Auditing and Assurance Standards and Guidance

Auditing Standards (Ireland)

FRC ISAs (UK and Ireland) applicable for periods beginning on or after 15 December 2010 but before 17 June 2016

ISA (UK and Ireland) 540 Auditing, accounting estimates, including fair value accounting estimates, and related disclosures

Requirements
Further Substantive Procedures to Respond to Significant Risks
Estimation Uncertainty
15.For accounting estimates that give rise to significant risks, in addition to other substantive procedures performed to meet the requirements of ISA (UK and Ireland) 330,7 the auditor shall evaluate the following: (Ref: Para. A102)
 (a)How management has considered alternative assumptions or outcomes, and why it has rejected them, or how management has otherwise addressed estimation uncertainty in making the accounting estimate. (Ref: Para. A103-A106)
 (b)Whether the significant assumptions used by management are reasonable. (Ref: Para. A107-A109)
 (c)Where relevant to the reasonableness of the significant assumptions used by management or the appropriate application of the applicable financial reporting framework, management's intent to carry out specific courses of action and its ability to do so. (Ref: Para. A110)
16.If, in the auditor's judgment, management has not adequately addressed the effects of estimation uncertainty on the accounting estimates that give rise to significant risks, the auditor shall, if considered necessary, develop a range with which to evaluate the reasonableness of the accounting estimate. (Ref: Para. A111-A112)
7 ISA (UK and Ireland) 330, paragraph 18.
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