How Single Audits combine financial statement audits, Yellow Book reporting, SEFA procedures, and major-program compliance testing for federal awards.
A Single Audit is a federal-award audit framework for nonfederal entities that expend federal awards above the applicable threshold. It combines a financial statement audit with compliance testing over major federal programs.
For current-period exam study, treat the threshold as period-sensitive. For fiscal years beginning on or after October 1, 2024, the Single Audit threshold is generally $1,000,000 of federal awards expended. For earlier fiscal years, the prior $750,000 threshold may still be relevant.
flowchart TD
A["Federal awards expended during fiscal year"] --> B{"Meets applicable Single Audit threshold?"}
B -- "No" --> C["No Single Audit required under Subpart F, but records remain subject to review"]
B -- "Yes" --> D["Prepare financial statements and SEFA"]
D --> E["Financial statement audit under GAAS and Yellow Book"]
D --> F["Major-program compliance audit under Uniform Guidance"]
E --> G["Financial statement opinion and Yellow Book report"]
F --> H["Opinion on compliance for major programs"]
H --> I["Schedule of findings and questioned costs"]
Single Audits are designed to give federal agencies, pass-through entities, and other users a coordinated audit over financial statements and federal-award compliance. Instead of separate audits for every award, the auditor uses a risk-based approach to select major programs for compliance testing.
| Component | Purpose |
|---|---|
| Financial statement audit | Determine whether the entity’s financial statements are fairly presented. |
| Yellow Book reporting | Report on internal control over financial reporting and compliance matters required by Government Auditing Standards. |
| SEFA procedures | Report whether the Schedule of Expenditures of Federal Awards is fairly stated in relation to the financial statements. |
| Major-program compliance audit | Test whether major programs complied with direct and material compliance requirements. |
| Findings and questioned costs | Communicate significant compliance and control issues. |
The Single Audit does not audit every transaction in every federal program. It focuses detailed compliance testing on major programs.
The threshold is based on federal awards expended during the fiscal year, not federal awards received, budgeted, or promised.
| Fiscal-year timing | General threshold |
|---|---|
| Fiscal years beginning before October 1, 2024 | $750,000 of federal awards expended |
| Fiscal years beginning on or after October 1, 2024 | $1,000,000 of federal awards expended |
The entity may be a recipient, subrecipient, and contractor at the same time. Federal awards expended as a recipient or subrecipient count for Single Audit purposes. Payments for ordinary goods or services as a contractor generally do not count as federal awards expended.
The auditor does not test all programs equally. Uniform Guidance uses a risk-based approach to identify major programs.
Major-program selection considers:
Once a program is selected as major, the auditor tests compliance requirements that could have a direct and material effect on that program.
The auditor uses the applicable program rules and compliance requirements. Common categories include:
| Requirement | What the auditor tests |
|---|---|
| Activities allowed or unallowed | Whether the award paid only for permitted activities. |
| Allowable costs | Whether costs were allowable, allocable, reasonable, and documented. |
| Cash management | Whether drawdowns and cash balances complied with award rules. |
| Eligibility | Whether beneficiaries, participants, or subrecipients met program criteria. |
| Period of performance | Whether costs were incurred within the authorized period. |
| Procurement | Whether purchases followed required procurement rules. |
| Reporting | Whether required reports were accurate, complete, and timely. |
| Subrecipient monitoring | Whether the auditee properly monitored subrecipients. |
The exam frequently uses allowable costs, eligibility, procurement, reporting, period of performance, and subrecipient monitoring fact patterns.
The Schedule of Expenditures of Federal Awards, or SEFA, lists federal awards expended by program and other required identifying information. The auditor reports on whether the SEFA is fairly stated in relation to the financial statements as a whole.
| Reporting element | What it communicates |
|---|---|
| Financial statement opinion | Opinion on the financial statements. |
| Yellow Book report | Internal control over financial reporting and compliance matters. |
| Major-program compliance opinion | Opinion on compliance for each major program. |
| Internal control over compliance report | Significant deficiencies and material weaknesses in compliance controls. |
| Schedule of findings and questioned costs | Audit findings, questioned costs, and required detail. |
| Summary schedule of prior audit findings | Status of prior findings. |
| Corrective action plan | Management’s plan to correct current findings. |
The auditee, not the auditor, is responsible for preparing the corrective action plan.
Questioned costs arise when the auditor identifies costs that may be unallowable, inadequately supported, or otherwise inconsistent with award requirements.
| Issue | Possible finding |
|---|---|
| Missing documentation for payroll charged to a grant | Questioned cost and control finding. |
| Cost incurred after the period of performance | Noncompliance and questioned cost. |
| Procurement did not follow required competition rules | Compliance finding, possible questioned cost. |
| Subrecipient monitoring not performed | Internal control over compliance finding. |
| Prior finding not corrected | Repeat finding and follow-up issue. |
Not every finding has a known dollar amount. When questioned costs are unknown or not reported, the auditor explains the issue as required by the reporting framework.
Use this sequence for Single Audit questions: