(1) Enter the cost of an item you wish to purchase.
(2) Enter the annual percentage increase in cost for the item(usually 3%).
(3) Enter number of years you wish to set aside for saving.
(4) Enter your tax rate.
(5) Expected annual return on the shortterm investment you've chosen.
(6) Lumpsum amount that you can set aside now.
(7) Choose a monthly savings factor from the chart below.
