15.1 Identification & Impairment of Cash-Generating Units (CGUs)

15.1 Identification & Impairment of Cash-Generating Units (CGUs)

Core Principle: When an individual asset does not generate cash inflows that are largely independent of those from other assets, impairment testing cannot be performed on that asset in isolation. Instead, IAS 36 mandates that the asset be tested as part of the smallest identifiable group of assets generating independent cash inflows: its Cash-Generating Unit (CGU).

In modern corporate enterprises, standalone assets rarely produce separable revenue streams. A single stamping press in an automotive assembly plant, an aircraft jet engine, or the display shelving in a retail department store cannot generate cash inflows without being integrated into an entire operating facility. IAS 36 / AASB 136 Impairment of Assets establishes a comprehensive framework to aggregate assets into Cash-Generating Units (CGUs), determine their carrying amounts, allocate shared corporate overhead assets, and perform rigorous impairment testing.

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1. Foundational Definition of a Cash-Generating Unit

Paragraph 6 of IAS 36 provides the statutory definition of a Cash-Generating Unit:

A cash-generating unit is the smallest identifiable group of assets that generates cash inflows that are largely independent of the cash inflows from other assets or groups of assets.

Critical Technical Nuances

1. Focus on Cash Inflows, Not Outflows: The test for independence concerns cash inflows (gross revenues generated from external customers), not cash outflows. The fact that an operating division shares centralized administrative costs, human resources, or marketing expenses does not prevent it from qualifying as a separate CGU.
2. Smallest Identifiable Group: The standard requires aggregation at the lowest possible level. An entity cannot arbitrarily aggregate distinct retail stores or factories into a nationwide cluster if each individual store generates its own identifiable, independent customer cash flows.
3. Interdependence Threshold: Cash inflows must be largely independent. Complete commercial isolation is not required, but there must be operational autonomy in generating customer revenue.

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2. Practical Principles for Identifying CGUs (IAS 36.66–73)

Identifying an entity's CGUs requires seasoned professional judgment. Paragraph 68 of IAS 36 instructs preparers to evaluate two primary factors:

• How management monitors the entity's operations (e.g. by product lines, businesses, individual geographical locations, or regional territories); and
• How management makes operational decisions regarding continuing or disposing of the entity's assets and operations.

The Active Market Exception for Intermediate Products (IAS 36.70)

A common CPA exam scenario involves internal vertical integration, where one operating unit transfers its entire output to another internal division. Paragraph 70 of IAS 36 states:

If an active market exists for the output produced by an asset or group of assets, that asset or group of assets shall be identified as a cash-generating unit, even if some or all of the output is used internally.

When this rule applies:

• The upstream producing unit is classified as an independent CGU because it could sell its output externally on the open market.
• When calculating Value in Use (VIU) or Fair Value Less Costs of Disposal (FVLCD), management must adjust internal forecasts to reflect management's best estimate of future market prices (arm's length pricing) rather than internal transfer prices.
• Correspondingly, the downstream receiving unit's cash flow projections must incorporate market-equivalent input costs.

Consistency of Identification Over Time (IAS 36.72)

CGUs must be identified consistently from period to period for the same asset or types of assets. A change in CGU boundaries is permissible only if justified by an objective commercial change—such as a fundamental corporate reorganization, the disposal of a downstream facility, or the emergence of a new active market for intermediate output.

3. Determining the Carrying Amount of a CGU (IAS 36.75–79)

The fundamental measurement rule under paragraph 75 of IAS 36 is the consistency principle:

The carrying amount of a cash-generating unit shall be determined on a basis consistent with the way the recoverable amount of the cash-generating unit is determined.

$$\text{Impairment Loss} = \text{Carrying Amount of CGU} - \text{Recoverable Amount of CGU}$$

To ensure an apples-to-apples comparison, the items included in the CGU's carrying amount must directly correspond to the cash flows modeled in the recoverable amount (whether Value in Use or Fair Value Less Costs of Disposal).

Inclusions in the Carrying Amount of a CGU (IAS 36.76)

1. Direct Operating Assets: Tangible fixed assets (IAS 16), right-of-use assets (IFRS 16), and identifiable intangible assets (IAS 38) that are utilized exclusively by the CGU.
2. Allocated Shared Assets: A systematic portion of shared assets (e.g. regional warehouses, transport equipment) allocated on a reasonable and consistent basis.
3. Operating Working Capital (Inventories & Receivables): Included in the carrying amount if, and only if, the operating cash flows in the VIU calculation incorporate working capital changes (such as inventory replenishment and debtor collections). Excluding working capital from the carrying amount while including its cash flows in VIU would distort the impairment equation.
4. Allocated Goodwill: Any goodwill arising from business combinations allocated to the CGU under IAS 36.80.

