Key Audit Matters in the Auditor's Report

The key audit matters (KAMs) section of an auditor’s report is a mandatory disclosure that identifies the most challenging, complex, or significant areas of the financial audit—matters that required the most auditor attention or involved management judgment. First introduced by the International Auditing and Assurance Standards Board (IAASB) under ISA 701 for public-company audits, KAMs make the audit process more transparent by explaining not just whether the numbers are correct, but where the auditor focused its most intensive work.

What Are Key Audit Matters?

KAMs are specific accounting or disclosure issues that met at least two criteria during the audit: they were areas of significant auditor attention (time, risk, judgment, or complexity), and they required interaction with management. The auditor must believe each KAM is relevant enough that communicating it will be useful to readers, particularly the audit committee and investors who want to understand where the audit carried the highest risk or demanded the most scrutiny.

Each KAM disclosure includes three elements: (1) a description of the matter, (2) why the auditor determined it was a key audit matter, and (3) how the auditor addressed it. This third element is crucial—it shows readers the work the auditor actually did to reduce risk and validate the accounting.

When Did KAM Reporting Begin?

The IAASB issued ISA 701 in 2015 to modernize audit reporting and increase transparency. It took effect for audits of entities of public interest for reporting periods ending on or after 15 December 2016. The United States, which has its own standard-setting body (PCAOB), issued a comparable requirement (AS 1701) with an effective date in June 2017. The EU also incorporated KAM-like requirements into its audit regulation. Not all countries or all entity types are in scope—some jurisdictions only require KAMs for listed companies, and others extend them to banks or insurance firms.

The shift reflected a post-financial-crisis appetite for greater audit clarity: investors and regulators wanted to know not only whether auditors had signed off, but what had kept them awake during the engagement.

How KAMs Differ from Emphasis-of-Matter Paragraphs

Before KAM reporting, auditors used “emphasis-of-matter” paragraphs to flag significant matters they wanted users to notice. That mechanism is still available today and serves a different purpose.

An emphasis-of-matter paragraph (sometimes called emphasis-of-scope) addresses a risk or uncertainty that the auditor believes should be prominently visible—for example, a going-concern warning, a major lawsuit, or the adoption of a new accounting standard. It is not a qualification of the audit opinion; it says the audit is clean, but “pay attention to this.”

A key audit matter, by contrast, is focused on the auditor’s work. It answers: “This part of the audit was tough, and here’s how we handled it.” A KAM is not flagging a going-concern risk to users; it is telling users that the auditor spent significant time evaluating whether the company’s going-concern assertion was supported. The emphasis is on audit process, not financial risk per se.

In practice, the same issue can appear as both. A complex revenue contract with unusual terms might be a KAM (auditor judgment required to validate the accounting) and an emphasis-of-matter paragraph (users should understand the accounting choice).

Typical KAM Categories

Most audits include KAMs in one or more of these areas:

• Revenue recognition — Complex contracts, performance obligations, or unusual timing.
• Goodwill and intangible-asset impairment — Subjective valuation models and assumptions.
• Business combinations and acquisition accounting — Valuation of acquired assets, contingent consideration, or fair-value estimates.
• Deferred tax accounting — Judgmental positions on uncertain tax matters or valuation allowances.
• Financial-instrument fair value — Level 3 valuations, credit spreads, or illiquid positions.
• Litigation reserves — Provision adequacy when outcomes are uncertain.
• Pension or post-retirement obligation actuarial assumptions — Discount rates, mortality, salary growth.

The more judgmental the accounting, the more likely it becomes a KAM.

How the Auditor Decides What to Include

The process is not purely mechanical. The auditor assesses each potential KAM candidate by considering:

1. Magnitude — Does the account balance or transaction volume justify the effort?
2. Complexity — Did the auditor apply specialized expertise or models?
3. Judgment — How much accounting discretion did management exercise?
4. Risk — What was the risk of material misstatement before and after audit procedures?
5. Audit effort — Did this area consume substantial time or involve disagreements with management?
6. Relevance to users — Would knowledge of this matter help investors or the audit committee understand the financial statements?

The auditor then discusses the proposed KAMs with the audit committee before finalizing the report. Audit committees have the right to challenge or request additions, though the final KAM list is the auditor’s responsibility.

The Transparency Trade-Off

KAM reporting has increased the length and detail of audit reports—often from 2 pages to 10 or more—and some early critics worried this would reduce the audit opinion’s signal (if everything is flagged, nothing stands out). Evidence so far suggests KAMs have been genuinely useful to institutional investors and audit committees in understanding audit scope and risk.

However, KAM disclosure also creates a subtle incentive: auditors must be careful not to disclose matters that reveal weaknesses in audit procedures or errors in judgment. If an auditor failed to catch a fraudulent contract, that would not become a KAM; instead, KAMs typically focus on areas where auditors did meaningful work. This means KAM reports are not a map of all financial risks—they are a map of where auditors directed their expertise.

Practical Implications

For investors, KAM disclosures offer a window into the auditor’s priorities. Reading a KAM section reveals where management had the most room to influence the financial statements, and where the auditor’s skepticism was most engaged.

For audit committees, KAMs clarify the scope of discussion they should have with both management and the auditor. If a KAM concerns goodwill impairment, the committee should press for detail on the valuation models and assumptions.

For companies preparing for audit, understanding what typically becomes a KAM helps management and audit teams prepare supporting documentation and narratives in advance.

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