Auditing Standard ASA 101 Preamble to AUASB Standards (January 2025)
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Auditing Standard ASA 101 Preamble to AUASB Standards (January 2025)
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Auditing Standard ASA 101
The Auditing and Assurance Standards Board (AUASB) made Auditing Standard ASA 101 Preamble to AUASB Standards pursuant to section 227B of the Australian Securities and Investments Commission Act 2001 and section 336 of the Corporations Act 2001, on 28 January 2025.
This compiled version of ASA 101 incorporates subsequent amendments contained in another Auditing Standard made by the AUASB up to and including 12 November 2025 (see Compilation Details).
Early adoption of this Auditing Standard is permitted.
Mandatory Components (Ref: Para. A28-A44, A55)
Explanatory material does not create or extend mandatory components.
* * *
Application and Other Explanatory Material
Scope of this Auditing Standard (Ref: Para. 3-4)
“Authority Statement” included in AUASB Standards
This Auditing Standard forms an important part of the legal and regulatory framework of AUASB Standards. AUASB Standards are to be read in conjunction with this Auditing Standard.
All AUASB Standards contain an “Authority Statement”. The purposes of the Authority Statement are to:
link the issuance of each individual AUASB Standard to the mandating legislation;
identify the paragraphs that comprise the AUASB Standard; and
set out the requirement to read the AUASB Standard in conjunction with this Auditing Standard.
Standards issued by the AUASB (Ref: Para. 5-8)
The AUASB issues the following types of standards pursuant to its mandate under section 227B of the ASIC Act:
Australian Standards on Quality Management (ASQMs)
ASQMs[10] apply to firms in respect of all engagements to which AUASB Standards apply.
The authority of ASQMs is set out in the introduction to each ASQM.
ASAs, whilst developed in the context of financial report audits, are to be applied also, as appropriate, to audits of other historical financial information.
The authority of the suite of ASAs is set out in ASA 200[11]. ASA 200 deals with the auditor’s overall responsibilities when conducting an audit of a financial report in accordance with ASAs. Specifically, it sets out the overall objectives of the auditor, and explains the nature and scope of an audit designed to enable the auditor to meet those objectives. It also explains the scope, authority and structure of the ASAs, and includes requirements establishing the general responsibilities of the auditor applicable in all audits, including the obligation to comply with the ASAs.
The ASAs, taken together, provide the standards for the auditor’s work in fulfilling the overall objectives of the auditor. The ASAs deal with the general responsibilities of the auditor, as well as the auditor’s further considerations relevant to the application of those responsibilities to specific topics.
ASREs[12] are to be applied to the review of a financial report and the review of other historical financial information.
The authority of ASREs is set out in the introduction to each ASRE.[13]
ASSAs are to be applied to assurance engagements dealing with sustainability information.
ASSA 5000 includes requirements regarding the conduct of a sustainability assurance engagement. ASSA 5010 specifies the information in a sustainability report under the Act that is required to be audited and/or reviewed in accordance with ASSA 5000 for each relevant year.
ASAEs are to be applied to assurance engagements dealing with subject matters other than historical financial information.[14]
ASAE 3000[15] explains the scope, authority and structure of the ASAEs, and includes requirements regarding the conduct of an assurance engagement in accordance with ASAEs.[16]
Where a subject-matter specific ASAE is relevant to the subject matter of a particular engagement, that ASAE applies in addition to ASAE 3000. The introduction to each subject-matter specific ASAE sets out the relationship of the ASAE with ASAE 3000.
ASRSs are to be applied when an assurance practitioner is engaged to undertake engagements other than assurance engagements covered by ASAs, ASREs or ASAEs.[17]
The authority of ASRSs is set out in the introduction to each ASRS.[18]
Auditing Standards made under Section 336 of the Corporations Act
Auditing Standards made under section 336 of the Corporations Act apply to:
an audit of a financial report for a financial year, or an audit or review[19] of a financial report for a half-year, prepared in accordance with Part 2M.3 of the Act;
an audit conducted under Part 7.8 of the Act;
an audit of a financial report, or a complete set of financial statements, prepared for any other purpose;
a review, by the independent auditor of the entity, of a financial report, or a complete set of financial statements, comprising historical financial information, for any other purpose;
an audit or review of information in a sustainability report for a financial year, prepared in accordance with Part 2M.3 of the Act;
an audit or review of sustainability information for other purposes; and
a firm required to comply with ASQM 1.
