Key Takeaways
- Materiality is the threshold above which misstatements could influence economic decisions of financial statement users.
- Auditors set planning materiality first, then calculate performance materiality to determine specific audit procedures.
- Common benchmarks include revenue, total assets, profit before tax, and equity—chosen based on what matters most to users.
- Materiality is reconsidered throughout the audit as circumstances change.
What is Materiality in Audit?
Materiality is a fundamental concept in auditing that affects every aspect of an audit engagement. Under ISA 320 (Materiality in Planning and Performing an Audit), materiality is defined as "misstatements, including omissions, are considered to be material if they, individually or in the aggregate, could reasonably be expected to influence the economic decisions of users of the financial statements."
Simply put, materiality helps auditors determine:
- What to audit: Which accounts and disclosures require detailed testing
- How much to test: Sample sizes and the extent of procedures
- What to report: Whether identified misstatements require modification of the audit opinion
Types of Materiality
1. Planning Materiality (Overall Materiality)
Planning materiality is the threshold set at the beginning of the audit to determine the nature, timing, and extent of audit procedures. It represents the maximum tolerable misstatement the auditor is willing to accept.
2. Performance Materiality
Performance materiality (also called "working materiality") is set below planning materiality to reduce the risk that aggregate uncorrected misstatements exceed planning materiality. Typically set at 50-75% of planning materiality.
3. Clearly Trivial Threshold
Misstatements below this threshold are deemed immaterial even in aggregate. The auditor does not accumulate misstatements below this threshold. Typically 1-5% of planning materiality.
How to Calculate Materiality
Common Benchmarks and Formulas
| Benchmark | Typical Percentage | When to Use |
|---|---|---|
| Revenue | 0.5% - 1% | For-profit entities, especially when profit is volatile |
| Total Assets | 0.5% - 1% | Asset-intensive industries (banking, investment companies) |
| Profit Before Tax | 5% - 10% | Stable, profitable companies |
| Equity | 0.5% - 1% | Not-for-profit entities, companies with volatile profits |
| Total Expenses | 0.5% - 1% | When profit is small or volatile |
Example Calculation
Company ABC has the following financial data:
- Revenue: $50,000,000
- Profit before tax: $5,000,000
- Total assets: $30,000,000
- Equity: $15,000,000
Using profit before tax as the benchmark at 5%:
Planning Materiality = $5,000,000 × 5% = $250,000
Setting performance materiality at 60% of planning materiality:
Performance Materiality = $250,000 × 60% = $150,000
Setting clearly trivial at 5% of planning materiality:
Clearly Trivial = $250,000 × 5% = $12,500
Materiality in Different Phases of the Audit
Planning Phase
- Determine planning materiality based on preliminary analytical procedures
- Consider industry norms and regulatory requirements
- Document the rationale for benchmark selection
Execution Phase
- Apply performance materiality to determine sample sizes
- Evaluate identified misstatements against performance materiality
- Consider whether aggregate uncorrected misstatements exceed planning materiality
Completion Phase
- Reassess materiality in light of actual results
- Evaluate the effect of identified uncorrected misstatements
- Consider qualitative materiality factors (e.g., impact on debt covenants, management compensation)
Qualitative Materiality
Auditors must also consider qualitative factors that could make small misstatements material:
- Regulatory compliance: Violations of loan covenants or lending agreements
- Earnings management: Misstatements that mask poor financial performance
- Related party transactions: Undisclosed related party deals
- Subsequent events: Misstatements that occur after year-end but before audit report date
- User perception: Items that would be important to investors, lenders, or regulators
Communicating Materiality to Those Charged with Governance
ISA 260 requires auditors to communicate materiality to those charged with governance (typically the audit committee). This includes:
- The level of planning materiality
- The basis for determining materiality
- Significant judgments made in applying the concept
- Any changes to materiality during the audit
Common Mistakes to Avoid
- Using the wrong benchmark: Don't automatically use profit before tax for companies with volatile earnings.
- Setting performance materiality too high: This increases audit risk and may not provide sufficient assurance.
- Ignoring qualitative factors: Small quantitative misstatements can be material qualitatively.
- Not reassessing materiality: If circumstances change significantly, revisit your materiality calculations.
Conclusion
Materiality is not just a number—it's a professional judgment that affects every phase of the audit. Understanding how to calculate and apply materiality appropriately is essential for conducting an effective audit and issuing reliable audit opinions. The key is to balance professional skepticism with practical judgment, always keeping in mind the users of the financial statements and the decisions they make based on this information.
