CalcKDP

Auto Loan Calculator

Estimate your monthly car payment, total interest, and out-the-door cost. Includes sales tax on the vehicle price.

Advertisement (autoloan-top)
$
$
$
Loan Term
%
%

Monthly Payment

$0

  • Principal $0
  • Total Interest $0
  • Sales Tax $0
  • Total Cost (price + interest + tax) $0
Advertisement (autoloan-middle)

How this auto loan calculator works

This tool computes your monthly payment using the standard amortizing-loan formula. The loan principal is:

Principal = Vehicle Price − Down Payment − Trade-in + (Vehicle Price × Sales Tax %)

Note: this is a simple sales-tax model — it taxes the full vehicle price. Some states (e.g. CA, NY) reduce the taxable basis by the trade-in value, while others tax the difference. For a state-accurate quote, check your DMV's worksheet.

For a 60-month loan, longer terms (72, 84 months) lower the monthly but cost much more in total interest. Compare with the term buttons above.

Show the math
Advertisement (autoloan-bottom)