Although Auditing Standards and Sustainability Assurance Standards are written mainly in the context of an external audit of a financial report[20] or an external audit/review of information in a sustainability report, they apply, as appropriate, to assurance over other historical financial information or sustainability information.
Compliance and Enforcement
Type of Entity
Public Sector Engagements
Applying AUASB Standards
Professional Judgement
Ethical Principles and Quality Management Standards
Relevant Ethical Requirements
Quality Management Standards
ASQM 1 deals with a firm’s responsibilities to design, implement and operate a system of quality management for audits or reviews of financial statements, or other assurance or related services engagements.
Engagement quality reviews form part of the firm’s system of quality management and:
ASQM 1 deals with the firm’s responsibility to establish policies or procedures addressing engagements that are required to be subject to engagement quality reviews.
ASQM 2 deals with the appointment and eligibility of the engagement quality reviewer, and the performance and documentation of the engagement quality review.
AUASB Standards are premised on the basis that a firm is subject to the ASQMs, and include requirements regarding quality management at the engagement level.[28]
Amendments to AUASB Standards
Amendment of Standards made under Section 336 of the Corporations Act
Compilations
The compiled version of a standard reflects the content of a standard, considering all amendments that have become effective since the principal standard was originally made.[29] Compilations are a requirement of the Legislation Act 2003 and are required to be lodged with the Office of Parliamentary Counsel for registration on the Federal Register of Legislation. A compilation is not a legislative instrument.
Where the AUASB issues a compiled version of a standard:
the title page of the standard indicates that it is a compiled version of the standard and shows the date of the compilation and the relevant Amending Standards that have been taken into account;
a “Compilation Details” section is included in the standard which includes the following information:
a “Table of Standards”, which sets out details of both the principal standard and subsequent Amending Standards, including the dates of both the principal and Amending Standards (date made, operative date and date registered on the Federal Register of Legislation);
a “Table of Amendments”, which provides details of amendments to the principal standard (paragraph of standard affected, how affected and a paragraph reference to the relevant Amending Standard); and
a statement that the compilation is not a separate Auditing Standard made by the AUASB but a representation of the relevant Standard which incorporates the original standard and subsequent amendments.
the Operative Date paragraph in the standard includes a reference to the Compilations Details section of the standard, for details about the operative dates of paragraphs changed or added by an Amending Standard. (Ref: Para. A33(a))
Authority of the Paragraphs in AUASB Standards (Ref: Para. 12-13)
The paragraphs in AUASB Standards do not have equal authority. AUASB Standards consist of paragraphs that are either:
mandatory components; or
explanatory material.
Where an AUASB Standard does not include specific information to explain the status and authority of the paragraphs included within the standard, the terms explained below (for example, “Objectives”, “Requirements”, “Application and Other Explanatory Material”), are to be interpreted in a directly analogous way to how they are explained in the context of financial report audits in ASA 200.
Mandatory Components (Ref: Para. 12)
“Application” Paragraphs (Ref: Para. 12(a), 13(b))
Engagements under the Corporations Act
Auditing Standards made under section 336 of the Corporations Act[30] contain a mandatory “Application” paragraph (shown as paragraph “Aus 0.1”) relating to for example:
an audit of a financial report for a financial year, or an audit of a financial report for a half-year, in accordance with the Corporations Act;
an audit or review of a sustainability report for a financial year, in accordance with the Corporations Act; and
an audit of a financial report, or a complete set of financial statements, for any other purpose.
The “Application” paragraph in each Auditing Standard that refers to audits or reviews conducted in accordance with the Corporations Act applies specifically to:
Auditing Standards may also include an additional “Application” paragraph (shown as paragraph “Aus 0.2”) that forms part of the explanatory material of the standard to explain that, although the Auditing Standards are written mainly in the context of an audit of a financial report, they apply also, adapted as necessary, to the audit of other historical financial information.
Operative Date (Ref: Para. 12(b))
The operative date stipulates the date from which the AUASB Standard is to be applied. For audits or reviews of financial reports and sustainability reports, the operative date is stated in relation to a financial reporting period. The requirements of an AUASB Standard remain in force until:
the operative date of any amendment to those requirements (Ref: Para. A22-A25));
in relevant circumstances, the early adoption of such amendments; or
the AUASB Standard is withdrawn by the AUASB.
Unless otherwise stated in an AUASB Standard, the assurance practitioner is permitted to apply a standard before the operative date specified therein. Where an AUASB Standard is early adopted, all relevant conforming and consequential amendments must also be early adopted.
