2311 Introduction—Group audit considerations
Dec-2023

In This Section

Introduction

Definitions

CAS Objective

The objectives of the auditor are (CAS 600.8):

(a)   To determine whether to act as the auditor of the group financial statements; and

(b)   If acting as the auditor of the group financial statements:

(i) To communicate clearly with component auditors about the scope and timing of their work on financial information related to components and their findings; and

(ii) To obtain sufficient appropriate audit evidence regarding the financial information of the components and the consolidation process to express an opinion on whether the group financial statements are prepared, in all material respects, in accordance with the applicable financial reporting framework.

Introduction

CAS Guidance

CAS 600 deals with special considerations that apply to group audits, in particular those that involve component auditors. (CAS 600.1)

An auditor may find CAS 600, adapted as necessary in the circumstances, useful when that auditor involves other auditors in the audit of financial statements that are not group financial statements. For example, an auditor may involve another auditor to observe the inventory count or inspect physical fixed assets at a remote location. (CAS 600.2)

The group engagement partner applies the requirements of CAS 220 regardless of whether the group engagement team or a component auditor performs the work on the financial information of a component. CAS 600 assists the group engagement partner to meet the requirements of CAS 220 where component auditors perform work on the financial information of components. (CAS 600.5)

Audit risk is a function of the risk of material misstatement of the financial statements and the risk that the auditor will not detect such misstatements. In a group audit, this includes the risk that the component auditor may not detect a misstatement in the financial information of the component that could cause a material misstatement of the group financial statements, and the risk that the group engagement team may not detect this misstatement. CAS 600 explains the matters that the group engagement team considers when determining the nature, timing and extent of its involvement in the risk assessment procedures and further audit procedures performed by the component auditors on the financial information of the components. The purpose of this involvement is to obtain sufficient appropriate audit evidence on which to base the audit opinion on the group financial statements. (CAS 600.6)

OAG Guidance

This section contains requirements and guidance applicable to group audit engagements. Group audit requirements and guidance applies to audits of consolidated financial statements, regardless of whether the audit engagement is structured so that audit procedures are performed at multiple locations or are performed centrally by one audit  engagement team.

Group audits, whether of small groups with only two or three components, or of major corporations operating on a global scale, often involve complex considerations regarding audit strategy, planning, execution and communication. Effective and efficient audits are most likely to result when the group engagement team:

  • has an understanding of the group entity, its environment and the risks of material misstatement of the group financial statements;

  • develops an audit approach that is responsive to the risks in the entity’s business as a whole; and

  • determines appropriate levels of direction and supervision of those performing the work and applying judgment in determining which work of component auditors they will review.

Section 2300 does not address joint audits.

Definitions

CAS Guidance

For purposes of the CASs, the following terms have the meanings attributed below (CAS 600.9):

(a) Component—An entity or business activity for which group or component management prepares financial information that should be included in the group financial statements.

(b) Component auditor—An auditor who, at the request of the group engagement team, performs work on financial information related to a component for the group audit.

(c) Component management—Management responsible for preparing the financial information of a component.

(d) Component materiality—The materiality for a component determined by the group engagement team.

(e) Group—All the components whose financial information is included in the group financial statements. A group always has more than one component.

(f) Group audit—The audit of group financial statements.

(g) Group audit opinion—The audit opinion on the group financial statements.

(h) Group engagement partner—The partner or other person in the firm who is responsible for the group audit engagement and its performance, and for the auditor’s report on the group financial statements that is issued on behalf of the firm. Where joint auditors conduct the group audit, the joint engagement partners and their engagement teams collectively constitute the group engagement partner and the group engagement team. This CAS does not, however, deal with the relationship between joint auditors or the work that one joint auditor performs in relation to the work of the other joint auditor.

(i) Group engagement team—Partners, including the group engagement partner, and staff who establish the overall group audit strategy, communicate with component auditors, perform work on the consolidation process, and evaluate the conclusions drawn from the audit evidence as the basis for forming an opinion on the group financial statements.

(j) Group financial statements—Financial statements that include the financial information of more than one component. The term “group financial statements” also refers to combined financial statements aggregating the financial information prepared by components that have no parent but are under common control.

(k) Group management—Management responsible for preparing and presenting the group financial statements.

(l) Group-wide controls—Controls designed, implemented and maintained by group management over group financial reporting.

(m) Significant component—A component identified by the group engagement team (i) that is of individual financial significance to the group, or (ii) that, due to its specific nature or circumstances, is likely to include significant risks of material misstatement of the group financial statements.

Reference to “the applicable financial reporting framework” means the financial reporting framework that applies to the group financial statements. Reference to “the consolidation process” includes (CAS 600.10):

(a) The recognition, measurement, presentation, and disclosure of the financial information of the components in the group financial statements by way of consolidation, proportionate consolidation, or the equity or cost methods of accounting; and

(b) The aggregation in combined financial statements of the financial information of components that have no parent but are under common control.

OAG Guidance

The following additional terms are used throughout section 2300 in relation to group engagements.  These terms either provide clarification of the CAS 600.9 terms or are additional terms utilized in OAG guidance.

Component—A component could be a head office, parent, division, location, business unit, branch, subsidiary, activity, shared service center, joint venture, associated company, agency, department, Crown corporation, fund, non-governmental organizations, or other entity whose financial information is included in the group financial statements. See additional considerations in OAG Audit 2323 and OAG Audit 2334.

Component auditor—A component auditor can be from an OAG office, OAG audit team, or an external firm/auditor. The component auditor performs audit work related to a component for purposes of the group audit. The component auditor is part of the overall engagement team for a group audit. Also referred to by OAG as component engagement team.

Component engagement leader—The person who is responsible for the audit work performed by the component engagement team, compliance with CAS 220, and signing the interoffice (or interfirm) component auditor's report on behalf of their firm.

Component financial statements—A complete set of stand-alone financial statements, including explanatory notes, of a component. They would ordinarily have been prepared in accordance with the financial reporting framework that is applicable to the component.

Component materiality—Generally, component materiality will be referred to more specifically as “component overall materiality” or “component performance materiality,” which are the materiality levels for a component determined in the context of the group audit.

External firm/auditors—An unaffiliated firm/auditor responsible for the audit work at a component.  Also referred to as a “non-OAG firm” in this guidance.

Group engagement partner—Referred to in OAG as Group engagement leader. In some territories may be a director or senior manager. The group engagement leader is the 'engagement partner' as described by CAS 220.C12(a) for the purpose of the external auditor's report, and, therefore, takes overall responsibility for managing and achieving quality on the group audit engagement through direction and supervision of the group engagement team and component auditors, and through review of their work.

Group auditor or Group engagement team—The group engagement leader and members of the engagement team other than the component auditors. The group engagement team is responsible for:

  • establishing the overall group audit strategy and group audit plan.

  • directing and supervising component auditors and reviewing their work.

  • evaluating the conclusions drawn from the audit evidence obtained as the basis for forming an opinion on the group financial statements.

  • Also referred to as a “group auditor” in this guidance.

Group financial statements—Also see definition for “Special purpose financial information prepared for the purposes of group consolidation.”

Group overall materiality and group performance materiality—The overall and performance materiality levels determined for the group financial statements as a whole.

Group-wide controls—Also known  in this guidance as entity level controls related to more than one component in an audit of group financial statements.

Head office—The entity’s central or controlling office in a group audit engagement (typically the parent company).

Interoffice report—A report provided by an OAG component auditor to the OAG group engagement team in relation to a component’s financial statements or component financial information.

Non-significant component—Any component that is not individually financially significant to the group and does not contain a significant risk of material misstatement.

Significant component—see OAG Audit 2323.

Special purpose financial information prepared for the purposes of group consolidation (hereinafter referred to as component financial information or special purpose financial information)—Special purpose financial information prepared for the purposes of group consolidation refers to any form of financial information submitted from a component to the corporate head office to support the preparation of consolidated group financial statements. Such financial information includes, for example:

  • Standard reporting forms;

  • A trial balance;

  • An individual financial statement or statements (i.e., balance sheet, income statement, cash flow statement);

  • Financial statement element schedule (e.g., accounts receivable statement); and/or

  • Any other financial information (e.g., lease or debt information relevant to the preparation of the notes to the consolidated group financial statements).

Statutory Audit—Includes all audit engagements accepted by the Auditor General such as statutory, regulatory, and other audits.