Explore the requirements and best practices for evaluating and reporting on supplementary and other information (RSI, OI) in documents that include audited financial statements.
In the context of an audit, financial information typically revolves around a set of general-purpose financial statements prepared according to an applicable financial reporting framework (e.g., GAAP, IFRS, GASB standards). However, many organizations present additional materials—ranging from required supplementary information (RSI) to various forms of other information (OI)—alongside these audited statements. Understanding how these materials fit within the auditor’s scope, and what responsibilities auditors have concerning them, is vital for CPA candidates and practitioners alike. This section provides a thorough exploration of the requirements for dealing with supplementary and other information, as well as recommended protocols for handling them effectively.
Certain accounting standards boards or regulatory bodies mandate that organizations present specific schedules or data in conjunction with their audited financial statements. This data, known as Required Supplementary Information (RSI), is essential to providing context or additional disclosures relevant to users. Examples include:
• Pension or other post-employment benefit schedules under Governmental Accounting Standards Board (GASB) statements for governmental entities.
• Management’s Discussion and Analysis (MD&A) for certain entities (including those reporting under the SEC or GASB frameworks).
RSI is not part of the basic financial statements but is required for a complete presentation under a given set of standards. Because it is outside the basic financial statements, auditors do not provide an opinion on RSI unless specifically engaged or legally required to do so.
Auditors are required to perform limited procedures on RSI; these procedures often involve:
Auditors are not expected to obtain the same level of assurance on RSI as on the primary financial statements. Thus, the audit opinion does not extend to RSI, unless an additional engagement is undertaken.
Typically, the auditor’s report will reference RSI to clarify that:
• The RSI is included, but it is not part of the audited financial statements.
• The auditor performed certain limited procedures but does not express an opinion or provide assurance on RSI.
However, where an applicable legal or regulatory requirement dictates providing an opinion on RSI, the auditor would extend testing procedures and offer the required assurance. In such instances, the nature of the engagement must be agreed on upfront through an engagement letter or addendum.
Beyond RSI, additional material may appear in an annual report or other document containing audited financial statements. Called Other Information (OI), this might include:
• CEO and management letters.
• Operational highlights and achievements.
• Non-GAAP performance metrics.
• Sustainability or corporate social responsibility statements (if not part of the officially audited sections under a recognized ESG framework).
Unlike RSI, which is mandated, OI is generally discretionary. The applicable framework does not require these materials, but they may be presented to provide contextual or qualitative insights.
Under AU-C Section 720, the auditor reads the OI to identify any material inconsistencies or misstatements of fact relative to the audited financial statements. Steps often include:
The aim is not to audit the OI but to ensure it does not undermine or contradict the information for which the auditor is providing an opinion. If inconsistent data or misleading statements are not addressed by management, the auditor may add an “Other-Matter” paragraph or, in extreme cases, withdraw from the engagement.
• Including non-GAAP measures that suggest different results than those in the audited financial statements.
• Presenting prospective or forward-looking data without clarifying its inherent uncertainties.
• Omission of disclaimers where partial or unaudited information is present.
Supplementary Information (SI) in this context refers to data or schedules that are not part of the basic financial statements yet accompany them for additional analysis or disclosures. Examples include:
• Schedules of expenditures of federal awards in a Single Audit.
• Detailed breakdowns of expenses, revenue, or debt instruments.
• Additional segment information or condensed statements.
When engaged to provide an “in relation to” opinion, the auditor performs sufficient procedures to conclude whether the supplementary information is fairly stated relative to the audited financial statements as a whole. This can occur in a variety of cases:
• An organization’s lenders require an independent auditor’s acknowledgment that the schedules are consistent with the underlying audited statements.
• Certain governmental or regulatory oversight bodies mandate it (e.g., federal grant reporting in the U.S.).
These additional procedures might involve:
If the auditor is specifically engaged to express an opinion on SI, the auditor’s report typically includes a separate section or paragraph addressing management’s responsibility for the SI and the auditor’s procedures. The wording clarifies that the opinion is solely on the SI “in relation to” the basic financial statements and not on the SI in isolation.
The following Mermaid diagram visually represents a high-level workflow of how auditors deal with RSI, OI, and SI:
flowchart LR
A((Audit Financial Statements)) --> B{Identify RSI?}
B -->|Yes| C[Perform Limited Procedures]
B -->|No| D{Identify SI Engagement?}
C --> E[Documentation of Limited Procedures]
D -->|SI Engagement| F[In Relation To Opinion Procedures]
D -->|No SI Engagement| G[No Additional Testing]
C --> H[Final Audit Report Reference to RSI]
F --> I[Opinion on SI in Relation to F/S]
G --> I
I --> J((Issue Auditor's Report + Supplementary Sections))
A --> K{Other Info in Annual Report?}
K -->|Yes| L[Read OI for Material Inconsistencies]
L --> M[Resolution of Discrepancies or Other-Matter Paragraph]
M --> J
K -->|No| J
Explanation of the diagram:
• The process begins with the Audit of the Financial Statements (Node A).
• Auditors check whether RSI exists (Node B). If yes, they perform limited procedures (Node C) and document them (Node E).
• They also determine if an in relation to opinion on SI is part of the engagement (Node D).
• If so, they perform supplementary testing (Node F) and express an opinion on SI (Node I).
• The final auditor’s report references RSI, SI, and includes any notes on OI.
• Simultaneously, the auditor monitors for Other Information (Node K) and addresses any inconsistencies (Nodes L, M).
Early Identification
Assess whether RSI or SI requirements apply at the planning stage. Clarify in the engagement letter how these materials will be handled.
Clear Communication
Discuss with management whether they plan to issue additional schedules or an annual report. Agree on the scope of procedures for any SI “in relation to” opinion and set expectations for the OI review.
Documentation
Meticulously document limited procedures for RSI and how any OI inconsistencies were resolved. For SI engagements, maintain a clear audit trail demonstrating how data in SI ties back to the audited statements.
Managing Changes
Often, these materials are prepared concurrently with the audited statements. Any last-minute changes to the financial statements may ripple through RSI, OI, and SI. An agile process and consistent communication can mitigate risks of mismatch or inconsistency.
Professional Judgment
Judgment is key in deciding when discrepancies in OI are material enough to warrant an emphasis paragraph or other matter. The auditor must weigh actual vs. perceived misstatements.
Regulatory Awareness
Stay informed of updates to AU-C Sections 720 and 730, along with any relevant IRS, SEC, PCAOB, or GASB requirements. Changes in accounting frameworks may alter what is considered RSI or OI.
• AU-C Section 730: Addresses the auditor’s responsibilities regarding Required Supplementary Information.
• AU-C Section 720: Covers auditor’s responsibilities for Other Information in documents containing audited financial statements.
• Government Accounting Standards Board (GASB) for public sector entities, with guidelines on pension disclosures and other RSI.
• SEC Guidance for MD&A in publicly traded companies.
• Firm Resources on best practices for disclaimers and disclaiming opinions on RSI, SI.
For deeper reading and authoritative guidance:
• The AICPA Audit Guide on “Government Auditing Standards and Single Audits” (for RSI such as budgetary comparisons).
• PCAOB Auditing Standards (AS 2701, AS 2710) for certain SEC filers covering supplementary and other information in filings.
• GASB Comprehensive Annual Financial Report (CAFR) guidelines for local/state governments.
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