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Auto loan calculator

An auto loan calculator estimates your monthly car payment from the price, down payment, trade-in, sales tax, fees, APR and term. It rolls negative equity from a trade-in into the new loan and applies the trade-in sales-tax credit most states offer, so you see the true amount financed.

Negative equity is rolled in.

Monthly payment

$541.53

Amount financed$31,320
Sales tax$1,920
Total interest$7,670
All-in vehicle cost$41,990
Payoff dateJun 2032
Term6 yr
Principal $31,320 Interest $7,670
Balance over time until paid off

How this estimate is calculated

The amount financed is the vehicle price plus sales tax and fees, minus your down payment and net trade-in (trade-in value less anything still owed, which can be negative). Most states tax the price minus the trade-in, which we apply by default. We then amortize the financed amount at your APR over the term to get the monthly payment, total interest and all-in cost.

See our full methodology for assumptions, limits and the 2026 data used.

Sources

Written by
Colson Founder & consumer-finance researcher, ColsonSuperApps LLC
Verified
Every figure checked against its cited primary source
Last updated
June 14, 2026

These results are educational estimates based on the figures you enter and standard financial math, not financial advice or an offer of credit. Your actual rate, payment and terms depend on your credit, lender and other factors. Verify any number with the lender before you act.

Frequently asked questions

How does a trade-in lower my payment?

Its equity (value minus any loan balance) reduces the amount you finance, and in most states it also reduces the taxable price. If you owe more than the trade is worth, that negative equity is added to the new loan instead.

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

A 72- or 84-month term lowers the monthly payment but raises total interest and the time you’re underwater on the car. The calculator shows both, so compare the all-in cost across terms, not just the monthly figure.