Where an assurance practitioner is conducting an audit of a financial report and elects to early adopt an auditing standard made under section 336 of the Corporations Act, in accordance with section 336(4), that election must be recorded in the audit report.
Objective(s) (Ref: Para. 12(c))
Definitions (Ref: Para. 12(d))
Requirements (Ref: Para. 12(e))
Paragraphs that impose obligations on the assurance practitioner are contained in a separate “Requirements” section of each standard and expressed using the word “shall”. Requirements are designed to enable the assurance practitioner to meet the stated objective(s) of an AUASB Standard. In certain circumstances, requirements are legally binding and enforceable.
The assurance practitioner applies the requirements in the context of the other material included in the AUASB Standard (for example, introductory material, definitions and application and other explanatory material). The entire text of an AUASB Standard, therefore, is relevant to an understanding of the objectives stated in an AUASB Standard and the proper application of the requirements of the standard. Although the assurance practitioner has a responsibility to consider the entire text of the standard in carrying out the engagement, application and explanatory material does not in itself impose a requirement.
For information on how the requirements in AUASB Standards are to be applied for:
audits and reviews of historical financial reports and information – see ASA 200;[31]
assurance engagements other than audits or reviews of historical financial information – see ASAE 3000 and ASSA 5000.[32]
These standards also include requirements and explanatory material on the limited circumstances where the assurance practitioner may judge it necessary to depart from a relevant requirement in a standard.
The assurance practitioner is required to comply with all AUASB Standards relevant to an engagement. Furthermore, AUASB Standards require compliance with each requirement of a relevant standard unless, in the circumstances of the engagement, the requirement is not relevant because it is conditional and the condition does not exist.[33]
When, in the circumstances of an engagement:
an entire AUASB Standard is not relevant; or
a requirement is not relevant because it is conditional and the condition does not exist,
there is no requirement to document the reason(s) why the requirement is not relevant.
However, for audits or reviews conducted in accordance with the Act, where in rare and exceptional circumstances, factors outside the assurance practitioner’s control prevent the practitioner from complying with an essential procedure contained within a relevant requirement, the practitioner is required:
if possible, to perform appropriate alternative audit procedures; and
under ASA 230[34], ASRE 2410[35] or ASSA 5000[36], as applicable, to document:
the circumstances surrounding the inability to comply;
the reasons for the inability to comply; and
justification of how alternative procedures achieve the objectives of the requirement.[37]
In the case of a review and related services engagement, the assurance practitioner is required to apply the requirements contained only in the specified standard applicable to that engagement, in conjunction with this Preamble to AUASB Standards. There is no requirement to apply the requirements of other AUASB Standards. However, reference to ASAs may be helpful to provide guidance.
Explanatory Material (Ref: Para. 13)
Conformity with International Standards (Ref: Para. 13(a))
“Compliance with this Standard enables compliance with the equivalent international standard”.
Introduction (Ref: Para. 13(c))
Application and Other Explanatory Material (Ref: Para. 13(d))
While such guidance does not in itself impose a requirement, it is relevant to the proper application of the requirements. The application and other explanatory material may also provide background information on matters addressed in an AUASB Standard.
Appendices (Ref: Para. 13(e))
AUASB Drafting Conventions (Ref: Para. 12-13)
The following drafting principles and conventions apply to AUASB Standards:
The requirements of each AUASB Standard are contained in a separate “Requirements” section of a standard. The requirements of an AUASB Standard are expressed using the word “shall” to denote the obligations an assurance practitioner is required to comply with in achieving the objective or objectives stated in the standard.
Paragraphs containing application and other explanatory material are designated with the letter “A”.
The present tense of verbs is used in explanatory material when it is the best form of expression. Use of the present tense does not create or imply requirements. The present tense is used in examples and other explanatory material that relate to professional judgement and professional scepticism.
Requirements that exist in another AUASB Standard are anchored back to the original requirement (for example, using the phrase “in accordance with”) when repetition or a cross reference is considered necessary for understanding and context.
Australian additions or modifications to an equivalent IAASB Standard are marked as Australian paragraphs or additional appendices commencing with an “Aus” prefix.
Deletions from an equivalent IAASB Standard are clearly noted as “Deleted by the AUASB. Refer Aus …”.
The extent of differences between an AUASB Standard and its equivalent international standard are detailed in the “Conformity with International Standards” section of the standard.
The word “including”, as used in AUASB Standards, means a list of items or examples is provided but the list does not purport to contain all relevant items or examples and intentionally is not exhaustive.