One of the key components to any buy-sell agreement is the valuation method employed. How will the business, or an ownership interest in the business, be valued for purposes of executing a transaction governed by the buy-sell agreement?
Two valuation methods exist that I will refer to as "simple" valuation methods. The first of these methods is the fixed price method, whereby the owners agree in advance what the valuation will be. Simple? Yes. Accurate? Probably not. Things change daily in business, and that usually means the value of the business is frequently changing. The day after a fixed price is agreed to, events could occur that render that value worthless.
Another "simple" valuation method is to use a pre-defined formula. For example, "the value of the business will be equal to annual revenue times three." This method isn't quite as simple as a fixed price, but is not far from it. Accurate? Possibly. Fair? Hard to say.
Let's consider a situation that could be problematic. Let's say a company formed another business unit that Shareholder A ran by themselves with no input or involvement from Shareholder B. Further, let's assume this business unit and its financial results are not reported separately, where it would be easy to carve this business unit out for purposes of applying the formula. The real question is, though, should the unit and its financial results even be considered if Shareholder B were being bought out? Chances are the two shareholders would have different views of this. Unfortunately, our simple formula provides no guidance in a situation like this.
Simple methods of valuation achieve many desirable objectives. But if the overriding objective of your buy-sell agreement is fairness to all owners, these methods may not achieve the goal.

