Buying & Financing
What the car costs to acquire
A monthly payment is the number a dealership leads with, and it is the number that hides the most. The same payment can come from a longer term, a higher rate, a bigger down payment, or a lease whose interest cost is buried in a decimal called the money factor.
These tools take the payment apart. Every term in the formula is printed and editable — price, rate, term, residual, cap cost — so you can see which one is actually moving the number, and what the deal costs in total rather than per month.
The lease payment built from its own parts — cap cost, residual, money factor — set against financing the same car and keeping it.
Monthly payment and total interest on a car loan, with the amortization formula and every term shown.
Work backward from a payment you can live with to the price it actually buys, at your APR and term.