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Effective Sizing of Internal Audit Departments

Companies often struggle to know whether the investments they make in resource allocations for internal auditing are appropriate and effective. This research-based guide provides a model for effective audit department sizing.

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How much of a company’s resources should be allocated to the activity of internal auditing? It is widely accepted that internal auditing is a key element of internal control, and regulators and stock exchange requirements demand the presence of internal auditing for registered companies. Yet, companies often struggle to know whether the investments they make in resource allocations for internal auditing are appropriate and effective. 

The purpose of this research is to develop a conceptual model of internal audit effective-sizing. 

Not all internal audit departments are the same, nor do they have the same mission within their companies. Therefore, simply comparing the size of one internal audit department with another—even in the same industry and the same relative size of company—can give misleading indications as to the appropriate size of an internal audit department. 
 
This study led to development of a conceptual model of internal audit effective-sizing that articulates the key factors that may be tailored to each company’s unique characteristics, mission, personnel, and quality profile. It examines seven critical factors that determine the size of an internal audit department:
  • Characteristics of the company
  • Characteristics of the governance structure of the company
  • The mission of the internal audit department as seen by management, the audit committee, and the internal audit department
  • The internal audit value proposition as executed by the internal audit department
  • The alignment of internal audit with management and audit committee expectations
  • Various characteristics of the internal audit department (e.g., staffing)
  • Internal audit service quality
This model will help organizations better allocate their resources and reflect better alignment between management and audit committee values for internal audit and the delivery of value-added activities.
 
Also available as a Paperback. 
See also: Effective Sizing of Internal Audit Activities for Colleges and Universities 
 
 

Item Number: 10.5013

This download is provided as a service to IIA members.

Learn more about the value of an IIA Membership.

Please note: This secured PDF document does not allow printing.

How much of a company’s resources should be allocated to the activity of internal auditing? It is widely accepted that internal auditing is a key element of internal control, and regulators and stock exchange requirements demand the presence of internal auditing for registered companies. Yet, companies often struggle to know whether the investments they make in resource allocations for internal auditing are appropriate and effective. 

The purpose of this research is to develop a conceptual model of internal audit effective-sizing. 

Not all internal audit departments are the same, nor do they have the same mission within their companies. Therefore, simply comparing the size of one internal audit department with another—even in the same industry and the same relative size of company—can give misleading indications as to the appropriate size of an internal audit department. 
 
This study led to development of a conceptual model of internal audit effective-sizing that articulates the key factors that may be tailored to each company’s unique characteristics, mission, personnel, and quality profile. It examines seven critical factors that determine the size of an internal audit department:
  • Characteristics of the company
  • Characteristics of the governance structure of the company
  • The mission of the internal audit department as seen by management, the audit committee, and the internal audit department
  • The internal audit value proposition as executed by the internal audit department
  • The alignment of internal audit with management and audit committee expectations
  • Various characteristics of the internal audit department (e.g., staffing)
  • Internal audit service quality
This model will help organizations better allocate their resources and reflect better alignment between management and audit committee values for internal audit and the delivery of value-added activities.
 
Also available as a Paperback. 
See also: Effective Sizing of Internal Audit Activities for Colleges and Universities 
 
 

Item Number: 10.5013

Products specifications
SKU 00153-00000000
ISBN 9780894136887
Publication Year 2010
Page Count 69