A business valuation range: what moves the number, and what would change your decision?

A range should explain uncertainty

A single number can look precise even when the inputs are uncertain. A range can be more informative, but only if readers can see what it represents. Is it a spread of credible methods, alternative trading assumptions or a negotiation position? Those are different ideas.

Ask the valuer to distinguish the central conclusion from sensitivities and to explain why each scenario deserves attention. A wide numerical interval without an evidence trail does little to help an owner decide whether to sell, retain shares or investigate further.

Worked sensitivity: earnings and an illustrative multiple

At an illustrative 4.0× multiple, a £50,000 change in earnings moves enterprise value by £200,000. At £250,000 earnings, a 1.0× change in the multiple moves it by £250,000. This arithmetic highlights which assumptions require investigation. It does not justify the selected multiple or make the corners of the table a formal valuation range.

Carry the analysis through to equity value

Assume, solely for illustration, £150,000 debt and £50,000 genuinely surplus cash, with no other adjustments. A £1 million enterprise value would bridge to £900,000 equity value: £1 million less £150,000 plus £50,000. At the £800,000 enterprise scenario, the same bridge produces £700,000 equity value.

In practice, cash needs, debt-like items, working capital, share rights and the agreed transaction definition require examination. Avoid using all bank cash as surplus or counting the same obligation in more than one adjustment. Enterprise value, whole-company equity and the value of an individual holding should be labelled separately.

Select scenarios around real business questions

• Customer concentration: what happens if renewal timing or margin changes for a major account?
• Owner replacement: does the business need a managing director, salesperson or both?
• Cash conversion: does growth require more stock or longer customer credit?
• Forecast credibility: is the growth supported by signed contracts, a pipeline or a management ambition?

Some assumptions move together. A lost customer may reduce earnings and increase perceived risk. A simple table changing one input at a time cannot fully capture that relationship. Use a combined scenario where it matters and explain the limits of the model.

A combined downside is different from changing one cell

Use the earlier £250,000 earnings and illustrative 4.0× multiple as a starting enterprise value of £1 million. If earnings fall to £200,000 but the multiple is unchanged, enterprise value becomes £800,000. If the same event also leads to an assumed 3.5× multiple, the combined scenario is £700,000.

The combined fall is £300,000, rather than the £200,000 shown by an earnings-only sensitivity. The additional £100,000 reflects the illustrative changed multiple applied to the lower earnings. All multiples here are invented for demonstration, not observed market evidence.

Now ask whether the combination is justified. A customer loss might affect both expected earnings and the risk of the remaining business, but an automatic second penalty could also duplicate a risk already captured. State what each adjustment represents and test whether the same economic effect is being counted twice.

Turn the analysis into an evidence and decision map

Choose a decision threshold explicitly. For example, an owner considering retirement may need to understand whether a plausible outcome supports their plans; a buyer may need to understand whether financing still works under a downside. These are individual financial decisions and require the relevant professional advice, not a generic threshold from this guide.

A sensitivity table is not a probability distribution. Do not describe its middle cell as the “most likely” value or its outer cells as a statistical confidence interval without a model and evidence that support those statements.

Use the range to prioritise evidence

Start with the unresolved item that could change the decision. If replacement management cost dominates the spread, investigate responsibilities and a supportable cost estimate. If a contract renewal dominates the outlook, improve the evidence on timing, probability and profitability before debating decimal places in a multiple.

A useful report connects the range to what can be verified, what remains a judgement and what would cause the assessment to be revisited. It does not promise a sale at the top of the range.