2025-05-13 by Josef Krejčí

Why Valuation Is Not an Exact Science and Why That Is Fine

When someone says business valuation, many people imagine a single precise number that determines exactly what a company is worth. In reality, however, valuation is more of a professional estimate than a mathematical result. And that is perfectly fine.

Contents

1. Why Can a Valuation Not Be Calculated Like the Answer to an Equation?

Business valuation is based on the future -- on income, profits, growth, and risks.

And the future is uncertain. There is no single correct number, but rather an entire range of possible values that depend on:

  • the method chosen (e.g., DCF, market comparison, asset-based method),
  • the source data (quality of accounting, cash flow projections),
  • individual factors (industry, size, risk management).

Different appraisers may arrive at different numbers for the same company -- and all of them may be right. What matters is that the valuation makes sense in context and corresponds to actual conditions.

2. What Affects the Result?

Typical examples of uncertainty in valuation include:

  • Discount rate: A small change has a large impact on the result.
  • Cash flow projections: Even a small inaccuracy in growth estimates can change the value by tens of percent.
  • Risk premium: Different perspectives on the riskiness of the industry or company.
  • Growth rate in the continuing value (the so-called perpetuity): Even tenths of a percentage point difference in the assumed long-term growth rate have a significant impact on the overall business value.

For example, a company where we expect long-term growth of 1.5% may have a significantly lower value than a company where we assume 2.5% growth, even though they are otherwise financially identical. This difference is most pronounced in the so-called terminal value, which often accounts for the majority of the resulting valuation.

3. Why Is That Fine?

The goal of valuation is not to find absolute truth but to provide a substantiated estimate that helps in decision-making:

  • Planning to sell the company? It helps set price expectations.
  • Considering investor entry? The valuation supports your arguments.
  • Settling between partners? You have a fair basis.

4. How Do We Approach This at eval.cz?

Our solution generates a business value estimate based on a combination of methods, projections, and data. We strive for maximum transparency so that you understand what the result is based on.

We do not claim to be infallible appraisers. But we believe that even a solid estimate has great value if it is fast, accessible, and understandable. Want to know what your company might be worth?

Try the free approximate business value estimate in our business value calculator.


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