The International Financial Reporting Standard 18 (IFRS 18) represents one of the most significant changes to financial statement presentation in decades. Set to replace IAS 1, this new standard aims to enhance comparability and transparency. However, the transition introduces significant implementation challenges and potential pitfalls. According to a Deloitte survey on IFRS 18 readiness, more than 60% of finance leaders at IFRS-reporting companies said they had not yet begun detailed implementation planning as of mid-2025 (Deloitte, 2025). Organizations and auditors must navigate a complex landscape of implementation challenges and audit risks.
As Andreas Barckow, Chair of the International Accounting Standards Board (IASB), stated upon issuing the standard, "IFRS 18 is about making financial statements more useful to investors by providing better structure and more transparency about management's view of performance."
Understanding IFRS 18: The Big Picture
IFRS 18 introduces substantial changes to how companies present their financial performance. The standard mandates new categories in the statement of profit or loss, including operating, investing, and financing categories, along with defined subtotals that must be presented by all entities.
Critical Audit Risks to Monitor
The three primary audit risks under IFRS 18 are classification challenges in categorizing income and expenses into operating, investing, and financing activities; Management Performance Measures that require new reconciliations and disclosures; and aggregation and disaggregation judgments that demand consistent application of materiality principles across financial statement line items.
1. Classification Challenges
The most significant audit risk stems from the new classification requirements. Companies must categorize income and expenses into operating, investing, and financing activities based on defined criteria. According to EY's IFRS 18 implementation guide, classification decisions will require significant management judgment, particularly for entities with diverse revenue streams (EY, 2024).
2. Management Performance Measures (MPMs)
IFRS 18 introduces stringent requirements for MPMs, which are subtotals of income and expenses that management uses to communicate its view of financial performance beyond those required by IFRS. The IASB's Basis for Conclusions on IFRS 18 notes that MPMs will require reconciliation to IFRS-defined subtotals and are subject to audit, bringing non-GAAP-style metrics under formal reporting discipline for the first time. A KPMG analysis of early adoption challenges found that MPM disclosures will likely be among the most debated areas between preparers and auditors during the first reporting cycle (KPMG, 2024).
3. Aggregation and Disaggregation
The standard provides enhanced guidance on when to aggregate or disaggregate items. This seemingly straightforward requirement involves significant complexity and judgment. According to PwC's IFRS 18 readiness assessment, aggregation and disaggregation decisions will require companies to reassess their chart of accounts and reporting systems (PwC, 2024).
Implementation Hurdles: From Theory to Practice
Technical Implementation Challenges
Organizational and Governance Hurdles
Beyond technical challenges, IFRS 18 implementation requires significant organizational change management:
Specific Areas Requiring Enhanced Audit Scrutiny
Operating Profit Calculation
The requirement to present operating profit as a defined subtotal introduces audit risks around boundary determination. What's included in "operating" versus "investing" or "financing" requires careful judgment and consistent application. As Sue Lloyd, Vice-Chair of the IASB, has noted, "The defined operating profit subtotal will be one of the most closely watched numbers in financial statements — preparers need to get the classification right from the start."
Comparative Information Challenges
IFRS 18 requires retrospective application, meaning prior period comparatives must be restated. This creates unique audit challenges:
First-Time Adoption Risks
The year of first-time adoption presents amplified risks as organizations navigate the standard for the first time under real conditions.
Mitigation Strategies: Preparing for Success
For organizations
For Auditors
Audit firms should enhance their approach to address IFRS 18-specific risks:
Technology Solutions
Leveraging technology can help mitigate implementation and ongoing compliance risks:
Industry-Specific Considerations
Financial Services
Banks and insurance companies face unique challenges given the nature of their income and expenses. Interest income and expense classification, particularly for portfolios of investments, requires careful analysis under IFRS 18's main business activities approach.
Investment Entities
Entities whose primary business is investing face questions about what constitutes "operating" activities. The standard provides some relief but significant judgment remains.
Multinational Conglomerates
Groups with diverse business activities must apply IFRS 18 consistently across different operations, which may have varying business models. The challenge of developing group-wide policies that accommodate this diversity is significant. The International Federation of Accountants (IFAC) has called for coordinated implementation guidance to help multinational groups apply the standard consistently across jurisdictions.
