What is the proportionality principle in inspections?

• A. All inspections must be conducted within a strict, universal timetable.
• B. Inspection depth and invasiveness should be proportional to risk and materiality.
• C. Invasiveness is determined solely by the inspector's discretion.
• D. Materiality has no bearing on the inspection approach.

Answer: (B)

The main idea is that the depth and intrusiveness of an inspection should be proportional to the risk and materiality of what’s being inspected. In practice, this means you focus more effort on areas with higher risk of misstatement or noncompliance and with greater potential impact on the financial statements or decisions. Conversely, low-risk areas or items with little material impact get lighter touch procedures and less invasive evidence gathering. This approach keeps inspections efficient, fair, and targeted, using resources where they can matter most while minimizing unnecessary disruption for everything else. For example, a complex, high-value transaction or a related-party arrangement would warrant deeper scrutiny than routine, low-value transactions. Thus, the proportionality principle guides the level of inspection to the significance of the issue.