Using the lease calculator is simple. Enter the total price of your sale (any amount between $3,000 and $100,000 -- for transactions over $100,000 call PA Business Finance Inc. at: 610-594-2122 for special rates. Then select the lease program you want from the pull-down menu and Click the "Calculate Lease" button. The monthly payment options for the lease you chose will be displayed. You can then copy the lease payments into your quote.