Auto Loan calculator.
Estimate monthly car payments, total interest, sales tax, fees, trade-in equity, down payment, incentives, and total auto loan cost.
Use the Auto Loan Calculator.
Results update automatically as you type. Add price, APR, term, incentives, down payment, trade-in, taxes, and fees to estimate the real monthly payment and total cost.
Enter your auto loan details
Vehicle and loan
Enter the purchase price, APR, and loan term to estimate the base monthly payment.
Down payment and trade-in
Use trade-in equity and cash down payment to reduce the amount financed.
Taxes and fees
Add registration, title, document, destination, or other estimated purchase fees.
Use Update Loans to refresh the result, Load example to try a sample auto loan, or Clear fields to reset the calculator.
Where your money goes
Principal, interest, tax, fees, and upfront cash.
Amortization preview
First 12 monthly payments after calculation.
Enter loan details to see the payment schedule.
About the Auto Loan Calculator
This auto loan calculator estimates the monthly payment and total cost of financing a car, truck, SUV, or other vehicle. It is designed to go beyond a basic payment estimate by including cash rebates, down payment, trade-in equity, amount owed on a trade-in, sales tax, title and registration fees, and whether taxes and fees are financed or paid upfront.
What this calculator includes
Vehicle price and rebates
The calculator starts with the auto price and subtracts cash incentives or rebates before estimating the amount financed.
Down payment and trade-in
Down payment and positive trade-in equity can reduce the loan. Negative equity from an old loan can increase the amount financed.
State tax treatment
Some states allow trade-in equity to reduce taxable price; others do not. The state selector helps estimate the sales-tax base more accurately.
Amortization preview
The schedule preview shows how early payments split between interest and principal and how the balance declines.
How the monthly car payment is calculated
The calculator uses the standard amortizing-loan formula. The amount financed is based on vehicle price minus incentives, down payment, and trade-in equity, plus any taxes and fees that are included in the loan. The payment is then calculated from the amount financed, APR, and number of monthly payments.
What changed compared with a basic auto loan calculator
This version includes the major inputs commonly used by detailed auto loan tools: auto price, term, APR, cash incentives, down payment, trade-in value, amount owed on trade-in, state/tax treatment, sales tax, title and registration fees, and the option to include taxes and fees in the loan. It also adds a visual cost breakdown and amortization preview.
Trade-in tax treatment
In many states, positive trade-in equity can reduce the taxable sale price. Some states do not allow that reduction, and a few states have no general statewide sales tax. Because rules can vary and local taxes may apply, always compare this estimate with your buyer’s order, lender quote, and state/local tax rules.
How to use the result
Review both the monthly payment and total cost. A longer loan term may reduce the payment but usually increases total interest. A larger down payment, positive trade-in equity, lower APR, cash rebate, or paying taxes and fees upfront can reduce the total cost.
Related calculators
Loan Calculator · Amortization Calculator · APR Calculator · Auto Lease Calculator
Disclaimer: This calculator is for education and planning only. It is not financial, tax, legal, or lending advice. Actual payments, taxes, fees, incentives, trade-in treatment, APR, loan approval, and contract terms can vary by dealer, lender, state, county, credit profile, vehicle, and timing. Review official loan documents before making a purchase decision.
Auto Loan Calculator FAQ
Common questions about car payments, taxes, fees, trade-ins, rebates, and amortization.
What does this auto loan calculator include?
It estimates monthly payment, total loan amount, sales tax, upfront payment, total interest, total cost, trade-in equity, rebates, fees, and an amortization preview.
How is my monthly car payment calculated?
The calculator uses the standard amortizing-loan formula on the amount financed. The amount financed is adjusted for down payment, incentives, trade-in equity, taxes, and fees.
How does trade-in value affect sales tax?
In many states, positive trade-in equity can reduce taxable price. Some states do not apply that reduction, so the calculator includes a state selector for a better estimate.
Should I include taxes and fees in the loan?
Including taxes and fees lowers the cash needed upfront, but it increases the amount financed and usually increases total interest. Paying them upfront usually lowers borrowing cost.
What is an amortization preview?
It shows how each monthly payment is split between interest and principal and how the remaining balance declines over time.
What loan term should I choose?
A shorter term usually means a higher monthly payment but less total interest. A longer term can lower the payment but increase total cost and the risk of owing more than the vehicle is worth.
Is a cash rebate better than a low APR?
It depends on the offer. A cash rebate lowers the vehicle price immediately, while a lower APR reduces interest over the loan term. Compare total cost, not just monthly payment.
Can I use this calculator for used cars?
Yes. Enter the sale price, APR, term, down payment, trade-in amount, estimated taxes, and fees. For private sales, dealer incentives and some dealer fees may not apply.
Does the calculator guarantee my real payment?
No. It is an estimate. Your actual payment depends on lender approval, credit profile, exact tax rules, dealer fees, add-ons, insurance, and final contract terms.