the principal-and-interest payment; dealer fees, extended warranties, gap insurance, and registration aren't included, and rates depend on your credit — so treat it as a strong estimate, not a final quote, and it isn't financial advice. Everything computes locally. For homes use the Mortgage Calculator; for any loan, the Loan Calculator.

Support

Frequently Asked Questions

How is a car loan payment calculated?

On the amount financed — the price plus tax, minus down payment and trade-in — using the amortized-loan formula M = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1], where r is the monthly rate and n the number of payments. The calculator works out the financed amount and the payment, and shows the total interest.

How does a trade-in affect the payment?

A trade-in reduces the amount you need to finance, just like a larger down payment, which lowers both your monthly payment and the total interest. Enter the trade-in value and the calculator subtracts it (along with your down payment) from the taxed price to get the financed amount.

Should I choose a longer loan term for a lower payment?

A longer term lowers the monthly payment but increases the total interest you pay, and you may owe more than the car is worth for longer. The calculator shows total interest for each term so you can weigh a comfortable monthly payment against the overall cost.

Is sales tax included in the calculation?

Yes, if you enter it. The calculator adds sales tax to the financed amount. Note that tax rules vary — some regions tax the full price, others the price after a trade-in deduction — so set the tax to reflect how your area handles it for the most accurate result.

What's not included in this estimate?

Dealer documentation fees, registration, title, extended warranties, and gap insurance aren't included, and your actual rate depends on your credit and lender. So the figure is a close estimate of the loan's principal-and-interest payment, not the full out-the-door cost — confirm the complete total and APR with the dealer.

Is this car loan calculator financial advice?

No. It estimates payments from the numbers you enter and doesn't account for your finances, the dealer's exact terms, or whether the purchase is wise. Use it to compare scenarios and prepare to negotiate, and consult a financial professional for advice on financing a vehicle.

Is it free, and do I need to sign up?

Yes, it's completely free with no account, no trial, and no limit on how many times you use it. It runs entirely in your browser, so there's no sign-in wall — just open the page and calculate.

Is my data private?

Yes. Everything is calculated in your browser — the numbers you enter are never sent to a server, and nothing is stored once you close the tab. That keeps any personal figures (salary, loan, health) on your own device.

Does it work on mobile?

Yes. It runs in your phone's browser with nothing to install, so you can calculate on Android or iOS. The layout adapts to small screens, so entering numbers and reading the result is easy on the go.

Does it work offline?

Once the page has loaded, the calculation runs entirely on your device, so it keeps working without a connection. You only need to be online to open the page the first time — which is also why nothing you enter is uploaded.

Can I copy or share the result?

Yes. You can copy the result to your clipboard with one click, and many results can be shared. Because everything is calculated locally, copying is instant with no upload step.

How accurate is it, and is this professional advice?

The math is accurate for the inputs you give, and the formula is shown so you can verify it. But results are estimates for general use, not professional advice — finance calculators use simplified assumptions and ignore fees and rate changes, and health calculators are general estimates, not medical advice. For important decisions, consult a qualified professional.

Still have questions?

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