ToolPony.comDocumentation

Auto loan calculator

Find a car payment or maximum vehicle price with a trade-in, outstanding debt, rebates and taxes.

Get started

  1. Enter the price or switch to a target monthly payment. Add the down payment, net trade-in inputs and any rebates.
  2. Enter your tax and fees. Choose what lowers the tax base and whether to finance the charges, then export the schedule.

Example

Input

30,000 price, 5,000 down, 5% for 60 months

Expected result

471.78 monthly, before tax and fees

Try it

Good to know

The calculation runs in your browser. Use consistent units in fields with no explicit unit.

Calculation method

Enter the tax rate and choose which credits reduce the tax base. If financed, tax and fees are added to principal. A trade-in’s equity is its value minus debt. Results use fixed monthly interest.

P=V−D−(T−O)−R+F,M=Pr1−(1+r)−n,M=Pn  (r=0)P=V-D-(T-O)-R+F,\quad M=\frac{Pr}{1-(1+r)^{-n}},\quad M=\frac Pn\; (r=0)

V is vehicle price, D down payment, T trade-in value, O outstanding trade-in debt, R rebate, and F financed tax and fees. P is the financed principal. M is the monthly payment, r the monthly rate, and n the number of months.

Calculation mode

Find the monthly payment
  • Vehicle price
  • Months
  • Annual rate · %
  • Down payment
  • Trade-in value
  • Debt on trade-in
  • Cash rebate
  • Sales tax · %
  • Registration and other fees
  • Deduct trade-in from taxable price
  • Deduct rebate from taxable price
  • Finance tax and fees
  • Currency
Find the vehicle price
  • Monthly payment
  • Months
  • Annual rate · %
  • Down payment
  • Trade-in value
  • Debt on trade-in
  • Cash rebate
  • Sales tax · %
  • Registration and other fees
  • Deduct trade-in from taxable price
  • Deduct rebate from taxable price
  • Finance tax and fees
  • Currency