How to value a stock: fair value, assumptions and a worked example

Keep enterprise value and equity value separate#

Enterprise-value methods value the operating business before allocating value among financing claims. Equity methods value the common shareholders' claim more directly. Mixing cash flow before debt payments with an equity-only discount rate can produce an inconsistent calculation.

Debt, cash, preferred securities, minority interests and other claims may need adjustments, depending on the method. The simplified example below includes only net debt. It is a teaching model, not a complete template for every company.

A deliberately simple cash-flow example#

Assume a fictional business generates $10.000 million of cash flow available to all capital providers at each year end for five years. After that, it has no remaining value. Use an illustrative 10% annual discount rate. These are invented assumptions, not a forecast.

The formula for each year is cash flow divided by 1.10 raised to the year number. Using unrounded values, the total operating value is $37.908 million. Rounded table rows may not add exactly to the rounded total.

If net debt is $5.000 million and there are 10.000 million common shares, simplified equity value is $32.908 million, or about $3.291 per share. This excludes other claims, taxes on distributions and transaction costs. It is not a recommended trading price.

The assumptions matter more than the decimal places#

The example deliberately assumes the business ends after five years. Most going-concern models instead add a terminal value for cash flows beyond the explicit forecast. That can be a large part of the result and deserves close scrutiny.

A terminal-growth rate must be consistent with the economic assumptions and, in a perpetual-growth formula, lower than the discount rate. Raising growth or lowering the discount rate can increase the estimate substantially without adding any new evidence about the company.

Use several plausible cases and explain why they differ. Do not describe the favourable case as the expected outcome merely because it produces an attractive result.

Use multiples as a cross-check#

If a comparable company's shares trade at twenty times earnings, that does not establish that your company deserves the same multiple. Growth, margins, financing, accounting and risk can differ.

Likewise, a company's historical average may reflect conditions that no longer apply. Our historical-valuation guide explains how to keep periods and definitions consistent.

Finish with an uncertainty note#

Record the source of each historical input, the reason for each forecast assumption and the sensitivity that changes the conclusion most. Include dilution and financing needs where relevant. If small, plausible changes reverse the result, say so.

The useful output is a model you can explain and revise. It cannot determine your personal risk capacity, portfolio allocation or whether you should trade.