SA 530 – Analysing Deviations and Misstatements Found in Samples
## SA 530: What to Do When Deviations or Misstatements Are Found in a Sample
### Two Types of Sample Errors
Term
Used In
Meaning
Deviation
Tests of Controls
Control did not operate as prescribed
Misstatement
Tests of Details
A monetary error in the financial statements
### Step 1: Investigate Nature and Cause
When errors are identified, the auditor should not merely count them. They must investigate:
What is the nature of the error?
What caused it — is it a system issue, human error, or intentional manipulation?
### Step 2: Look for a Common Feature (Pattern Analysis)
A key insight from SA 530: errors may cluster around a common characteristic.
Common features to look for:
Type of transaction
Location / branch
Product line
Time period
If a common feature is found: Identify all items in the population sharing that feature, and extend audit procedures to those items.
### Step 3: Consider Fraud Implications
Intentional deviations or misstatements — especially those with a pattern — may indicate fraud. The auditor must remain alert to this possibility.
### Step 4: Evaluate Effect on Other Audit Areas
Errors in one area may signal issues elsewhere. The auditor must consider whether conclusions in other audit areas need revision.
### Anomalies — The Exception Rule
If an error appears to be an anomaly (isolated, non-representative):
The auditor must obtain a high degree of certainty that it is truly isolated
This requires additional audit procedures to confirm the error does not affect the rest of the population
The auditor cannot simply assume an error is anomalous without evidence
Worked example
### Example 1
Scenario: CA Shubham is auditing Sigma Limited. During tests of controls, he finds deviations in procedures for small-value sales at one specific location. During tests of details on the same population, he also finds monetary misstatements in small-value sales.
Analysis:
The errors have a common feature: small-value sales transactions at one location
SA 530 requires CA Shubham to identify all small-value sales at that location and extend procedures to those items
The fact that both controls AND details show errors increases the risk — it suggests a systemic issue at that location
CA Shubham must also consider whether this could be intentional (fraud at that branch)
He must assess the effect on other audit areas — e.g., revenue completeness, inventory, related provisions
If CA Shubham believes these are isolated (anomalous), he needs strong additional evidence proving the rest of the population is unaffected before treating them as anomalies
⚠️ Common exam mistakes
Treating all sample errors as automatically projectable without investigating whether they have a common feature that limits their scope.
Declaring an error 'anomalous' without performing additional procedures to confirm — SA 530 requires a high degree of certainty, not just a hunch.
Forgetting that intentional errors are a fraud signal — patterned misstatements, especially at specific locations, must prompt fraud consideration.
Failing to reconsider other audit areas after finding errors in one — misstatements in sales could affect accounts receivable, revenue recognition, and related disclosures.
Bare-Act text Nature and Cause of Deviations and Misstatements · SA 530 – Audit Sampling · click to expand
In analysing the deviations and misstatements identified, the auditor may observe that many have a common feature, for example, type of transaction, location, product line or period of time. In such circumstances, the auditor may decide to identify all items in the population that possess the common feature, and extend audit procedures to those items. In the extremely rare circumstances when the auditor considers a misstatement or deviation discovered in a sample to be an anomaly, the auditor shall obtain a high degree of certainty that such misstatement or deviation is not representative of the population.