By now, it should be clear that IFRS 18 is more than a presentation change
It has practical implications across finance functions, systems, and processes. One of the first areas many organisations will need to address is their chart of accounts.
Under IAS 1, charts of accounts were often designed with flexibility in mind. IFRS 18’s structured categories mean that each transaction must be clearly aligned to operating, investing, or financing activities. For many organisations, existing account structures may not currently provide the level of clarity and consistency required to support these classifications.
That does not necessarily mean starting from scratch
Management performance measures (MPMs) are widely used internally and externally, but under IFRS 18 they must be clearly defined and reconciled to IFRS numbers. This may require organisations to revisit how they define and communicate key metrics.
In some cases, there may be a disconnect between internal reporting and the new IFRS-defined subtotals. Bridging that gap will be an important part of implementation, both from a technical and a communication perspective.
There are also governance considerations. The judgments required under IFRS 18, such as classifying associates or determining the nature of treasury income, will need to be documented, supported, and consistently applied. This places greater emphasis on internal controls and audit readiness.
Beyond systems, IFRS 18 also affects how businesses think about performance.
These subtotals are particularly significant. Historically, “operating profit” has been one of the most widely used and inconsistently defined metrics in financial reporting. IFRS 18 standardises this measure, creating a consistent analysis baseline.
However, this is not just a technical adjustment. It has real implications for how businesses present their performance. Many organisations currently highlight alternative metrics that may not align with the new definitions. Under IFRS 18, those metrics can still be used, but they must be transparently reconciled.
Given the scale of change, the most important step organisations can take is to start early.
An effective approach typically begins with an impact assessment. This involves reviewing current financial statements, identifying key differences under IFRS 18, and understanding where changes will be required. From there, organisations can develop a roadmap covering systems, processes, data, and communication.
While the effective date of 2027 may seem distant, the complexity of the changes means that preparation cannot be left to the last minute.
IFRS 18 is ultimately about improving the clarity and usefulness of financial reporting. Organisations that approach it proactively will not only achieve compliance, but they will also be better positioned to communicate their performance in a more consistent and transparent way.
Retrospective application
Finally, IFRS 18 requires full retrospective application. This means companies must restate prior-period income statements using the new structure. For many organisations, this will be one of the most challenging aspects of implementation, as it depends heavily on the availability and quality of historical data.
Taken together, these changes represent a significant shift. They bring greater clarity and consistency, but they also demand more rigorous analysis and stronger data foundations.
For more information
We have a number of different resources available regarding IFRS 18, free to access.
