Audit Risk Model
Detection Risk Allocation
How acceptable detection risk maps to sample sizes and substantive effort across assertions.
Why detection risk allocation matters
Detection risk is the component of audit risk the auditor actively manages, and its allocation directly determines sample sizes and substantive effort under the ISAs and ISSAIs. Mapping acceptable detection risk to procedures across assertions is how an audit team evidences that its testing is calibrated to assessed risk rather than rote. AuditPro Core links each assertion's acceptable detection risk to the resulting sample sizes and substantive work so the audit's resourcing is transparent and defensible.
The Numbers
AuditPro Core renders this view from your tenant's live, tamper-evident records. The figures below are illustrative sample data.
Assertions assessed
12
Low detection risk
5
expanded testing
Planned sample total
1,240
Coverage of population
63%
Sample size by acceptable detection risk
Detection risk to effort
| Assertion | Detection risk | Sample | Est. hours |
|---|---|---|---|
| Existence | Moderate | 210 | 42 |
| Completeness | Low | 265 | 58 |
| Valuation | Low | 230 | 51 |
| Rights & obligations | High | 145 | 26 |
| Cut-off | Moderate | 180 | 35 |
Figures shown are illustrative sample data for demonstration. AuditPro Core renders these views from your own tenant's live, tamper-evident records.
Detection risk
Detection risk is the risk that the auditor's procedures fail to detect a material misstatement that exists. The auditor sets it low where the risk of material misstatement is high, and may accept it higher where that risk is low.
Assertion-level focus
Risk and procedures are most precisely managed at the assertion level, such as existence or valuation, because misstatements attach to specific assertions. Auditing at this granularity avoids over- and under-testing.
Sample size relationship
Lower acceptable detection risk requires larger samples or more persuasive evidence. The relationship is the mechanism by which risk assessment translates into concrete testing effort.
Substantive versus controls reliance
Where controls are tested and relied upon, less substantive work is needed. Detection risk allocation reflects the balance the auditor strikes between controls reliance and substantive procedures.
How AuditPro Core Bridges the Gap
- Assertion mapping: acceptable detection risk is set per assertion and linked to the substantive procedures it drives.
- Sample-size derivation: the model translates detection risk into sample sizes so resourcing follows assessed risk.
- Reliance traceability: allocations show the balance between controls reliance and substantive testing for each assertion.
- Audit-ready justification: the allocation exports to evidence risk-calibrated testing for engagement quality review.
Key Takeaways
- Detection risk is the auditor's lever for managing overall audit risk.
- Manage risk and procedures at the assertion level for precision.
- Lower acceptable detection risk means larger samples or stronger evidence.
- Controls reliance reduces the substantive effort detection risk demands.
See This on Your Own Data
AuditPro Core renders this dashboard from your tenant's live, tamper-evident records — every figure traceable to source.