What is a management's expert?
Entities routinely use specialists to prepare figures in the financial statements: actuaries for pension obligations, valuers for investment property, environmental consultants for remediation provisions, tax specialists for transfer pricing. ISA 500.8 governs how the auditor deals with the work of these specialists.
The critical principle is that management cannot delegate responsibility to the expert. ISA 500.A35 makes this explicit: the amounts in the financial statements remain management's responsibility regardless of who produced them. A pension actuary calculates the defined benefit obligation, but management owns the number that goes into the accounts.
ISA 500.8 requires the auditor to evaluate three things about a management's expert: competence and capabilities (does the expert have relevant qualifications and experience for this specific engagement?), objectivity (do any relationships or circumstances create bias?), and adequacy of the work as audit evidence (are the assumptions reasonable, the methods appropriate, the source data reliable, and the conclusions consistent with other evidence?).
ISA 500.A44 adds that the auditor needs enough understanding of the expert's field to evaluate the methods and assumptions used. You do not need to be an actuary. You do need to understand whether a discount rate of 3.2% is within an acceptable range for a eurozone pension obligation.
Key Points
- Management retains responsibility for all amounts, even when a specialist produced them.
- The auditor must evaluate the expert's competence, capabilities, and objectivity under ISA 500.8.
- Using a management's expert does not give management a defence against a misstatement.
- The auditor cannot accept the expert's report at face value — assumptions must be evaluated.
Why it matters in practice
The PCAOB's 2022 inspection report found auditors who evaluated competence but not objectivity separately. An expert can be highly qualified and still have a conflict of interest. The two evaluations are distinct, and ISA 500.8 requires both.
A more common failure: teams test the mathematical accuracy of the expert's model without evaluating the underlying assumptions. Recalculating a discounted cash flow model proves the spreadsheet works. It says nothing about whether the growth rate, discount rate, or terminal value assumptions are reasonable. ISA 500.A44 requires the auditor to understand the methodology well enough to evaluate those inputs.
Worked example: Galway MedTech Ltd.
Client: Irish medical device company, FY2024, revenue €19M, IFRS reporter. Three patents with carrying amount €4.1M.
Management's expert: IP Valuations Ireland engaged to perform IAS 36 impairment test using the relief-from-royalty method. Key inputs: 8% royalty rate (top of Class II range 2%–8%), 14% discount rate (within sector range 12.5%–15.2%).
Key issue: Management's revenue forecast projects 12% growth for Patent A versus a 6% historical average. The only support is a non-binding distribution agreement.
Auditor's challenge: At 6% growth (the historical rate), recoverable amount is €2.0M versus carrying amount of €2.3M, suggesting a potential €300K impairment. The royalty rate at the top of the range further inflates the recoverable amount. The auditor questions why 12% is supportable when the historical evidence shows 6% and the distribution agreement is non-binding.
Resolution: Management adjusts the growth assumption to 8%, supported by a signed (not non-binding) distribution agreement covering two of three territories. Recoverable amount: €2.4M. Carrying amount €2.3M. No impairment required. The auditor accepts the revised figure as falling within a reasonable range.
What reviewers get wrong
The PCAOB found auditors who evaluated competence but not objectivity as a separate consideration. A management's expert who is competent may still lack objectivity if, for example, the expert's fee is contingent on the outcome, or the expert has a long-standing commercial relationship with the client. ISA 500.8 requires both evaluations.
Teams also test mathematical accuracy of the model without evaluating underlying assumptions. Verifying that a formula calculates correctly is necessary but not sufficient. The auditor must evaluate whether the inputs to those formulas — growth rates, discount rates, royalty rates, useful lives — are reasonable in light of the available evidence.
Key standard references
- ISA 500.8: Requires evaluating competence, objectivity, and adequacy of a management's expert's work.
- ISA 500.A34–A48: Application guidance on using the work of a management's expert.
- ISA 500.A35: Management cannot delegate responsibility for the financial statements to an expert.
- ISA 500.A44: Auditor needs sufficient understanding to evaluate the expert's methods and assumptions.
Related terms
Related reading
Frequently asked questions
Is a management's expert the same as an auditor's expert?
No. A management's expert is engaged by the client to help prepare financial statements (ISA 500.8). An auditor's expert is engaged by the auditor to obtain audit evidence (ISA 620). Different ISAs govern each.
Can the auditor just accept a management's expert's report?
No. ISA 500.8 requires evaluating competence, objectivity, and whether the work is adequate as audit evidence. Checking formulas is necessary but not sufficient — the auditor must evaluate underlying assumptions.