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IFRS 8

Operating Segments

IFRS 8 requires an entity whose debt or equity securities are publicly traded to disclose information enabling users to evaluate the nature and financial effects of the business activities it engages in and the economic environments it operates in, identifying operating segments using a 'management approach' based on internal reports reviewed by the chief operating decision maker. [S1]

Effective 2009-01-01Related: IAS 1 · IAS 34 · IFRS 12 · IFRS 3

Overview

IFRS 8 replaced the earlier risk-and-rewards-based segmentation model (IAS 14) with a 'management approach': operating segments are identified on the basis of the internal reports about components of the entity that are regularly reviewed by the chief operating decision maker (CODM) to allocate resources and assess performance, rather than being defined afresh for external reporting purposes. [S1] An operating segment engages in business activities from which it may earn revenues and incur expenses, has discrete financial information available, and its operating results are regularly reviewed by the CODM. Reportable segments are those meeting specified quantitative thresholds (10% of combined revenue, profit or loss, or assets), subject to an overall requirement that reportable segments' external revenue represents at least 75% of total consolidated revenue, adding further segments if necessary to meet this test. [S2]

Why it matters

Segment disclosure is often the single most useful note in a diversified group's financial statements for an analyst or lender trying to understand which parts of the business are actually driving performance, since consolidated totals can mask a strong division subsidising a weak one. Because IFRS 8 defines segments by reference to how management itself actually monitors the business (not an externally imposed definition), getting the CODM identification and segment aggregation judgements right or wrong directly affects whether users see the business the way management sees it internally, which is precisely the standard's intended benefit.

Scope

Applies to the separate or individual financial statements of an entity (and to consolidated financial statements of a group) whose debt or equity instruments are traded in a public market, or that files, or is in the process of filing, financial statements with a securities commission or other regulatory organisation for the purpose of issuing instruments in a public market. An entity that voluntarily discloses segment information not meeting these criteria must not describe that information as segment information unless it complies with IFRS 8.

Key definitions

term
Operating segment
definition
A component of an entity that engages in business activities from which it may earn revenues and incur expenses, whose operating results are regularly reviewed by the chief operating decision maker, and for which discrete financial information is available.
term
Chief operating decision maker (CODM)
definition
A function, not necessarily a manager with a specific title, that allocates resources to and assesses the performance of the operating segments of an entity; could be an individual (e.g. a CEO) or a group (e.g. a management committee).
term
Reportable segment
definition
An operating segment (or aggregation of operating segments meeting the aggregation criteria) that meets specified quantitative thresholds and is therefore separately disclosed.
term
Aggregation criteria
definition
Conditions permitting two or more operating segments to be combined into a single reportable segment if they have similar economic characteristics and are similar in specified respects (nature of products/services, production processes, customer types, distribution methods, and regulatory environment).
term
Segment profit or loss
definition
A measure of a segment's operating results, reported in a manner consistent with the measure used internally by the CODM for resource allocation and performance assessment, which may differ from IFRS measurement principles.

Recognition

IFRS 8 does not govern the recognition or measurement of transactions; it governs how the entity's existing internal management reporting structure is used to identify and report operating segments externally. Segment information is presented using the same measures the CODM uses internally, even where those measures depart from IFRS recognition and measurement principles (for example, using a non-IFRS internal profit measure), provided the differences are explained and reconciled to the entity's IFRS-based totals.

Initial measurement

Not a distinct concept; the measurement basis for segment information is whatever basis the CODM actually uses internally for resource allocation and performance assessment decisions, which is a factual question about internal reporting practice, not a prescribed IFRS measurement basis.

Subsequent measurement

Segment information continues to be reported on the same basis used internally each period, with a description of the measurement basis for segment profit or loss, assets and liabilities, and an explanation of any changes from prior periods (for example, following a reorganisation of the entity's internal structure that changes how the CODM reviews the business, requiring restatement of corresponding prior-period segment information unless impracticable).

Presentation

For each reportable segment, an entity discloses a measure of profit or loss, and specified items included within that measure if regularly reviewed by the CODM (external and intersegment revenue, interest revenue and expense, depreciation and amortisation, material non-cash items, and income tax expense/income). Total assets and liabilities are disclosed by segment if regularly provided to the CODM. Reconciliations are required between the totals of reportable segments' revenues, profit or loss, assets and liabilities, and the entity's corresponding consolidated amounts, with all material reconciling items separately identified and described.

