Auto Loan Calculator
Estimate monthly car payments with price, down payment, trade-in, sales tax, fees, APR, and term. Private browser-side calculator.
Added May 4, 2026
Scenario A
Input
Result
Enter a value for vehicle price to see your result.
How it works
Estimates a monthly car payment by combining vehicle price, down payment, trade-in value, sales tax, fees, interest rate, and loan term.
Formula
Amount Financed = Vehicle Price + Tax + Fees − Down Payment − Trade-in Monthly Payment = P × r / (1 − (1 + r)^(−n))
- P
- Amount financed
- r
- Monthly interest rate (annual rate ÷ 12 ÷ 100)
- n
- Loan term in months
Step by step
- 01Subtract trade-in value from the vehicle price for the taxable base.
- 02Add estimated sales tax and fees, then subtract down payment and trade-in value.
- 03Convert the annual interest rate to a monthly rate.
- 04Use the standard amortized loan formula to calculate the monthly payment.
Examples
$32,000 car, $4,000 down
After trade-in, tax, fees, and down payment, the financed balance is about $28,600.
Inputs
- Vehicle price:
- 32000
- Down payment:
- 4000
- Trade-in value:
- 2000
- Sales tax rate:
- 8
- Fees:
- 700
- Annual interest rate:
- 7.5
- Loan term:
- 60
Result
- Monthly payment:
- 588.75
- Amount financed:
- 28600
Frequently asked questions
Does trade-in reduce tax?
This tool assumes tax applies after trade-in. Rules vary by jurisdiction, so confirm local treatment.
Are insurance and registration included?
Only fees you enter are included. Insurance, maintenance, and fuel are separate ownership costs.