Book excerpt: This book provides the requirements for performing engagements in accordance with Statements on Standards for Accounting and Review Services (SSARS). This updated edition includes the authoritative standards and interpretations applicable to preparation, compilation, and review engagements. The guidance and related interpretations will help you apply the standards in specific circumstances. The codification also clearly shows amendments, deleted or superseded content, and conforming changes due to the issuance of other authoritative guidance. The codification contains all SSARSs, including SSARS No. 21, which is now effective, through SSARS No. 25, Materiality in a Review of Financial Statements and Adverse Conclusions. SSARS No. 25 further converges AR-C section 90 with International Standard on Review Engagements (ISRE) 2400 (Revised), Engagements to Review Historical Financial Statements, and minimizes differences with the auditing standards regarding concepts that are consistent regardless of the level of service performed on the financial statements.