Audit vs. Review: Understanding the Key Differences

When businesses prepare financial statements, stakeholders often require an independent evaluation to gain confidence in the accuracy of the information presented. Two common types of assurance services are audits and reviews. While both are conducted by certified public accountants (CPAs) or other qualified professionals, the scope, depth, and assurance they provide differ significantly.

This article explores the distinctions between an audit and a review, clarifying their purposes, procedures, and practical applications for organizations and stakeholders.

Purpose of an Audit vs. a Review

The primary purpose of an audit is to provide reasonable assurance that a company’s financial statements are free from material misstatement, whether due to fraud or error. This high level of assurance is essential for stakeholders such as investors, lenders, regulators, and the public, who rely on the accuracy of financial reporting to make informed decisions.

By contrast, the purpose of a review is to provide limited assurance that the financial statements are in accordance with applicable accounting standards. Reviews are less rigorous and do not guarantee the same level of confidence as an audit, but they still provide stakeholders with a degree of comfort that the statements are not materially misstated.

Scope of Work

The scope of an audit is extensive. Auditors perform a range of procedures, including:

• Testing transactions and account balances
• Confirming information with third parties (such as banks and customers)
• Observing physical inventories and inspecting assets
• Evaluating the design and effectiveness of internal controls

These procedures allow auditors to form a well-supported opinion on the financial statements.

In contrast, the scope of a review is narrower. Review engagements typically involve:

• Analytical procedures (such as ratio analysis and trend evaluation)
• Inquiries of management about accounting practices, procedures, and specific transactions

Unlike audits, reviews do not involve independent verification or detailed testing.

Level of Assurance

An audit provides reasonable assurance, which is the highest level of assurance a CPA can give. While not absolute—since auditors cannot examine every transaction—the assurance is strong enough to instill confidence in stakeholders that the financial statements present a true and fair view.

A review provides limited assurance, meaning the CPA states that nothing came to their attention suggesting the financial statements require material modification. This phrasing indicates a lower level of certainty compared to an audit.

Standards and Reporting

Audits are conducted under Generally Accepted Auditing Standards (GAAS) in the United States or equivalent international frameworks. The deliverable is an auditor’s opinion, which can be unqualified (clean), qualified, adverse, or a disclaimer of opinion depending on the findings.

Reviews, on the other hand, are governed by the Statements on Standards for Accounting and Review Services (SSARS) in the U.S. or international equivalents. The deliverable is a review report, which states whether the CPA is aware of any material modifications necessary.

Cost, Time, and Practical Use

Because audits are comprehensive, they are more time-consuming and costly. Publicly traded companies and organizations with regulatory requirements must undergo annual audits. Banks, investors, and government agencies also commonly require audited statements to ensure transparency and accountability.

Reviews are faster and less expensive to perform since they involve fewer procedures. They are well-suited for privately held companies, small businesses, and organizations whose stakeholders require some level of external assurance but not the depth of an audit.

Choosing Between an Audit and a Review

The choice between an audit and a review depends on the needs of stakeholders and regulatory requirements:

• Audit is appropriate when the highest level of assurance is required, especially for compliance, large financing arrangements, or when attracting investors.
• Review is appropriate when limited assurance is sufficient, and cost or resource efficiency is a priority.

Conclusion

Both audits and reviews play important roles in strengthening trust in financial reporting. An audit provides a deep, detailed evaluation that results in high assurance for stakeholders, while a review offers a more limited but still valuable level of confidence at a lower cost.

Organizations should carefully consider the expectations of their stakeholders, industry regulations, and internal goals when deciding which level of assurance best meets their needs.