What makes a valuation report defensible
The features that give an independent valuation report credibility if it is later reviewed, from documented assumptions to the independence of the signatory.

A defensible valuation report is one whose assumptions, adjustments and methods are documented clearly enough that a reader, including a tax administration, can trace how the final figure was reached. This requires independence from the company's usual accountant, consistent use of source documents, and a reasoned explanation for every adjustment made to reported figures.
- Every assumption and adjustment should be traceable to a documented source.
- Independence from the company's usual accountant is a structural requirement.
- Using more than one method and explaining any divergence adds credibility.
Defensibility starts with independence
An independent valuation report is not prepared by the company's usual accountant, but by a certified accountant or a company auditor who is not the professional ordinarily responsible for the company's books. This separation exists precisely so that the resulting figure is not seen as produced by someone with an ongoing relationship or interest in a particular outcome.
This structural independence is a starting point, not a guarantee on its own. A report can be prepared by an independent professional and still lack the documentation needed to withstand later scrutiny, which is why independence and thoroughness are both necessary.
Every figure should be traceable to a source
A defensible report clearly identifies where each input figure comes from, whether it is equity and EBITDA taken from filed annual accounts, a comparable company multiple drawn from a specific dataset, or a discount rate built from stated components. A reader should be able to follow the chain from source document to final figure without guesswork.
This includes documenting the annual accounts and shareholders register used, the years covered, and any additional information obtained directly from the company, such as management accounts or explanations for unusual items in a given year.
Adjustments need explicit reasoning
Where earnings are normalised, where director remuneration is adjusted to market terms, or where a discount is applied for a minority stake, the report should state the adjustment, the reason for it, and how its size was determined, rather than presenting only the resulting adjusted figure. A reader should be able to see what was changed and why.
Ter illustratie, an adjustment described only as a normalisation of results, without identifying which specific line item was affected or why, is harder to assess than one that references a specific cost in a specific year, tied to a specific event.
Cross-checking methods strengthens the conclusion
A report that applies a single method to reach its conclusion is more exposed to the weaknesses of that particular method. Applying more than one recognised approach, such as discounted cash flow analysis alongside a multiples-based method, and explaining how the results compare, gives a reviewer confidence that the conclusion is not an artefact of one method's assumptions.
Where the two methods diverge meaningfully, a defensible report explains why, rather than silently favouring the more favourable result without discussion.
Consistency with the reference date and the company's actual position
Since the report is prepared for the 31.12.2025 reference date, all figures, adjustments and comparisons should be anchored to information available and relevant as of that date, rather than reflecting a later period without explanation. A report that mixes information from different periods without clarifying the timeline invites questions later.
Reviewing a draft report before it is finalised
Reading a draft report closely, checking that the underlying accounts and register match what was provided, and asking for clarification on any adjustment that is not fully explained, is a reasonable step before a report is finalised, since it is the shareholder who will rely on it if the figures are ever questioned.
Questions on this
What is the single most important feature of a defensible report
Traceability. Every figure and adjustment should be linked to a specific, identifiable source, whether that is the annual accounts, a supporting document, or a stated reasoning, so the chain from source to conclusion can be followed.
Does independence alone make a report defensible
No. Independence from the company's usual accountant is a structural requirement, but a report still needs thorough documentation and reasoned adjustments to be considered defensible if it is later reviewed.
Should a report always use more than one valuation method
Using more than one recognised method, where the company's profile allows it, and explaining how the results compare, generally strengthens a report's credibility compared with relying on a single method alone.
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This information is general. It does not take your specific situation into account and is not tax advice.