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Fairness opinion

A fairness opinion is a financial adviser’s stated conclusion on whether the financial consideration in a transaction is fair, from a financial point of view, to a specified constituency.

Entry type: Knowledge article

Field: Valuation and M&A Advisory

Last reviewed: 24 August 2026

Definition

A fairness opinion is a professional opinion, usually delivered to a board or special committee, addressing the financial fairness of transaction consideration to an identified group as of a specified date and subject to stated assumptions and limitations.

Purpose and context

Boards use fairness opinions as one input when evaluating mergers, sales, recapitalizations and transactions involving conflicts or controlling shareholders. The opinion can document that directors received specialized financial analysis, but the board retains responsibility for deciding whether the overall transaction is advisable and consistent with its duties.

Analytical basis

Company analysis

  • Historical performance
  • Management forecasts
  • Capital structure
  • Strategic alternatives

Valuation methods

  • Discounted cash flow
  • Comparable companies
  • Precedent transactions
  • Other relevant analyses

Transaction terms

  • Form and amount of consideration
  • Exchange ratios
  • Financing and conditions
  • Relevant market information

What a fairness opinion does not establish

QuestionNormally covered?Reason
Is the consideration financially fair?Yes, within the stated scopeThis is the central opinion question
Is this the highest obtainable price?Not necessarilyFairness is not the same as process maximization
Is the transaction strategically advisable?NoThe board evaluates strategy and alternatives
Are all legal duties satisfied?NoThat is a legal and governance question
Will forecasts be achieved?NoForecasts are generally assumptions, not guarantees

Independence and governance

Potential conflicts arise when the opinion provider also receives a completion fee, arranges financing or has other relationships with transaction parties. Boards should understand compensation, prior work, information reliance and the adviser’s role. In conflicted transactions, a special committee may retain a separate adviser.

Sources and further reading

View sources and editorial notes
  • FINRA Rule 5150, Fairness Opinions.
  • International Valuation Standards Council, International Valuation Standards.
  • Applicable securities-law disclosure and corporate fiduciary-duty materials.

Editorial note: The legal significance and required disclosure of a fairness opinion depend on jurisdiction and transaction context. This entry is not legal advice.