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Chapter 113 4

Qualities of audit evidence

1.1 Sufficient appropriate evidence

ISA 500 Audit Evidence requires auditors to ‘obtain sufficient appropriate audit
evidence to be able to draw reasonable conclusions on which to base the audit
opinion’.

Audit evidence

Sufficient (quantity) Appropriate (quality)

Depends on factors such as

Reliable Relevant
 Risk

 Materiality

 Nature of internal control

system Proves one or
more of the
financial
statement
assertions

Source Format

 Auditor generated  Original/written

 Third party  Copy

 Client generated  Oral

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