Understand the Discount Rate Used in a Business Valuation

What Comprises the Discount Rate and What’s a Reasonable Range?

The discount rate is the key factor in business valuation that converts future dollars into present value as of the valuation date. For a layperson, the discount rate utilized in a business valuation may appear to be subjective and pulled out of a hat. However, the discount rate is a crucial component of the valuation formula and must be assessed for the specific company at hand.

Using any method under the income approach, the valuation formula comes down to three things:

  1. Ongoing (or expected) cash flow (or other measure of earnings)
  2. Discount rate
  3. Growth rate

In valuations that “feel” too high or too low, one of the potential culprits may be an aggressive discount rate, either on the high or low end. There are several generally accepted methodologies to build up discount rates employed by valuation analysts. In this article, we will examine the various components of a discount rate. Then, we will relate the discount rate to rates of return of other investments that should provide a commonsense road map for what is reasonable and what is not.

What Is a Discount Rate?

Companies with larger cash flows are likely to be more valuable, as are those with cash flows that are growing at a faster rate. Each of these statements makes perfect sense. Now, if the future cash flows are less certain, they are deemed to be riskier, which reduces the value of the business. The discount rate “discounts” future cash flows to a present value. As we have all heard, “a dollar today is better than a dollar tomorrow.” Measuring the present value of future earnings allows us to develop a value for a business today.

The discount rate goes by many names including “equity discount rate,” “return on investment,” “cost of capital,” and “rate of return.” For companies that use debt, the appropriate way to discount cashflows may be the weighted average cost of capital, or “WACC.” Thinking about a discount rate as a rate of return is likely the most intuitive approach.

Returns to an equity investor come after all other parties have been paid. Debt capital providers are paid before equity capital providers, typically at a fixed or floating interest rate (for example, a company’s line of credit could be 4.0% fixed rate or vary, such as 1% over the prime rate). After generating revenue, paying expenses and taxes, and reinvesting funds needed in the business, any remaining cash flow is shared by the equity investors. Because equity investors come last, they require the highest rate of return in order to provide equity capital to a business. Intuitively, this explains why the cost of equity, or “discount rate,” is higher than the cost of debt, or interest rate.

How to Build Up a Discount Rate

Before we delve into what is reasonable and what is not, one must first understand the components of a discount rate as these help the attorney understand how an appraiser estimates this rate. We describe the development of an equity discount rate with a description of each component below.

Risk-Free Rate: As alluded to previously, we would all prefer a dollar today over a dollar tomorrow, which both removes the uncertainty of receipt and quells any potential concerns about lost purchasing power from rising prices. To build up the discount rate, we begin with a base rate called the “risk-free rate,” which compensates for the time value of money. An example of a risk-free rate is the 20-Year Treasury Bond yield as of the valuation date. If an appraisal uses an alternative figure that is materially different than the prevailing rate, the assumption would likely require justification.

Equity Risk Premium: Next, to capture generic market risk for the equity market, appraisers employ an “equity risk premium,” frequently in the range of 4.0% to 7.0%, which captures what an investor would expect for an investment in the equity market over a less risky investment like the bond market. Again, something out of this range would likely require justification. [1]

Beta: The equity risk premium is then multiplied by a selected beta. The beta statistic measures a company’s exposure to market risks, with a beta of 1.0 indicating typical market risk. Low beta companies or industries are less correlated with market risk, while high beta companies are more exposed to market risk. For example: auto dealers and airlines tend to ebb and flow with the economy, doing well when the market is good and declining when economic activity contracts, meaning they tend to have betas of 1.0 or higher. In contrast, grocery stores tend to have a beta below 1.0. When the economy contracts, consumers increase their consumption at grocery stores instead of restaurants to save money. Consumers also need toilet paper regardless of the economic environment, and companies that sell such durable goods (like grocery stores) tend to be lower beta companies.

To this point, we have built up the equity discount rate under the Capital Asset Pricing Model (“CAPM”) for a diversified equity market investment. [2] The risk-free rate plus the equity risk premium (assuming a beta of 1.0) gives a rate of return of approximately 7.0% to 8.0%. This should sound familiar because money managers and retirement planners frequently say equity investors should anticipate investment returns on the order of 7.0%, or something in this range. While Mercer Capital makes no such investment advice, this is a reasonable consideration for large, diversified equity portfolios in the context of building up a discount rate for a smaller private company. However, in recognition of the greater risks inherent in privately held smaller companies, business valuation analysts frequently consider two other sources of risk premia: size and specific company.

Size Premium: Smaller companies tend to be subject to greater issues with concentration and diversification. Smaller companies also tend to have less access to capital, which tends to raise the cost of capital. To compensate for the higher level of risks as compared to the broad larger equity market, appraisers frequently add a premium of approximately 3.0% to 5.0% (or more, for very small businesses) to the discount rate when valuing smaller companies. To get an idea of reasonableness, we can consider the following example. A company valued at over $200 million may seem large, but it is actually relatively small when compared to most publicly traded companies. As such, a size premium would still apply, albeit on the lower end. Valuation analysts source these size premiums from data which provides empirical evidence in support of risks associated with smaller size. This data is updated annually, and providers such as Duff & Phelps are frequently cited.

Specific Company Risk Premium: The final component of a discount rate is the specific company risk premium. This represents the “risk profile” specific to the individual subject company above and beyond the factors above – i.e., what is the required return an investor requires to invest in said company over any other investment?

To illustrate with an example, a soon-to-retire CEO of a small business maintains all client relationships. In assessing the potential risk(s) to the business, we would inquire about and assess the risk of clients leaving when the CEO retires. In addition to the risk of losing clients, there are other risks associated with the departure of a key executive. Valuation analysts refer to these risks as “key person risk,” or “key person dependency.” We would also assess depth of other management and succession planning. A few additional examples, but certainly not all, of company specific risk are shown below: