How the Auto Lease Calculator works
The single biggest lever in a car lease is the residual value — the car's assumed worth at turn-in. Subtract the residual from the negotiated price and finance the difference; that is what this calculates.
Payment = P × r ÷ (1 − (1 + r)^−n), where P is the amount borrowed, r is the monthly rate (APR ÷ 12) and n is the number of monthly payments.