Professional Standards Navigator
This tool helps you identify the correct professional standards for various accounting and auditing engagements. Select an engagement type to see the governing rules.
The GAAS Hierarchy of Authority
SAS and PCAOB AS
These are mandatory standards. Language indicates the level of responsibility:
- "Must" or "Is Required": An unconditional requirement. Must be followed.
- "Should": A presumptively mandatory requirement. Must be followed unless a rare exception exists, which requires justification and alternative procedures.
Interpretive Publications
These are recommendations on how to apply the standards. They are not auditing standards themselves, but an auditor must be able to explain any departures.
Examples: AICPA Audit and Accounting Guides, Auditing Interpretations of GAAS.
Other Auditing Publications
These publications have no authoritative status but can be helpful. The auditor should be able to explain why they chose not to follow this guidance if applicable.
Examples: Journal of Accountancy articles, textbooks, CPE materials.