An internal control questionnaire (ICQ) is designed to gather detailed information about the operation of specific controls within an organization. It is particularly useful for understanding whether controls, such as adherence to approval matrices, are being followed consistently across different units. ICQs provide a structured way to collect this information from respondents, ensuring that all relevant aspects of the control environment are considered. This method is effective for assessing compliance with established procedures and identifying areas for improvement.

Institute of Internal Auditors (IIA), Practice Guide – Internal Control Questionnaire.