Auto Loan Calculator

Auto loan calculator: monthly car payment with sales tax, fees, trade-in and down payment, plus total interest.

Editorial review: Farrow (pseudonym; identity and professional credentials are not disclosed). This page is for educational purposes, not professional advice.

Your inputs

Results update as you type. Nothing you enter leaves your device.

Monthly payment

$670.77

Amount financed: $33,875
Total interest: $6,371
Sales tax: $2,275

Example with the starting values

These results use the calculator's initial inputs. Change the values above to calculate your own estimate.

Inputs

Vehicle price: 35000 $
Down payment: 4000 $
Trade-in value: 0 $
Sales tax: 6.5 %
Title, registration and dealer fees: 600 $
APR: 7 %
Term: 60 months

Results

Monthly payment: $670.77
Amount financed: $33,875
Total interest: $6,371
Sales tax: $2,275

How does the Auto Loan Calculator work?

An auto loan is an installment loan used to buy a car, repaid in fixed monthly payments of principal and interest over a set term.

Amount financed = (price − trade-in) × (1 + sales tax) + fees − down payment. Most states tax only the price after the trade-in credit.

The monthly payment uses the standard amortization formula at your APR and term.

For example, a $35,000 car with $4,000 down, $600 in fees, 6.5% sales tax and a 7% APR over 60 months finances about $33,875 and costs about $671 per month. Actual tax treatment and fees vary by state and dealer.