IFRS 18 will reshape how many companies present financial performance, although it does not change how profit is measured. The new standard replaces IAS 1 and applies to annual reporting periods beginning on or after 1 January 2027. Earlier application is permitted where local rules allow it.
For a company with a calendar year-end, 2027 is the first mandatory reporting year. That may sound distant, but implementation work needs to begin well before the 2027 close. Comparative figures must be restated, interim reports in the first year must reflect the new requirements, and many changes extend beyond the face of the income statement.
For investors, IFRS 18 should make reporting more structured and easier to compare in important areas. For preparers, however, implementation is not simply a financial-statement redesign project. It is a finance, systems, investor-relations, legal and governance project.
What changes under IFRS 18?
IFRS 18 is an IAS 1 replacement focused on presentation and disclosure in financial statements. It does not alter the accounting rules used to recognise revenue, expenses, assets or liabilities, and it does not change a company’s overall profit or loss.
Instead, it changes how income and expenses are grouped, how subtotals are shown and how company-defined performance measures are explained.
The new income-statement presentation model requires companies to classify income and expenses into categories including operating, investing, financing, income taxes and discontinued operations. IFRS 18 also requires two defined subtotals:
- Operating profit.
- Profit before financing and income taxes.
These subtotals are intended to give users a more consistent view of operating performance and results before financing and income tax.
A manufacturer, for example, will generally present income and expenses from core production and sales activity in operating profit. Interest expense on borrowings will normally be financing, while returns from certain investments may fall into the investing category.
The assessment can be more complex for businesses whose main activity involves investing in assets or providing financing to customers. This is particularly relevant to banks, insurers, leasing groups and some investment-focused businesses. Such companies cannot assume that the classification outcome used by an industrial company will apply to them. They need a documented analysis of their main business activities and the evidence supporting that conclusion.
Why readiness is more than a formatting exercise
Companies often begin with a draft profit-or-loss statement. That is useful, but it is not enough.
The first major task is creating a clear classification policy. Finance teams need to determine where recurring income and expense streams belong under the new categories. The policy should address complex items such as foreign-exchange differences, investment returns, financing income, interest expense, and gains or losses on assets.
These decisions need to be applied consistently across legal entities, business units and reporting periods. A group with different operating models may need more than one detailed assessment, particularly where one division finances customers and another does not.
The second task is data mapping. Existing chart-of-accounts structures may not contain enough detail to support the new presentation and disclosure requirements. Companies need to assess whether ledger data, consolidation tools and reporting packages can reliably identify the information required for each line item.
This is especially important for entities that present operating expenses by function, such as cost of sales, selling expenses and administrative expenses. IFRS 18 requires additional disclosure of specified expenses by operating line item, including depreciation, amortisation, employee benefits, impairment losses and inventory write-downs.
A business may know its total depreciation expense but be unable to split it reliably between cost of sales, distribution and administration without manual work. Where that is the case, the implementation project should address the underlying data process rather than leave the calculation to the year-end reporting timetable.
Management-defined performance measures need early attention
One of the most important IFRS 18 changes concerns management-defined performance measures, often called MPMs.
Many companies communicate measures such as adjusted operating profit, underlying earnings, adjusted EBITDA or profit before exceptional items. These can be useful to investors, but IFRS 18 requires greater discipline where a subtotal meets the definition of an MPM.
A qualifying MPM must be disclosed in a single note in the financial statements. The disclosure must include a clear description of the measure, how it is calculated, a reconciliation to the most directly comparable IFRS measure, and the income-tax and non-controlling-interest effects of reconciling items.
Readiness work should therefore include an inventory of performance measures used in public communications. The review should cover not only annual reports, but also earnings releases, investor presentations, management commentary, websites and other publicly available communications.
Labels matter as well. A measure described as “adjusted operating profit” may be understood differently by different companies or investors. Management should be able to explain what has been excluded, why it was excluded and whether the label remains appropriate.
For retail investors, the practical lesson is straightforward: adjusted measures may remain useful, but IFRS 18 should make it easier to see the bridge between management’s preferred measure and the comparable IFRS number. Investors should still read the reconciliation, not just the headline figure.
Aggregation, disaggregation and consequential changes
IFRS 18 introduces principles for grouping items with similar characteristics and separating items with different characteristics. The objective is to avoid hiding material information inside broad captions while avoiding excessive detail.
This can affect both primary statements and notes. A company may need to reconsider whether a large expense, gain or impairment is sufficiently different from other items to require separate presentation or clearer disclosure. A material restructuring cost, for example, may require more explanation than a routine administrative expense. Combining unrelated gains into a broad “other income” line could make it harder for investors to understand the source and sustainability of reported performance.
IFRS 18 also has consequential effects on other reporting requirements. For many companies, the indirect-method statement of cash flows will use operating profit as its starting point. Cash-flow classifications for interest and dividends are also revised for most companies.
There are also limits on presenting additional earnings-per-share measures, alongside changes to interim-reporting disclosures in the first year of application. A change in a cash-flow starting point or a non-GAAP earnings metric can affect investor communications, internal reporting packs and market expectations.
Digital reporting matters too. The IFRS Accounting Taxonomy includes separate entry points for IAS 1 and IFRS 18 during the transition period. Companies that file digitally should consider IFRS Accounting Taxonomy and XBRL requirements as part of system planning, not as a final filing-stage task.
A practical implementation plan
A sensible plan starts with a cross-functional steering group. Finance should lead the technical accounting analysis, but investor relations, legal, disclosure controls, tax, systems and internal audit all have roles.
The first phase should identify gaps in current income-statement captions, non-GAAP or adjusted measures, available source data, cash-flow reporting, EPS disclosures and digital tagging processes. The next phase should develop policies, map accounts, redesign reporting templates and test data quality.
Companies should also prepare a draft restated comparative period early. Waiting until the 2027 annual report is being prepared creates unnecessary pressure and increases the chance of inconsistent disclosures. Board members, audit committees and senior executives need to understand that IFRS 18 does not change total profit, but it can change how performance is described and perceived.
Worldwide adoption remains a local legal question
The IFRS 18 effective date of 2027 is set by the IASB, but legal applicability depends on adoption or endorsement rules in each jurisdiction.
For example, companies reporting under IFRS as adopted by the European Union must follow the EU endorsement process. As of 9 October 2026, the European Commission’s IAS Regulation materials indicated that the IFRS 18 adoption regulation was not yet in force pending publication in the Official Journal.
Companies should confirm local reporting obligations and whether early use is available before setting a final timetable. Implementation guidance is also continuing to develop. In September 2026, the IFRS Interpretations Committee published a tentative agenda decision on investing-category classification for certain assets that generate returns independently. The IASB was also discussing proposed amendments related to presentation of some tax charges. These developments were not final requirements as of the research date, but they show why companies should monitor guidance throughout the project.
The bottom line
IFRS 18 is a presentation standard, but its operational impact can be substantial. Companies that treat it as a late-stage disclosure exercise may face avoidable problems with comparative data, adjusted metrics, systems, XBRL reporting and investor communication.
The strongest implementation plans will combine technical accounting decisions with practical data, controls and communication work. For investors and business owners, the result should be more transparent reporting—but only if companies do the preparation now.