Business professionals reviewing a shareholder agreement, representing valuation clauses in Australian private companies

What lawyers and business owners should specify before a dispute arises.

UPDATED JULY 2026

A valuation clause is a contingency plan for the moment shareholders no longer agree. If it is drafted well, the clause can define a clear process and give an independent expert a workable task. If it is vague, the valuation mechanism becomes a second dispute layered on top of the first.

The most common problem is not the absence of a clause. It is a clause that says shares will be valued at “fair value” or by an “independent accountant” without defining the valuation date, basis, information, discounts, process or output.

KEY TAKEAWAY

"Final and binding" does not cure an incomplete valuation instruction. The clause should define the question before it appoints the person who must answer it.

Why the wording matters

A shareholder agreement is a contract. Where the parties have agreed that an expert will determine a technical issue, Australian courts generally focus on whether the expert performed the contractual task. That makes the task itself critical.

A valuer can apply professional judgement to methodology and evidence, but cannot safely fill every contractual gap. If the clause leaves the basis of value or treatment of a minority interest unresolved, each side may advance a different interpretation and argue that the expert exceeded the mandate.

Ten questions a workable clause should answer

  1. What triggers the valuation? Identify the event precisely: a voluntary exit, death, incapacity, default, deadlock, compulsory transfer, bad-leaver event or agreed buyout. Different triggers may justify different pricing rules.
  2. What exactly is being valued? State the company, class and number of shares, or percentage interest. Clarify whether the task is to value the whole enterprise and derive the subject interest, or value the interest directly.
  3. What is the valuation date? Fix an objective date or a clear formula. Avoid wording such as “at the time of exit” where one party can manipulate timing or where later events may contaminate the analysis.
  4. What is the basis of value? Define market value, fair value, fair market value or another standard. The word “fair” is not self-executing and can imply different treatments in contractual, statutory and accounting contexts.
  5. Do discounts or premiums apply? State the intended treatment of lack of control, lack of marketability, control premiums and special value to an existing shareholder. Silence can materially change the price.
  6. What methodology or assumptions are permitted? Decide whether the expert has full methodological discretion or whether the clause prescribes or excludes particular approaches. Address forecasts, synergies, key-person risk and post-trigger events.
  7. What information must be provided? Give the expert access to financial statements, management accounts, forecasts, contracts, customer data and management. Set deadlines and deal with non-cooperation or incomplete records.
  8. Who appoints the expert and what qualifications are required? Include a fallback appointment mechanism and specify relevant business valuation experience, independence and any professional credentials required for the subject matter.
  9. What procedure must the expert follow? Set timeframes, written submissions, replies, meetings, confidentiality, costs and whether reasons must be provided. A disciplined process reduces tactical delay.
  10. How does the clause interact with other documents? Cross-check the constitution, pre-emption rights, drag and tag provisions, insurance arrangements, employment documents and any buy-sell agreement. Section 140 of the Corporations Act gives the constitution contractual effect in specified relationships.

Ambiguous wording and the disputes it creates

Common wording Likely dispute Better instruction
“Fair value of the shares” Whether the standard is market-based or fairness-based, and whether minority discounts apply. Define the basis of value and expressly address discounts, premiums and special value.
“Value at the date of exit” Which event fixes the date and whether later information can be used. State an exact date or an objective trigger-based formula.
“Determined by the company accountant” Independence, qualifications, role conflict and whether the accountant acts as expert or adviser. Require an independent business valuer and include a fallback nominating body.
“Using normal accounting principles” Accounting standards do not select a business valuation methodology. Refer to recognised valuation methodology and define any contractual assumptions.
“Final and binding except for manifest error” Whether an alleged error concerns judgement, arithmetic or failure to follow the contract. Obtain legal drafting advice and define the expert’s task, reasons and review boundaries carefully.

Expert determination is a contractual role

An expert appointed under a valuation clause is not automatically an arbitrator or an expert witness. The role depends on the agreement and the instructions. The clause should state whether the appointee determines the question as an expert and whether the result is intended to be final and binding, subject to any contractual exceptions.

If reasons are required, say so. If each party may make submissions, define the process. If the expert may obtain independent information or meet management, authorise it. The objective is to reduce the risk that a procedurally sound valuation is later attacked because the clause did not permit the steps required to complete it.

What APES 225 can and cannot do

APES 225 provides a professional framework for members delivering valuation services, including scope, documentation and reporting requirements. It can improve transparency and discipline, but it does not determine the parties’ contractual rights and it cannot repair a defective shareholder agreement.

The engagement letter should identify the valuation service being provided, the purpose, date, interest, basis of value, assumptions, restrictions and intended users. Those terms should be consistent with the shareholder agreement and any joint instructions.

When the dispute has already started

  • Obtain legal advice on the meaning and enforceability of the clause before instructing the valuer.
  • Read the shareholder agreement and constitution together, including all transfer and pre-emption provisions.
  • Agree the uncontested instructions and isolate the genuinely disputed assumptions.
  • Provide alternative assumptions where a factual or legal issue cannot be resolved before the valuation.
  • Use one controlled information set and record all submissions made to the expert.
  • Confirm whether the output required is a valuation report, an expert determination, a single price or a range.

A well-drafted clause cannot prevent every disagreement, but it can prevent the parties from spending months arguing about the rules of the valuation before the valuation itself begins.

Independent valuation for shareholder matters

Expert Business Valuations assists with shareholder buyouts, disputed ownership interests and expert determination processes, subject to the contractual terms and agreed instructions.


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Daniel Callegari, Principal Valuer and Managing Director of Expert Business Valuations

About the author

Daniel Callegari is a Certified Business Valuer, Licensed Business Broker and Principal Valuer of Expert Business Valuations. He works with business owners, accountants, lawyers, investors and intermediaries across SME and lower mid-market valuation matters. His work focuses on maintainable earnings, risk, transferability and evidence-based valuation analysis appropriate to the purpose of each engagement.

Editorial note and disclaimer: This article provides general valuation information and does not constitute legal advice or drafting advice. The enforceability and interpretation of a shareholder agreement depend on the contract, governing law and facts. Obtain advice from an Australian commercial lawyer.
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