Glossary/Engagements and reports

First-year audit (initial engagement)

A first-year audit is an initial engagement where the auditor must also obtain evidence that opening balances do not contain material misstatements and that accounting policies were applied consistently.

CORAA TeamUpdated November 5, 2026

Definition

A first-year, or initial, audit engagement is one where the financial statements for the prior period were unaudited or audited by another auditor. AU-C 510 requires the auditor to obtain sufficient appropriate evidence that opening balances do not contain misstatements that materially affect the current period, and that prior period closing balances were properly brought forward and policies consistently applied.

Why it matters in an audit or review

Opening balances affect current-year results: an error in opening inventory flows into cost of sales. Procedures include reading the last financial statements and the predecessor's report, reviewing the predecessor's workpapers where available, testing current-period activity for balance sheet items, and performing specific procedures for those balances. If evidence is insufficient, the opinion can be modified.

Example

Illustrative: a new client's prior-year statements were reviewed, not audited. The auditor confirms the opening bank balances with the banks, observes the current-year inventory count and rolls it back to the opening date, and tests opening receivables through later collections.

Common mistakes

Budgeting first-year hours as if opening balances were already supported.

FAQ

Does the report mention the predecessor?

If the prior period was audited by another auditor, an other-matter paragraph may note that. Details depend on the facts.

Sources

  • AICPA, AU-C Section 510, Opening Balances-Initial Audit Engagements, Including Reaudit Engagements
  • AICPA, AU-C Section 705, Modifications to the Opinion in the Independent Auditor's Report
  • AICPA, AU-C Section 710, Comparative Information-Corresponding Figures and Comparative Financial Statements

Definitions paraphrase AICPA and FASB guidance; read the standard itself before relying on a requirement. Example figures are illustrative. This page is guidance, not professional advice. Report an error

Standards

AU-C 510

Related terms

  • Predecessor and successor auditor
    The predecessor auditor is the one being replaced and the successor is the incoming auditor, who communicates with the predecessor before accepting an engagement and may review its workpapers with permission.
  • Engagement letter
    An engagement letter is the written agreement between the firm and the client that sets the engagement's objective, scope, management's responsibilities, reporting, and fees, as AU-C 210 requires for audits.
  • Independent auditor's report
    The independent auditor's report is the signed document in which the auditor states an opinion on the financial statements, with sections for the opinion, basis for opinion, and each party's responsibilities.
  • Materiality
    Materiality is the size of misstatement, individually or in total, that could reasonably change the decisions of users of the financial statements, and it sets the scale for planning and evaluating an audit.

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