Your firm is contemplating the purchase of a new $585,000 computer-based order entry system. The system will be depreciated straight-line to zero over its 5-year life. It will be worth $73,000 at the end of that time. You will save $180,000 before taxes per year in order processing costs, and you will be able to reduce working capital by $88,000 (this is a one-time reduction). If the tax rate is 22 percent, what is the IRR for this project?

NPV = 0 = $585,000 + 88,000 + $166,140(PVIFA_IRR%,4) + [($166,140 + 56,940 88,000)/(1 + IRR)⁵]

IRR = 18.81%

How is this solved using a financial calculator