When Is a Small Misstatement Not So Small? Materiality Under ISA 450

Consider this. A company reports profit before tax of Rs. 100 million. During the audit, the auditor identifies an uncorrected misstatement of Rs. 100,000 — one tenth of one percent of profit.

At first glance, the amount looks insignificant. But what if that misstatement:

• Helps the company meet a bank covenant?
• Changes a loss into a profit?
• Increases management's performance bonus?
• Conceals a recurring control failure?
• Forms part of several similar errors across different accounts?

This is where ISA 450, Evaluation of Misstatements Identified During the Audit, becomes particularly relevant.

The auditor's responsibilities

Under ISA 450, the auditor is required to:

• Accumulate identified misstatements, other than those that are clearly trivial
• Consider whether identified errors indicate that additional misstatements may exist
• Evaluate misstatements individually and in aggregate
• Communicate identified misstatements to management and request correction
• Reassess materiality when evaluating uncorrected misstatements at the completion stage

Note the phrase "clearly trivial." It is a far lower bar than "below materiality." A misstatement can sit well under the materiality threshold and still be accumulated, evaluated and reported to those charged with governance.

Materiality is not only about the number

A misstatement can be significant because of its nature or circumstances, even when its monetary value is below overall materiality.

An error affecting a regulatory requirement, a loan covenant, management remuneration or an important financial trend may require greater attention than its amount alone suggests. Similarly, several individually small errors may become material when considered together — particularly when they all lean in the same direction.

Direction matters. Small errors that consistently increase profit, or consistently reduce liabilities, say something about how the figures were prepared.

The questions that matter

An auditor should not simply ask, "Is this misstatement below materiality?"

The more meaningful questions are:

• What caused the misstatement?
• Could similar errors exist elsewhere?
• Does it indicate management bias or a control deficiency?
• What is its combined effect with other identified differences?

A Rs. 100,000 difference caused by a one-off posting error is one thing. The same amount caused by a revenue cut-off practice applied every month is another, because the pattern points to a systemic issue whose total size is not yet known.

What this means for management and audit committees

• Expect the auditor to present a schedule of uncorrected misstatements, including items that look small.
• Ask why each misstatement arose, not just how much it is.
• Correct misstatements where practical rather than relying on immateriality; a growing list of uncorrected items is a governance signal in itself.
• Treat any misstatement touching covenants, bonuses or regulatory thresholds as significant regardless of its size.

Key takeaway

Materiality is a judgement about the users of the financial statements, not a threshold beneath which everything disappears. A small number in the wrong place can be the most important finding of the audit.

Reference: ISA 450, Evaluation of Misstatements Identified During the Audit.