Audit vs review vs compilation: these are the three levels of financial statement service a CPA can provide, and each one offers a different degree of assurance to the people who rely on your numbers. Whether you share financial statements with lenders, investors, suppliers, or customers, the type of CPA report attached to those statements shapes how much confidence readers can place in them. Choosing the right level of service means balancing cost, regulatory requirements, and the expectations of the people who will read your financials. Pease Bell CPAs provides all three through our audit and assurance services.
Not all CPA reports are created equal. An audit delivers the highest level of assurance, a review provides limited assurance, and a compilation offers no assurance at all. Understanding these distinctions helps business owners avoid paying for more service than they need or, just as importantly, providing less assurance than their stakeholders require.
Before engaging a CPA, businesses should clarify what is driving the need for a financial statement. Is it a debt covenant requirement? A shareholder request? A regulatory obligation? Performance measurement or compensation calculation? With a clear understanding of the purpose, you can select the appropriate level of service without wasting resources.
What is a financial statement audit?
An audit is the highest level of financial statement service a CPA can provide. The purpose of a financial statement audit is to give users, such as lenders, investors, or regulators, an independent opinion on whether the financial statements are prepared in accordance with the applicable financial reporting framework, typically GAAP in the United States. These auditing standards are established by the American Institute of CPAs (AICPA) for private companies and by the relevant regulators for public entities.
During an audit, the CPA obtains what is known as “reasonable assurance” that the financial statements as a whole are free from material misstatement, whether caused by error or fraud. Reasonable assurance is a high level of confidence, but it is not absolute. The auditor uses professional judgment to determine which items to observe, test, confirm, compare, or trace based on their materiality and risk.
Key procedures in a financial statement audit
Auditors follow a structured process that includes several important procedures:
- Inquiries of management: The auditor asks questions to understand the organization’s operations, financial reporting, and any known instances of fraud or error.
- Internal control evaluation: The auditor assesses how well the company’s internal control system prevents and detects misstatements.
- Analytical procedures: The auditor examines expected and unexpected variances in account balances or classes of transactions to identify potential issues.
- Testing documentation: The auditor reviews supporting documents for selected account balances and transaction classes.
- Physical inventory observation: The auditor watches the physical count of inventory to verify quantities.
- Third-party confirmations: The auditor independently confirms accounts receivable and other balances directly with outside parties.
After gathering sufficient evidence, the auditor issues an opinion. An unqualified, or “clean,” opinion means the financial statements present fairly, in all material respects, in conformity with GAAP. The accounting standards underlying GAAP are issued by the Financial Accounting Standards Board (FASB). This is the most favorable outcome of an audit.
What happens when an auditor cannot issue a clean opinion?
Sometimes an auditor encounters limitations or issues that prevent a clean opinion. In those cases, the auditor may issue one of several alternative opinions:
- Qualified opinion: The financial statements are fairly stated except for a specific matter. This may result from a scope limitation or a departure from GAAP that is material but not pervasive.
- Disclaimer of opinion: A scope limitation is so severe that the auditor cannot form an opinion on the financial statements as a whole.
- Adverse opinion: Departures from GAAP are so significant that the financial statements are not fairly stated. The auditor must describe the misstatements and their effects.
As an additional benefit, auditors may identify deficiencies in internal controls or weaknesses in the organization’s systems and offer recommendations for improvement.
What is a review engagement?
A review engagement provides limited assurance that no material modifications need to be made to the financial statements for them to conform with the applicable financial reporting framework. This is a meaningful step below the assurance level of an audit.
The distinction between an audit and a review matters because the procedures are substantially different. In a review, the CPA does not perform the detailed testing, confirmations, or physical observations required in an audit. Instead, the CPA relies on two primary categories of procedures:
Inquiry procedures in a review
The CPA asks management about accounting practices and principles, procedures for recording financial information, actions taken at owners’ or directors’ meetings, and any knowledge of fraud. Management also provides written representations confirming the accuracy and completeness of the information provided to the CPA.
Analytical procedures in a review
The CPA compares financial data against expectations, examines ratios derived from recorded amounts, and evaluates the plausibility of relationships between different financial figures. These analytical procedures help the CPA understand whether the key relationships among financial numbers are reasonable.
