Calculate The Money Factor/Interest Rate on a Lease This function calculates the Money Factor and the Equivalent Interest Rate on a lease.  Enter the Adjusted Cap Cost, Residual Amount, Lease Term, and Total Rent Charge.  You will find this information on the first page of your lease contract. Click the calculate button to calculate the Money Factor.  Many times people are not aware of the interest rate that they are paying on their lease.  There is no easy way to determine this from looking at the lease contract.  This calculator is a quick way to determine what interest rate you are actually paying. Click the calculator icon to calculate the Money Factor Adjusted Cap Cost:   Residual Amount:    Lease Term in Months:    Money Factor:   Total Rent Charge    Equivalent Interest Rate:   Calculate