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Internal Audit Function

Unit: Audit & Assurance

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Practice CPA Audit & Assurance Internal Audit Function questions with detailed answers and explanations.

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August 2026

2 Questions
Question 2
​​Premium Ltd. manufactures cleaning detergents for supermarkets and public institutions. The company recently implemented an integrated production and inventory system that automatically records movements of raw materials, work-in-progress and finished goods. The system calculates standard material usage for each production batch and permits authorised adjustments where wastage, spoilage or rework occurs. 

 You are the audit senior at Tumaini & Co., Certified Public Accountants, the external auditors of Premium Ltd. You have been assigned to perform preliminary audit planning procedures and obtain an understanding of the new system before the year-end audit.

During your preliminary review, you noted the following matters: 
 1. User access rights have not been reviewed since the system was implemented. 
 2. Production supervisors can initiate and approve adjustments for wastage and rework. 
 3. Exception reports identifying unusual production quantities and inventory adjustments are generated but are not reviewed by management. 
 4. Finished goods may be released from the warehouse before dispatch documents are matched to approved customer orders. 
 5. The internal audit department has not undertaken a post-implementation review of the system. 

Required: 
(a) Explain THREE control deficiencies in the production and inventory system and, for each deficiency, state its possible effect on the financial statements of Premium Ltd. 

(b) Recommend TWO information technology controls that Premium Ltd. should implement to ensure that access to the system and changes to inventory data are properly restricted and monitored. 

(c) Describe THREE tests of controls that Tumaini & Co. should perform to determine whether wastage and rework adjustments are independently authorised, exception reports are reviewed and followed up, and finished goods are dispatched only against approved customer orders.

(d) Explain TWO benefits that Premium Ltd. would obtain from a post-implementation review of the new production and inventory system.


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Question 3
​​Apex Water Services Corporation is a county-owned entity responsible for supplying water to urban and rural households. The corporation is implementing a meter replacement project funded through the county budget. Internal audit reports indicate delayed follow-up of recommendations, weak monitoring of contractors and possible overpayments for meters that were never installed. The county executive committee has requested guidance on public sector roles, internal audit monitoring and possible recovery of public funds if irregularities are confirmed. 
 
Required: 
(a) (i)  Explain THREE responsibilities of a public sector auditor when auditing the meter replacement project.   
 
(ii) Describe THREE audit procedures that should be performed to verify whether meters paid for under the project were actually installed.   
 
(b) (i) Recommend THREE matters that should be included in a risk-based internal audit plan for the meter replacement project.
 
(ii)  Explain THREE internal audit key performance indicators that the audit committee could use to monitor whether audit recommendations on contractor supervision and meter installation are being followed up.   
 
(c) (i) Discuss TWO asset recovery actions that the county government should consider if the suspected overpayments are confirmed.     
  
(ii) Analyse TWO financial reporting actions that management should take where the confirmed irregularities materially affect the financial statements. 


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April 2026

1 Questions
Question 3
​​Mavuno Ltd. is a rapidly expanding company whose internal audit function currently reports directly to the Finance Director and has recently identified several control weaknesses in the inventory system. The board is considering establishing an audit committee to strengthen oversight and corporate governance structures. The external auditor intends to rely on the work of the internal audit department during the current year’s audit. 
 
Required: 
(a) Explain FOUR functions of an audit committee in strengthening corporate governance. 
 
(b) Discuss FOUR factors that the external auditor should consider before placing reliance on the work of the internal audit function.  
 
(c) Analyse TWO matters that should be included in the management letter to those charged with governance in accordance with ISA 265.   


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December 2025

1 Questions
Question 4b
​​Johanna Ltd. aims to be listed in the Nairobi Securities Exchange. Benjamin Mutie is the chief executive officer and chairman of Johanna Ltd. He appoints and maintains a board of only five executive directors. While the board sets the performance targets for the senior management in the company, no formal targets are set for each director and no review of the board policies is carried out. 

Board salaries are set and paid by Benjamin Mutie based on his assessment of all board members, including himself and not their actual performance. 

Internal controls in Johanna Ltd. are monitored by the senior accountant, although the company assumes that, as external auditors, your firm will carry out a detailed review of internal controls. Johanna Ltd. does not have an internal audit department or an audit committee. Annual financial statements are prepared, providing detailed information on past performance. 

Required: 
(i) Advise Mutie on TWO changes that need to be made to the composition of the board of directors of Johanna Ltd. in order to comply with the corporate governance requirements. 

(ii) Explain to Benjamin Mutie FOUR benefits of setting up an audit committee. 

(iii) Benjamin Mutie would like to set up an internal audit department, but is not sure about measuring the performance of this department. Describe FOUR key performance indicators of an internal audit department.


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August 2025

1 Questions
Question 3b
​​Boresha Ltd. is a medium-sized manufacturing company. The company has recently established an internal audit function to help improve internal controls and operational efficiency. The head of internal audit currently reports directly to the Finance Director. The Finance Director has also asked the internal auditors to assist in the preparation of monthly management accounts and the review of year-end financial statements before they are submitted to the external auditors. 

 Required: 

 (i) Evaluate THREE ways in which the internal audit function could add value to Boresha Ltd’s operations. 

 (ii) Analyse THREE threats to the independence and objectivity of the internal audit function in Boresha Ltd. 

 (iii) For each threat in (b) (ii) above, suggest one suitable safeguard against the threat.


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April 2024

1 Questions
Question 5b
​​Describe FOUR types of audits that an internal auditor might conduct.


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April 2023

1 Questions
Question 3b
​​Kezzia Karimi has recently been appointed as the head of internal audit function in one of the Government Entities. The entity has never had an internal audit function. In this regard, Kezzia has the responsibility of developing an audit charter for approval by the Audit Committee.

Required:
Advise Kezzia on four matters for inclusion to the audit charter to ensure independence of the internal audit function.


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April 2022

1 Questions
Question 1c
​​Evaluate three benefits of an audit committee in a not-for-profit organisation (NGO)


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