ASC 280
Active
Segment Reporting
Governs segment reporting based on the chief operating decision maker's perspective, including the 75% reporting sufficiency test and significant segment expense disclosure.
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Conceptual Framework Linkage
The "management approach" – seeing the business through management's own eyes
ASC 280 pioneered the "MANAGEMENT APPROACH" to segment reporting: rather than defining segments using externally imposed criteria (e.g. industry classification codes), segments are identified based on the INTERNAL organisational structure management itself actually uses to run the business and allocate resources – maximising relevance by showing users the business the SAME way management sees it.
The direct model IFRS 8 was built on
When the IASB developed IFRS 8, it deliberately modelled it CLOSELY on the pre-existing US standard (SFAS 131, now ASC 280) – making ASC 280 one of the very few Topics in the entire Codification where an IFRS standard was essentially built by ADOPTING an existing US GAAP standard's core methodology, rather than the two frameworks converging independently or from different starting points.
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Scope & Applicability
Public entities specifically
ASC 280 applies to PUBLIC entities – those with equity or debt securities traded in a public market, or required to file with a regulatory agency for the purpose of issuing securities. Private companies are NOT required to present segment disclosures, closely mirroring IFRS 8's own scope limitation to entities whose securities are (or are in the process of being) publicly traded.
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The Chief Operating Decision Maker (CODM)
A function, not necessarily a single named individual
The CODM is a FUNCTION – identifying the person or GROUP of persons responsible for allocating resources and assessing the performance of the entity's operating segments. This is typically the CEO, but could be a group such as the executive management committee – the identification depends on FACTS AND CIRCUMSTANCES, not a fixed job title, exactly mirroring IFRS 8's own functional (rather than titular) CODM concept.
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The 75% Reporting Sufficiency Test
Ensuring enough of the business is actually disclosed
If the TOTAL external revenue reported by all identified reportable segments is LESS THAN 75% of the entity's total consolidated revenue, ADDITIONAL operating segments must be identified as reportable (even if they individually fail the 10% tests) until at least 75% of total revenue is captured within reportable segments – again, the SAME 75% threshold used under IFRS 8.
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ASU 2023-07 – Significant Segment Expense Disclosure
A genuinely recent enhancement, ahead of an equivalent IFRS 8 amendment
ASU 2023-07 (effective for fiscal years beginning after 15 December 2023) EXPANDED ASC 280's disclosure requirements, requiring disclosure of SIGNIFICANT SEGMENT EXPENSES that are REGULARLY PROVIDED to the CODM and included in the reported segment profit/loss measure, along with a description of "other" segment items not separately disclosed. This is one of the most SUBSTANTIVE recent enhancements to US segment reporting, going beyond what IFRS 8 currently requires in equivalent detail – though the IASB has separately pursued its own primary financial statements project addressing some related disclosure gaps, without yet reaching an identical amendment.
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Worked Example – Applying the 10% Tests
Identifying reportable segments from raw operating segment data
Example: Four operating segments, testing against the revenue threshold
An entity has four operating segments with total revenue (including intersegment) of $50,000,000, $30,000,000, $15,000,000, and $5,000,000 – combined total $100,000,000.
10% threshold = $10,000,000. Segments A ($50M), B ($30M), and C ($15M) EXCEED the threshold and are reportable on the revenue test alone. Segment D ($5M) does NOT meet the revenue test, but must still be checked against the profit/loss and assets tests before being excluded – if it fails all three, it may be combined into an "All Other" category rather than separately reported, PROVIDED the 75% sufficiency test (Section 4) is still satisfied by the three reportable segments already identified.
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Entity-Wide Disclosures
Required even for single-segment entities
Certain ENTITY-WIDE disclosures are required REGARDLESS of the segment structure – including revenue from external customers for each group of similar products/services, revenue and long-lived assets attributed to the entity's home country versus all foreign countries in aggregate (and by individual foreign country if material), and information about MAJOR CUSTOMERS (a single external customer representing 10% or more of total revenue) – again mirroring IFRS 8's own entity-wide disclosure requirements closely.
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Disclosure Requirements
Summary reference (see Sections 5–7 for full detail)
In addition to the per-segment measures, entities must provide a RECONCILIATION of total reportable segment revenues, profit/loss, and assets to the corresponding consolidated totals – ensuring the segment disclosures tie back cleanly to the primary financial statements, consistent with IFRS 8's own reconciliation requirement.
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Critical Judgments & Estimates
Where judgement matters most
SIGNIFICANT JUDGEMENTS
Identifying the CODM, particularly for committee-based or matrix management structuresDetermining whether operating segments genuinely meet the aggregation criteriaIdentifying which segment expenses are "significant" and "regularly provided" to the CODM under ASU 2023-07
SIGNIFICANT ESTIMATES
Allocating shared/corporate costs to segments where the CODM's own internal reporting requires an allocation methodology
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ASC 280 vs IFRS 8
Comparison – ASC 280 vs IFRS 8
FeatureUS GAAP (ASC 280)IFRS (IFRS 8)
Management approachOriginated here; adopted virtually unchanged by IFRS 8Directly modelled on ASC 280 – near-identical core methodology
10% quantitative thresholds / 75% sufficiency testYes, as describedIdentical thresholds and mechanics
Significant segment expense disclosureREQUIRED since ASU 2023-07 (effective FY2024)No equivalent amendment yet issued – a current, real-time divergence pending further IASB action
ScopePublic entities (SEC filers/publicly traded securities)Entities whose debt/equity is traded (or in the process of being traded) in a public market – closely parallel
ASC 280 and IFRS 8 remain among the most tightly converged pairs in the entire US GAAP/IFRS landscape – the 2023 US-specific expense disclosure enhancement is the first genuinely notable divergence to emerge in years between these two otherwise near-identical standards.
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Statement Mapping
Where every ASC 280 event lands
EventStatement(s) affectedNotes
Segment-level disclosuresNotes onlyNo direct impact on any consolidated primary statement
Reconciliation of segment totals to consolidated figuresNotes onlyTies segment disclosures back to the consolidated BS/IS totals
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Related Topics
Cross-reference map
TopicConnection
ASC 270Segment information is also required in interim (quarterly) reports for public entities
ASC 350Goodwill impairment testing uses reporting units that are frequently, though not always, aligned with operating segments
ASC 810Consolidation – supplies the consolidated totals segment disclosures must reconcile to
Quick-reference glossary preview
Operating segment
A component of an entity meeting all three defining criteria – the base unit of analysis before aggregation and reportability testing.
Reportable segment
An operating segment (or aggregation of segments) that meets the quantitative thresholds, or is otherwise designated reportable, and is separately disclosed.
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Quick-Reference Glossary
Chief operating decision maker (CODM)
The function – an individual or group – responsible for allocating resources to, and assessing the performance of, an entity's operating segments.
Management approach
The segment identification philosophy basing reportable segments on the entity's actual internal management reporting structure, rather than externally imposed classification criteria.
Financial statement key
BS Balance sheet
IS Income statement
SE Statement of changes in equity
OCI Other comprehensive income
SCF Statement of cash flows