Bri,
It's been awhile, but it's more of an internal rate of return for the investment in your software.
The investment cost plus installation, is the negative. For the increase in cash flows, you will have to demonstrate how much they will be able to collect faster (speeding up cash flow) per year. If it costs $10,000 and they will collect $3,000 per year faster than before, the payback is 3.3 years before they recoup their investment. Now if you take it for ten years, then that would look like ($10,000) = +$3,000 (yr 1) + $3,000 (yr 2) and so on. Most any calculator will do that, but I still use the HP13.....
Add to it the depreciation write-off of the software (what, divide by 3 years?), and take that on an aftertax basis (use your client's marginal tax rate). I am assuming that the sales are taxed as booked, and this collection process (accounts receivable I believe) is already after tax, so that collection is already taxed, so it comes as a whole number....deduct from year 2(?) your service charge(s) on the software to show the total costs of owning/using it, and net the numbers (remember to reduce the service charges to an after tax basis to compare apples to apples...
You were right, it is a time value of money, and the IRR rate illustrates that, and discounts the cash flows against the initial capital outlay. Your client can compare that to what they would spend on another capital investment to 'rank' it against those, and take the highest returns against the amount of investment capital they have.
Thank you OSU MBA program......if I've made any errors, I'm sure that you good folk will correct me for Bri's sake......or anyone wants to expand on the example...
:gobucks3::gobucks4: