Question 3
Question 3
PIN.ca › Q&A › Challenging a Business Valuation in Court
Yes. Every business valuation submitted as evidence in Canadian court can be challenged — and many should be. Here is what actually happens when a valuation is contested, what judges look for, what makes a report survive cross-examination, and what causes one to collapse.
By Eric Jordan, CPPA — International Business Valuation Specialist | Expert Witness (Canada)
Fee Range: $1,500 – $15,000 | Basic Average: $3,500 | 877-355-8004
In This Guide
The Short Answer
The Mohan Criteria: How Courts Decide Whether Expert Evidence Is Admissible
White Burgess: The Duty to the Court
Seven Grounds on Which a Business Valuation Can Be Challenged
What Makes a Valuation Survive Cross-Examination
What Makes a Valuation Collapse Under Cross-Examination
Do You Need a CBV to Testify? What the Law Actually Says
Report Levels: Comprehensive, Estimate, and Calculation in Litigation
When Two Experts Disagree: How Courts Choose
Practical Implications for Business Owners
Frequently Asked Questions
Any business valuation submitted as evidence in Canadian court proceedings can be challenged. The opposing party has the right to challenge the qualifications of the expert who prepared it, the methodology used, the data relied upon, the assumptions made, and the conclusions reached.
A court is never required to accept a valuation simply because it was prepared by a credentialed professional. The credentials of the valuator are relevant to qualification — whether the court will allow the person to testify as an expert at all — but once admitted, the valuation must stand or fall on its own merits. A report prepared by a Chartered Business Valuator can be challenged and rejected. A report prepared by a non-CBV professional can be accepted and relied upon. The designation opens the courtroom door; it does not guarantee what happens inside.
This is not theoretical. Courts across Canada routinely hear competing expert valuations in divorce proceedings, shareholder disputes, oppression remedies, damage quantification cases, and CRA appeals — and routinely prefer one expert's evidence over another, sometimes dramatically.
Before a business valuation can be considered by the court, the valuator must first be qualified as an expert witness. The framework for this qualification in Canada was established by the Supreme Court of Canada in R. v. Mohan (1994). Justice Sopinka set four criteria that expert evidence must satisfy to be admissible:
The Mohan criteria are threshold requirements. If a proposed expert fails any one of them, the court can refuse to qualify the witness and exclude the valuation entirely. The opposing party's counsel will typically conduct a voir dire — a hearing within the hearing — to test the expert's qualifications before the substantive testimony begins.
In 2015, the Supreme Court of Canada refined the Mohan framework in White Burgess Langille Inman v. Abbott and Haliburton Co. Justice Cromwell adopted a two-step analysis for the admissibility of expert evidence:
Step one (threshold admissibility): The proponent must establish the four Mohan criteria. In addition, the court must be satisfied that the expert is aware of and willing to fulfill their primary duty to the court — to provide fair, objective, and non-partisan opinion evidence. If the expert is unable or unwilling to fulfill this duty, the evidence should be excluded at the threshold stage, regardless of the expert's credentials.
Step two (gatekeeper discretion): Even if the threshold is met, the trial judge must conduct a cost-benefit analysis, weighing the potential benefits of the evidence against the risks — including prejudice, confusion, and consumption of time. This is where issues like bias, excessive complexity, and speculative methodology are examined.
What White Burgess changed: Before this decision, expert bias was generally treated as a matter of weight (how much the court should rely on the evidence) rather than admissibility (whether the evidence should be heard at all). White Burgess established that an expert who cannot or will not fulfill their duty to the court can be excluded entirely — not just discounted. This has practical consequences: a valuator who acts as an advocate for the retaining party rather than as an independent expert risks having their entire report excluded.
Once a valuator has been qualified as an expert and the valuation is before the court, the opposing party can challenge the report on any of the following grounds:
Ground 1: Unsupported assumptions
Every valuation is built on assumptions — about future earnings, growth rates, risk factors, discount rates, and the economic life of assets. Each assumption must be grounded in evidence. When a valuator projects 8% annual revenue growth but the business has been flat for three years, opposing counsel will ask: what is the factual basis for this assumption? If the answer is professional judgment with no supporting data, the assumption is vulnerable. If enough assumptions fall, the entire conclusion falls with them.
Ground 2: Flawed or inappropriate methodology
The choice of valuation methodology must be appropriate for the specific business and the purpose of the valuation. Using an earnings multiple approach for an asset-heavy holding company, or relying on the market approach when no genuinely comparable transactions exist, creates an opening for challenge. The valuator must be able to explain why the chosen method is appropriate, why alternatives were considered and rejected, and how the methodology was applied.
Ground 3: Unreliable comparable transaction data
If the valuation relies on comparable sales, every comparable must be examined. Were the transactions conducted at arm's length? Did they involve willing buyers and willing sellers under no compulsion? Were they distress sales, forced liquidations, or transactions between related parties? Comparable transaction databases rarely disclose these circumstances, and much of the data used in private company valuations does not meet the strict fair market value standard required by Canadian courts. A valuator who cannot verify the conditions of each comparable transaction is standing on unstable ground.
Ground 4: Failure to conduct adequate due diligence
A valuation based entirely on financial statements provided by one party, without independent verification, site visit, or corroboration, is vulnerable to challenge. Did the valuator visit the business? Did they interview management and staff? Did they verify that the financial statements accurately reflect the business's actual operations? Did they examine the physical condition of assets? A desk-based valuation that accepts everything it was given at face value will not withstand scrutiny from a competent cross-examiner.
Ground 5: Undisclosed bias or conflict of interest
Following White Burgess, any undisclosed relationship between the valuator and the retaining party is grounds for challenge. This includes prior business relationships, personal friendships, financial dependence on one party for repeat work, and situations where the valuator's fee is contingent on the outcome. Even the appearance of bias can be damaging. Courts have declined to qualify experts who had undisclosed personal relationships with the party who retained them, regardless of the expert's credentials.
Ground 6: Failure to identify and value intangible assets
In any business where intangible assets represent a material portion of value — which, in the modern economy, is most businesses — a valuation that treats all intangible value as a single undifferentiated "goodwill" number is vulnerable to challenge. Opposing counsel can ask: what specifically is the goodwill composed of? How were customer relationships valued? Were operational assets identified? Was the distinction between personal goodwill and enterprise goodwill addressed? A valuator who lumped everything into one number may not be able to answer these questions under oath.
Ground 7: Mathematical, factual, or logical errors
Errors in the report itself — incorrect arithmetic, inconsistent data, transposed figures, facts that contradict the source documents, or conclusions that do not logically follow from the analysis — undermine the credibility of the entire report. One material error discovered on cross-examination calls everything else into question. Two or more errors can be fatal to the expert's credibility.
The compounding effect: These grounds are not independent. A valuation that relies on unverified comparables (Ground 3) prepared without a site visit (Ground 4) using unsupported growth assumptions (Ground 1) and lumping all intangible value into goodwill (Ground 6) does not face four separate challenges — it faces a single, compounding credibility problem. Each weakness amplifies the others. By the time opposing counsel has worked through three or four of these on cross-examination, the court's confidence in the entire report has eroded.
A valuation that withstands cross-examination shares a consistent set of characteristics, regardless of the specific methodology used or the credentials of the valuator:
Every assumption is traceable to evidence. The valuator can point to a specific document, observation, data point, or industry source for every material assumption in the report. Revenue projections are supported by historical trends and documented pipeline. Discount rates are supported by published risk premium data appropriate to the industry and size of business. Growth assumptions are anchored to observable market conditions.
The methodology is explained, not just applied. The valuator can explain in plain language why this method was chosen for this business, what alternative methods were considered and why they were rejected, and how each step in the analysis was performed. A valuation that reads like a black box — inputs go in, a number comes out, and the valuator cannot explain what happened in between — will not survive a competent cross-examiner.
The on-site inspection is documented and substantive. The valuator personally visited the business, observed its operations, assessed the physical condition of assets, identified intangible value drivers through direct observation, and documented their findings. Financial statements tell you what a business earns. An on-site inspection tells you why it earns what it earns and whether those earnings will continue under new ownership. A valuator who can describe what they saw, heard, and observed during a walkthrough has evidence that a desk-based valuator does not.
Intangible assets are individually identified and valued. Rather than presenting a single goodwill residual, the valuator has identified specific categories of intangible assets — customer relationships, brand value, operational processes, workforce, contractual assets — and applied appropriate methodology to each. This is both more accurate and more defensible, because the court can evaluate each component independently.
The report discloses its limitations. No valuation is perfect. A report that acknowledges data limitations, explains how uncertainty was handled, and discloses the range within which the value conclusion might reasonably fall is more credible than one that presents a single precise number as definitive. Courts respect intellectual honesty. They distrust false precision.
The valuator behaves as an officer of the court, not an advocate. The expert answers questions directly, concedes points where appropriate, and does not become argumentative or evasive on cross-examination. An expert who tries to win the argument looks like an advocate. An expert who explains their analysis clearly and accepts reasonable challenges to it looks like a professional helping the court reach a fair outcome. Judges notice the difference.
Business valuation is not a regulated profession in Canada. There is no statutory requirement that a business valuator hold any particular designation. The Canadian Institute of Chartered Business Valuators (CICBV) is a professional organization, not a regulatory body. The CBV designation confirms that a valuator has met the Institute's educational and experience requirements and adheres to its professional standards. It does not create a legal monopoly on valuation testimony.
Under the Mohan criteria, a court qualifies an expert based on demonstrated "special or peculiar knowledge through study or experience" in the subject matter. This knowledge can come from:
Formal academic training in finance, accounting, or economics. Professional designations including but not limited to CBV, CPA, CFA, CPPA, ASA, or CVA. Years of practical experience preparing business valuations. Experience owning and operating businesses in the relevant industry. Prior qualification as an expert witness in related proceedings. Published work, teaching, or recognized expertise in the field.
No single credential is necessary. No single credential is sufficient. A CBV who has never testified, has no experience with the type of business being valued, and cannot explain their methodology under questioning may be less effective than a non-CBV with 20 years of hands-on experience in the relevant industry and a track record of producing valuations that courts have accepted and relied upon.
What this means in practice: If your valuation will be used in court, the relevant question is not "does my valuator have a CBV?" It is: can my valuator explain their methodology clearly under cross-examination? Have they prepared valuations that have been accepted in court before? Do they understand their duty to the court? Are they prepared to be questioned for hours by opposing counsel whose job is to find every weakness in the report? The designation is one factor. It is not the only factor, and it is not always the most important one.
The CICBV recognizes three levels of valuation report, each providing a different degree of assurance and scope of review:
These report levels are defined by the CICBV and apply specifically to CBV practitioners. Valuators operating under other professional standards or without a CBV designation may use different terminology, but the principle is the same: the level of due diligence, independent verification, and analytical rigour in the report determines how defensible it will be under cross-examination. A report with minimal verification is a report with maximal vulnerability.
In most contested valuations, each party retains their own expert, and the two experts arrive at different conclusions — sometimes dramatically different. The court must then decide which evidence to prefer. This is not a simple contest of credentials. Courts evaluate competing expert evidence by examining:
Methodology and reasoning. Is the expert's reasoning transparent? Can each step be followed from premise to conclusion? Does the methodology match the type of business and the purpose of the valuation? Courts generally prefer methodologies that are well-explained over those that are simply asserted as standard practice.
Factual foundation. Is the valuation based on verified facts, or on information accepted without scrutiny? An expert who personally inspected the business, verified the financial data, and identified discrepancies has a factual advantage over one who relied entirely on documents delivered by one party.
Internal consistency. Do the various parts of the report support each other? Are the assumptions consistent with the methodology? Do the financial projections align with the historical data? Internal contradictions — even minor ones — suggest carelessness or result-oriented analysis.
Responsiveness under cross-examination. How does the expert handle difficult questions? An expert who answers directly, acknowledges limitations, and explains their reasoning under pressure is more persuasive than one who becomes evasive, defensive, or combative. Judges assess credibility in real time during testimony.
Independence and objectivity. Does the expert appear to be helping the court or helping one party? Has the expert made appropriate concessions? Has the expert acknowledged the strengths of the opposing expert's position where they exist? An expert who concedes nothing appears partisan. An expert who concedes appropriate points appears fair-minded — and fair-minded experts are more persuasive.
In some cases, the court may accept neither valuation entirely and arrive at its own conclusion informed by elements of both. In other cases, the court may accept one expert's evidence almost entirely and reject the other's. The outcome depends not on which expert has the more impressive title, but on which expert has produced the more defensible, well-explained, and factually grounded analysis.
If you need a valuation for court
Understand before the engagement begins that the report will be subject to cross-examination. The valuator should know this too. Ask them directly: have you testified before? Have your reports been accepted by courts? Are you prepared to be cross-examined? If the answer to any of these questions is uncertain, you need to know that before the report is prepared, not after it has been filed.
If you want to challenge the other side's valuation
Start at discovery, not at trial. The facts underlying the opposing expert's valuation — the financial data they relied on, the assumptions they made, the comparables they used, the instructions they received from counsel — should be examined before you see the final report. Under current rules of civil procedure, the opposing side's preparatory materials, including notes, earlier drafts, and communications with counsel regarding facts and assumptions, may be producible. A well-prepared challenge begins with understanding what the opposing expert was told and what they chose to ignore.
If you receive a valuation you disagree with
Disagreeing with a number is not the same as having grounds to challenge it. Before deciding to contest a valuation, retain your own qualified expert to review the report and identify specific, articulable weaknesses. A challenge based on "I think my business is worth more" will not succeed. A challenge based on "the valuator failed to conduct a site visit, used unverified comparable sales, did not distinguish between personal and enterprise goodwill, and made unsupported growth assumptions" has a factual foundation the court can evaluate.
If both sides have credible valuations
Consider settlement. When both parties have retained competent experts and the gap between the two valuations is within a reasonable range, the cost of a contested hearing — expert fees, legal fees, court time, and the uncertainty of the outcome — often exceeds the gap between the two numbers. Many disputes settle once both parties have credible reports on the table. The reports serve their purpose not by winning in court but by establishing the boundaries within which a fair agreement can be reached.
Yes. The CBV designation confirms educational and professional standards, but it does not make any specific report immune to challenge. Courts regularly hear cases where one CBV's valuation is contested by another expert. The challenge will focus on the methodology, assumptions, data, and due diligence in the specific report — not on the designation itself.
Retaining your own expert to prepare a critique or independent valuation typically costs $5,000 to $25,000 or more, depending on complexity. Legal fees for the contested hearing are additional. When expert and legal fees are combined, the total cost of a contested valuation can range from $15,000 to $100,000 or more. This is why both the strength of the challenge and the amount at stake should be carefully evaluated before proceeding to trial.
From initial retention of competing experts to a trial decision, a contested valuation can take 12 to 24 months or longer, depending on the court's schedule, the complexity of the business, and the broader litigation in which the valuation is embedded. Expert reports are typically exchanged well before trial, and reply reports may follow. The actual testimony and cross-examination at trial may take one to several days per expert.
Yes. The court is not obligated to accept either party's valuation. A judge may accept elements of each report, arrive at an independent conclusion informed by both, or order a new valuation by a court-appointed expert. This is uncommon but not unheard of, particularly when both reports have significant weaknesses.
It can be decisive. A report that reads well on paper can unravel on the witness stand if the expert cannot explain their reasoning, defend their assumptions, or handle unexpected questions. Conversely, a report with acknowledged limitations can be strengthened by an expert who testifies clearly, concedes appropriate points, and maintains credibility throughout the examination. The written report and the oral testimony are both on trial.
A voir dire is a preliminary hearing to determine whether the proposed expert should be qualified to give opinion evidence on the subject matter. Opposing counsel questions the expert about their credentials, experience, methodology, and independence. If the court is not satisfied that the Mohan criteria are met, the expert will not be permitted to testify and the valuation report will not be admitted. This is the first hurdle — and it must be cleared before the substantive evidence is heard.
Prior experience testifying as an expert witness. A track record of preparing valuations that have been accepted by courts. Familiarity with the Mohan criteria and the expert's duty to the court. Willingness to conduct an on-site inspection and perform independent due diligence rather than relying solely on documents provided by one party. Ability to explain the methodology in plain language. And — critically — independence from both parties to the dispute.
Speak Directly With the Valuator
Contact Eric Jordan, CPPA — Expert Witness (Canada)
Toll-free & available 24/7 · Canada-wide
877 355 8004
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© Eric Jordan — International Business Valuation Specialist | Expert Witness (Canada)
PIN.ca — Business Valuation Canada
Contact Eric Jordan, CPPA — Expert Witness (Canada)
Toll-free & available 24/7 · Canada-wide