Leaving money on the table
by Zach ~ October 13th, 2009While finishing my undergrad, I started a small business doing computer hardware, software, and networking support for clients in and around Ann Arbor. I would occasionally make house calls to help people clean up and speed up their old computers, but most of my business was through commercial service contracts. This company was a successful and profitable experience, and was really an excellent learning experience for me while I completed my studies, but the most important lesson didn’t come until just today while sitting in my Venture Capital Finance class with Professor David Brophy.
Time = Money
The core concept to understand thus far from my Finance classes is the Time Value of Money. This essentially means how much money is worth today in comparison to the future. Take the very basic example where you put $100 in the bank, and they pay you 8% interest (good luck!). At the end of one year, you’d have $108. At the same time, you need to take into consideration the risk of inflation lowering the value of your money. Inflation is the idea that as time goes by, the price of things increases. The delicious box of Cheez-Its you bought in 2008 for $3 might now cost $3.12. This would be an example of 4% inflation. If you combine the 8% interest rate the bank pays you and the 4% price of inflation, your real interest rate is approximately (but not exactly) 4%. This might seem rudimentary to you but it’s an important underpinning in the lesson I learned today in class.
What’s it worth to ya?
As I was wrapping up my degree, I decided to move on from my small business, and close up shop. I’d been working closely w/ a local friend and colleague, and when the time came, I transitioned my main account over to him, just to be sure my client continued to get the same quality of service I always provided to them. But what never even crossed my mind is the value of future income I was giving up.
Perpetual Motion
Perpetuity is a payment that you continue to receive indefinitely. Sort of like what I feel my landlord gets from me each month. In the case of my service contract, we’ll say my profit on the contract was $10,000 per year, and we’ll assume the inflation rate was approximately 4%. So, what if I kept getting $10,000 profit every year, forever? How much would that be worth if you were to put a present-day value on it? Let’s take a look at the formula for a perpetuity, Present Value = Payment / Discount Rate. Plugging in our numbers, PV = $10,000/.04, or $250,000. Now obviously it’s not really practical to think of a service contract as lasting indefinitely, but this helps us to understand a bit of how businesses are valued.
Another way to look at the problem is to presume a certain lifespan for the deal, say 3 years. So what is it worth to get $10,000 in one year’s time, another $10,000 after the second year, and $10,000 after the third? We just need to discount the future payments using a simple formula. Present Value = Future Value / (1 + r)^n where r is the discount rate and n is the number of periods you need to discount. Plugging in all of our numbers into this formula we get:
$10,000 + $10,000 + $10,000 = $27,750.91.
(1.04)^1 (1.04)^2 (1.04)^3
So why’d I take you through all of this? Basically, when I gave the client to my friend, I was giving up somewhere between $27,750 and $250,000 worth of value.
The moral of the story is to always consider the present value of future money.