Disclosure checklist

  • General information: factors used to identify reportable segments (including the basis of organisation, e.g. by product/service, geography, or a combination), and the types of products and services from which each reportable segment derives revenue.
  • A measure of profit or loss for each reportable segment, and a measure of total assets and liabilities if such amounts are regularly provided to the CODM, together with the specified items required if included in the segment measure reviewed by the CODM.
  • Reconciliations of total reportable segments' revenue, profit or loss, assets, liabilities and other material items to the corresponding entity totals, with material reconciling items separately identified and described.
  • Entity-wide disclosures (required even for an entity with a single reportable segment): revenue from external customers for each product and service (or group of similar products/services); revenue from external customers attributed to the entity's country of domicile and to all foreign countries in total (and individually material countries); non-current assets located in the country of domicile versus foreign countries; and information about the extent of reliance on major customers (any single external customer contributing 10% or more of total revenue).
  • A description of any changes in the basis of segmentation or in the measurement of segment profit or loss from prior periods, and the effect of any such changes.

Practical treatment

The practical starting point is genuinely identifying the CODM function and the internal reports actually reviewed for resource allocation and performance assessment — not simply defaulting to legal entity structure, product lines, or a generic geographic split that seems intuitive but does not reflect how the business is actually managed internally. Segment aggregation should be assessed against the specific similarity criteria (products/services, production processes, customers, distribution, regulatory environment), not applied loosely to produce a tidier, smaller number of reported segments than management's internal reporting actually supports. See nigeria_notes for the practical Nigerian context, particularly for NGX-listed companies.

Common mistakes

  • Defining segments based on an external, product-line-based organisational chart rather than the internal reports actually reviewed by the CODM.
  • Aggregating operating segments into fewer, tidier reportable segments without genuinely meeting the specific aggregation criteria (similar economic characteristics, products, processes, customers, distribution, regulation).
  • Omitting entity-wide disclosures (products and services, geographic information, major customer reliance) on the mistaken assumption they only apply to entities with multiple reportable segments.
  • Failing to reconcile segment totals to consolidated entity totals, or omitting a description of material reconciling items.
  • Not restating prior-period segment information following an internal reorganisation that changes the composition of reportable segments, where restatement is practicable.
  • Using segment profit measures that quietly diverge from what the CODM actually reviews, effectively presenting an externally curated, rather than a genuine management-approach, segmentation.

CFO checklist

  • Document the actual identity of the CODM function and the specific internal reports it reviews for resource allocation and performance assessment.
  • Reassess operating segment identification whenever the internal reporting structure changes materially (e.g. after a reorganisation or acquisition).
  • Test any proposed aggregation of operating segments against all the specific aggregation criteria, not just a general sense of similarity.
  • Prepare the required entity-wide disclosures (products/services, geography, major customers) even if the entity has only one reportable segment.
  • Maintain a clear reconciliation of segment totals to consolidated IFRS totals, with reconciling items identified and explained.
  • For NGX-listed entities, align segment disclosure practice with NGX/SEC continuing disclosure obligations and market expectations for sector-relevant segmentation.

FAQs

q
We organise our external annual report by product line, but our CEO actually reviews performance by region — which basis do we use for segment reporting?
a
The region-based view, since IFRS 8 requires operating segments to be identified based on the internal reports regularly reviewed by the chief operating decision maker for resource allocation and performance assessment, not on how the entity chooses to present information externally for other purposes.
q
Do we need to disclose geographic revenue and major customer information if we only have one reportable segment?
a
Yes. The entity-wide disclosures about products and services, geographic areas, and reliance on major customers are required regardless of the number of reportable segments an entity has, including entities with only a single reportable segment.
q
Can we combine two operating segments into one reportable segment just to reduce the amount of disclosure?
a
Only if they meet the specific aggregation criteria — similar economic characteristics and similarity in the nature of products/services, production processes, customer types, distribution methods, and regulatory environment; aggregating purely to reduce disclosure volume, without genuinely meeting these criteria, is not permitted.

Nigeria application notes

Regulatory overlay

IFRS 8 applies in full to Nigerian public interest entities whose securities are publicly traded (or in the process of being offered to the public) under the FRCN Act 2011 mandate. [S3] NGX-listed companies are subject to continuing disclosure obligations under NGX's own rules, including periodic (quarterly, semi-annual, and annual) financial reporting, which provides the practical cadence within which segment information is disclosed to the Nigerian market alongside the entity's annual financial statements. [S4][S5]

Tax interaction (Nigeria)

IFRS 8 segment reporting has no direct effect on a Nigerian entity's companies income tax computation, since Nigerian CIT is assessed on a whole-entity (or, for a group, separate-legal-entity) basis at the standard illustrative rate of 30% (subject to the small-company exemption and other qualifying conditions) under the Nigeria Tax Act 2025, not segment by segment; however, segment revenue and profit disclosures can be a useful cross-check when reviewing the reasonableness of a group's overall tax computation and transfer pricing positions across business lines. [S_TAX1][S_TAX2] Nigerian rates, thresholds, exemptions, incentives and filing rules referenced in this file (including CIT, VAT, withholding tax categories, and the small-company threshold) should be independently verified against the Nigeria Tax Act 2025, the Nigeria Tax Administration Act 2025, CAC/CAMA/SEC/NGX requirements, and current NRS practice at the reporting or filing date, since thresholds, rates and reliefs are subject to periodic revision and to sector- or entity-specific qualifying conditions. This file does not constitute legal or tax advice. [S_TAX1][S_TAX2]

