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US Auto Finance

Auto Loan Calculator

Buying a car? Estimate your monthly payment with Sales Tax, Title Fees, and Trade-In value included.

Vehicle Details

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%
$

Est. $300-$600

$

Trade-In (Optional)

$
$

Enter 0 if paid off

Most states allow this. Uncheck if your state doesn't.

Financing

%

Estimated Monthly Payment

$686

for 60 months

Vehicle Price$35,000
Sales Tax$2,275
Title & Fees$450
Total Financed$34,725
Total Interest$6,433
Total Cost$44,158

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How to calculate "Out the Door" Price?

The "Out the Door" (OTD) price is the total amount you finance. It is calculated as: Vehicle Price + Sales Tax + Doc Fees + Title/Reg - Down Payment - Trade In Credit.Never negotiate on monthly payment; always negotiate on the OTD price.

Trade-In Tax Savings

In most states, trading in your old car reduces the sales tax on your new one. A $10k trade-in could save you $600-$900 in taxes.

APR Impact

Your credit score dictates your APR. A 1% difference in APR on a $30k loan can cost you over $800 in extra interest over 5 years.

Negative Equity

Owe more than your car is worth? This calculator automatically adds that 'negative equity' to your new loan balance.

Auto Finance FAQs

Does trading in a car reduce sales tax?

In most US states (like FL, TX, NY), YES. You only pay sales tax on the difference between the new car price and your trade-in value. This calculator automatically applies this credit.

What is a good APR for a car loan in 2025?

For new cars, a good APR is between 5-7% for excellent credit. For used cars, rates are typically higher (7-10%). Rates above 12% are considered high risk.

Should I take a 72 or 84 month loan?

While longer terms lower your monthly payment, they drastically increase the total interest paid. We recommend sticking to 60 months (5 years) or less to avoid being 'upside down' on your loan.

What does 'Upside Down' or Negative Equity mean?

It means you owe more on your trade-in than it is worth. This calculator handles that by adding the negative equity to your new loan balance (known as rolling it over).

Car Buying Guide

How to Calculate 'Out the Door' Car Price (Tax & Trade-In Secrets)

Financial experts recommend putting 20% down, financing for no more than 4 years, and keeping expenses under 10% of income.

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