Based on these inquiries and analytical procedures, the CPA expresses limited assurance, stating that nothing came to their attention that would require material modifications to the financial statements. Because the scope of work is substantially less intensive than an audit, the CPA cannot express an opinion on the fairness of the financial statements taken as a whole.
A review engagement is often a practical choice for businesses that need more credibility than a compilation provides but do not face a regulatory or contractual requirement for a full audit.
What is a compilation engagement?
A compilation is the most basic level of CPA financial statement service. In a compilation engagement, the CPA assists management in presenting financial information in the form of financial statements without providing any assurance that those statements are free from material misstatement.
The compilation process involves two core activities: gaining a general understanding of the business, including the accounting principles it uses and its financial reporting system, and then presenting the financial information in the accepted format of proper financial statements. The CPA’s report explicitly states that the service is a compilation and that no opinion or assurance is being expressed.
How a compilation differs from an audit or review
Several characteristics distinguish a compilation from the other service levels:
- No assurance provided: Unlike an audit (reasonable assurance) or a review (limited assurance), a compilation provides no assurance about the accuracy of the financial statements.
- Independence not required: A CPA does not need to be independent of the organization to perform a compilation. If the CPA is not independent, the report must disclose that fact.
- Flexible disclosure options: A compilation report can include full footnote disclosures, or those otherwise required disclosures can be omitted entirely. This flexibility is not available in an audit or review.
Compilation engagements are typically the least expensive option and may be suitable when financial statement users do not require external assurance, for example, when statements are prepared primarily for internal management use. Many businesses pair compilations with ongoing bookkeeping support through client accounting services.
How to choose between an audit, review, and compilation
Understanding audit vs review vs compilation comes down to matching the right service level to your situation. Lenders and investors generally require an audit because it provides the highest level of confidence in the financial statements. Regulatory bodies may also mandate audited financials for certain industries or entity sizes.
A review may be appropriate when a moderate level of assurance satisfies stakeholder requirements, for instance, when a lender accepts reviewed financial statements for smaller credit facilities. Industry context also matters: regulated sectors such as skilled nursing and long-term care often face audit requirements that other industries do not. A compilation works well when the primary need is simply to present financial data in a standard format, without external assurance.
When weighing audit vs review vs compilation, the decision ultimately comes down to balancing the cost of the CPA’s services against the level of assurance your financial statement users require. Spending more than necessary wastes resources, but providing less assurance than stakeholders expect can undermine confidence in your business.
Frequently Asked Questions
What is the difference between an audit, review, and compilation?
An audit provides reasonable assurance that financial statements are free from material misstatement and includes an auditor’s opinion. A review provides limited assurance through inquiries and analytical procedures but does not include an opinion. A compilation presents financial information in statement form without any assurance or opinion from the CPA.
When does a business need an audit instead of a review?
A business typically needs a financial statement audit when lenders, investors, or regulators require the highest level of assurance. Debt covenants, SEC filings, and certain state or federal regulations often mandate audited financial statements. If no such requirement exists, a review or compilation may be sufficient.
How much does a compilation cost compared to an audit?
A compilation is generally the least expensive CPA financial statement service because the procedures are minimal and no assurance is provided. A review costs more due to the inquiry and analytical work involved. An audit is the most expensive because it requires extensive testing, confirmations, and evidence gathering. Exact costs vary based on the size and complexity of the organization.
Can a CPA perform a compilation without being independent?
Yes, a CPA can perform a compilation engagement even if they are not independent of the organization. However, the compilation report must disclose the lack of independence. This flexibility does not apply to audits or reviews, which both require CPA independence.
What does “limited assurance” mean in a review engagement?
Limited assurance means the CPA has performed enough procedures, primarily inquiries and analytical comparisons, to state that nothing came to their attention requiring material modifications to the financial statements. It provides less confidence than the “reasonable assurance” of an audit but more credibility than a compilation, which offers no assurance at all.
What types of audit opinions can a CPA issue?
A CPA can issue four types of audit opinions: an unqualified (clean) opinion indicating the statements are fairly presented, a qualified opinion noting a specific exception, a disclaimer of opinion when the auditor cannot form a conclusion, or an adverse opinion when the financial statements are materially misstated. The type of opinion depends on the findings during the audit process.