FX considerations

For Nigerian groups with segments operating in different countries or currencies, geographic entity-wide disclosures under IFRS 8 should reflect revenue from external customers attributed to Nigeria versus foreign countries; naira volatility affects the comparability of segment revenue and profit figures period to period where a foreign segment's results are translated into naira for consolidated segment reporting, and this translation effect should be considered when reconciling and explaining segment performance trends.

SME practical note

IFRS 8 applies only to entities with publicly traded securities (or in the process of a public offering), so most Outliers SME and privately held clients are not required to apply it; however, Outliers recommends that growth-stage Nigerian companies planning an eventual NGX listing or public debt issuance begin thinking about their internal management reporting structure with segment disclosure in mind, since retrofitting a CODM-consistent segment reporting structure shortly before an IPO is more difficult than building it in from the start.

Common Nigerian pitfalls

  • Applying IFRS 8 segment disclosure to a private, non-publicly-traded Nigerian entity when it is not required to do so (though voluntary disclosure is permitted if it genuinely complies with IFRS 8).
  • Presenting segments based on external market-facing product categories rather than the Nigerian CODM's actual internal review structure.
  • Failing to provide entity-wide geographic and major customer disclosures for a single-segment Nigerian group with material export or international revenue.
  • Not adjusting segment information for a material internal reorganisation, leaving stale segment definitions in place.

FRC pronouncements

No FRCN pronouncement specific to IFRS 8 segment identification has been identified; the relevant Nigerian regulatory context is primarily NGX/SEC continuing disclosure obligations for listed companies, operating alongside FRCN's general IFRS compliance mandate. [S3][S6]

Worked examples

Applying the quantitative thresholds to identify reportable segments

A Nigerian group has four operating segments identified based on its CODM's internal reports: Manufacturing (external revenue ₦600,000,000), Logistics (external revenue ₦150,000,000), Retail (external revenue ₦80,000,000), and Financial Services (external revenue ₦40,000,000). Total consolidated external revenue is ₦870,000,000.

Facts

Workings

10% revenue threshold: 870,000,000 x 10% = 87,000,000

Manufacturing (600,000,000) exceeds the threshold: reportable.

Logistics (150,000,000) exceeds the threshold: reportable.

Retail (80,000,000) does not exceed the threshold (80,000,000 < 87,000,000): not automatically reportable on the revenue test alone (assessed here without reference to the separate profit/loss or assets thresholds, which could independently qualify it).

Financial Services (40,000,000) does not exceed the threshold: not automatically reportable.

75% test: reportable segments' external revenue (Manufacturing + Logistics = 750,000,000) as a proportion of total external revenue (870,000,000) = 86.2%, which already exceeds 75%, so no additional segment needs to be added purely to meet the 75% test.

Reconciling segment profit to consolidated profit before tax

A Nigerian group's reportable segments show total segment profit of ₦320,000,000, measured on the same basis reviewed by the CODM. Reconciling items include unallocated corporate head office costs of ₦35,000,000 and a fair value gain of ₦12,000,000 on an investment property not allocated to any segment, both excluded from the CODM's segment profit measure.

Facts

Workings

Consolidated profit before tax: 320,000,000 - 35,000,000 + 12,000,000 = 297,000,000

Sources & citations

  1. [S1]IFRS 8 Operating Segments — IFRS Foundationaccessed 2026-07-18
  2. [S2]IFRS 8 — Operating Segments (standard summary) — IAS Plus, Deloitteaccessed 2026-07-18
  3. [S3]IFRS - Use of IFRS Standards by jurisdiction: Nigeria — IFRS Foundationaccessed 2026-07-18
  4. [S4]NGX's Rules on the Authority of The Exchange — Nigerian Exchange Limited (NGX)accessed 2026-07-18
  5. [S5]Requirements for Listing on the Main Board of the Nigeria Stock Exchange — Alliance Law Firmaccessed 2026-07-18
  6. [S6]Enhanced Disclosure & Governance Obligations For Listed Companies In Nigeria — Global Law Expertsaccessed 2026-07-18
  7. [S_TAX1]Nigeria Tax Act, 2025 has been signed – highlights — EY Globalaccessed 2026-07-18
  8. [S_TAX2]The Nigerian Tax Reform Acts — PwC Nigeriaaccessed 2026-07-18
Last reviewed 2026-07-18 · Reviewer: Rafiu Olawuyi, FCA (Author / Technical Reviewer)