Lease Tools.  This section will prepare the reader to negotiate the best possible lease payment on their new car. Allowing them to calculate and verify lease terms on the spot, eliminating the car dealer’s Back-End profits.   Contents. Leasing Defined Lease vs. Finance Residuals and Factors Lease End and Fees Leasing Calculators Lease Calculator Money Factor Finder Finder with Drive-Off Lease Payment Checker Lease Cheat Sheet