Systems and controls
Effect of controls on the audit This considers the basic components of control systems and how the auditor fulfils their objectives for assessing control risk. The auditor will ascertain the internal control system to assess whether it is likely to be reliable. If so, they will test the controls to ensure they are in place and working effectively. Impact of tests of controls on the audit strategy and plan The extent of substantive testing to be carried out will depend on the results of the tests of controls which will affect the auditor’s assessment of control risk. If control risk is low The auditor can place more reliance on internal controls and evidence generated internally within the entity. This increases the appropriateness of interim audit testing and allows the auditor to reduce the quantity of detailed substantive procedures performed at the final audit stage. The audit strategy and plan will be updated to reflect that fewer substantive procedures may be required or smaller sample sizes can be tested at the final audit stage. If control risk is high Increase the volume of procedures conducted at and after the year-end. [ISA 330, A2] Increase the level of substantive procedures, in particular, tests of detail. [ISA 330, A2] Increase the locations included in the audit scope. [ISA 330, A2] Place less reliance on analytical procedures as the information produced by the client’s systems is not reliable. Place less reliance on written representations from management if the control environment generally is considered to be weak. Obtain more evidence from external sources e.g. external confirmations from customers and suppliers. Update the audit strategy and plan to reflect the additional testing required at the final audit stage. Limitations of internal controls The auditor can never eliminate the need for substantive procedures entirely because there are inherent limitations to the reliance that can be placed on internal controls due to: Human error. [ISA 315, A54] Ineffective controls. [ISA 315, A54] Collusion of staff in circumventing controls. [ISA 315, A55] The abuse of power by those with ultimate controlling responsibility (i.e. management override). [ISA 315, A55] Use of management judgment on the nature and extent of controls it chooses to implement. [ISA 315, A56] As a result, the auditor must always perform substantive testing on material balances in the financial statements. [ISA 330, 18] 2 Components of an internal control system ISA 315 Identifying and Assessing the Risks of Material Misstatement Through Understanding the Entity and its Environment, states that auditors need to understand an entity’s internal controls. To assist this process it identifies five components of an internal control system: The control environment The control environment includes the governance and management function of an organisation. It focuses largely on the attitude, awareness and actions of those responsible for designing, implementing and monitoring internal controls. [ISA 315, A77] Elements of the control environment that are relevant when the auditor obtains an understanding include the following: Communication and enforcement of integrity and ethical values Commitment to competence Participation by those charged with governance Management’s philosophy and operating style Organisational structure Assignment of authority and responsibility Human resource policies and practices. [ISA 315, A78] When assessing the control environment the auditor may also consider how management has responded to the findings and recommendations of the internal audit function regarding identified deficiencies in internal control relevant to the audit, including whether and how such responses have been implemented, and whether they have been subsequently evaluated by the internal audit function. [ISA 315, A80] Evidence regarding the control environment is usually obtained through a mixture of enquiry and observation, although inspection of key internal documents (e.g. codes of conduct and organisation charts) is possible. The risk assessment process The risk assessment process forms the basis for how management determines the business risks to be managed, i.e. threats to the achievement of ongoing business objectives. These processes will vary depending on the nature, size and complexity of the organisation. [ISA 315, A88] Threats to business objectives can lead to misstatement in the financial statements, e.g. non -compliance with laws and regulations may lead to fines and penalties, which require disclosure or provision in the financial statements. If the client has robust procedures for assessing the business risks it faces, the risk of misstatement overall will be lower. (iii) The information system The information system refers to all of the business processes relevant to financial reporting and communication. It includes the procedures within both information technology and manual systems. The information system includes all of the procedures and records which are designed to: Initiate, record, process and report transactions. Maintain accountability for assets, liabilities and equity. Resolve incorrect processing of transactions. Process and account for system overrides. Transfer information to the general/nominal ledger. Capture information relevant to financial reporting for other events and conditions. Ensure information required to be disclosed is appropriately reported. [ISA 315, A90] (iv) Control activities The control activities include all policies and procedures designed to ensure that management directives are carried out throughout the organisation. Examples of specific control activities include those relating to: Authorisation Performance review Information processing Physical controls Segregation of duties. [ISA 315, A99] Examples of control activities Authorisation – approval of transactions prior to being processed A manager signing off an employee’s timesheet to confirm that the hours stated have been worked and can be paid. This should ensure the employee is not claiming for hours not worked. A manager signing a purchase order to confirm the order can be placed with the supplier. This should ensure that the goods are for a valid business use and
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