Items Excluded from the CGU Carrying Amount

• Financing Debt & Bank Borrowings: Excluded because cash flows evaluated under Value in Use are unlevered (they reflect operating cash flows before debt service and financing interest, as required by IAS 36.50).
• Income Tax Balances (Current & Deferred Tax): Excluded because VIU is determined using pre-tax cash flows and pre-tax discount rates (IAS 36.50(b)).
• Corporate Assets that Cannot Be Allocated Reasonably: Excluded from the first-tier test.

The Critical Exception: Recognized Liabilities (IAS 36.78)

Paragraph 78 of IAS 36 sets out a vital exception where recognized liabilities must be deducted from both the carrying amount and the recoverable amount:

It may be necessary to consider some recognised liabilities to determine the recoverable amount of a cash-generating unit. This may occur if the disposal of a cash-generating unit would require the buyer to assume the liability.

The Decommissioning & Site Restoration Provision (IAS 37 / IAS 16)

Consider an offshore oil extraction facility or a mining pit. Environmental protection legislation dictates that whoever operates the site must decommission the infrastructure and remediate the land at the end of its useful life.

• The buyer of such a facility would purchase the physical plant subject to the restoration liability.
• When estimating Fair Value Less Costs of Disposal (FVLCD), the market bid price will be net of the decommissioning cost.
• To maintain mathematical consistency, the recognized provision for restoration (IAS 37) must be deducted from the carrying amount of the CGU before comparing it to the net recoverable amount.

$$\text{Carrying Amount of CGU} = \text{Carrying Amount of Operating Assets} - \text{Recognized Decommissioning Provision}$$ $$\text{Recoverable Amount of CGU} = \text{FVLCD (Net of assumed restoration liability)}$$

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4. Corporate Assets: Definition & Impairment Allocation (IAS 36.100–102)

Corporate assets are group or divisional assets other than goodwill that contribute to the future cash flows of both the CGU under review and other CGUs. Examples include:

• Corporate headquarters buildings and administrative centers;
• Centralized IT servers, ERP systems, and cloud infrastructure;
• Centralized research and development (R&D) facilities;
• Shared distribution hubs and executive transport fleets.

Defining Characteristics (IAS 36.100)

1. Corporate assets do not generate independent cash inflows from external parties.
2. Their carrying amount cannot be fully attributed to any single individual CGU.

The Two Allocation Methodologies

IAS 36 dictates two distinct impairment testing paths depending on whether the corporate asset can be allocated to individual CGUs on a reasonable and consistent basis:

                             Corporate Asset Allocation
                                         │
            ┌────────────────────────────┴────────────────────────────┐
            ▼                                                         ▼
     Allocable on a                                            NOT Allocable on a
  Reasonable & Consistent Basis                             Reasonable & Consistent Basis
            │                                                         │
            ▼                                                         ▼
     BOTTOM-UP TEST                                            TWO-TIER TEST
  • Allocate corporate asset                                • Tier 1: Test individual CGUs
    carrying amount to each CGU.                              excluding the corporate asset.
  • Test each enlarged CGU against                          • Tier 2: Test smallest group of CGUs
    its recoverable amount.                                   including the corporate asset.

1. The Bottom-Up Test (Allocable Corporate Assets)

If a corporate asset can be allocated on a reasonable and consistent basis (e.g. allocating a centralized warehouse based on the relative floor space utilized, or IT infrastructure based on user headcount or data throughput):

1. Allocate a portion of the corporate asset's carrying amount to each CGU.
2. Compare each CGU's enlarged carrying amount (operating assets + allocated corporate asset) to its recoverable amount.
3. Recognize any resulting impairment loss pro-rata across the unit's assets, including the allocated portion of the corporate asset.

2. The Two-Tier Top-Down Test (Unallocable Corporate Assets)

If a corporate asset (such as an iconic executive head office) cannot be allocated on a reasonable and consistent basis:

• Tier 1 (Individual Unit Level): Test each individual CGU for impairment excluding any portion of the corporate asset. Recognize any resulting impairment loss immediately in profit or loss to reduce the unit's operating assets to their recoverable amounts.
• Tier 2 (Group Level): Identify the smallest group of CGUs that includes the CGU under review and to which the corporate asset can be allocated. Compare the combined carrying amount of this group of CGUs (including the corporate asset and net of any Tier 1 impairment losses) to the recoverable amount of the combined group. Allocate any resulting Tier 2 impairment loss pro-rata across all assets in the group, including the corporate asset.

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5. Comprehensive Worked Scenario: Corporate Asset Allocation & Two-Tier Impairment Testing

Scenario Context

Pacific Industrial Group operates two distinct manufacturing cash-generating units: CGU North (specialized chemical production) and CGU South (industrial polymers). In addition, the group owns a Central Administrative Headquarters Building with a carrying amount of $6,000,000.

Management has determined that the Headquarters building contributes to the operations of both CGU North and CGU South, but its carrying amount cannot be allocated on a reasonable and consistent basis to either unit. Consequently, the two-tier top-down impairment testing methodology must be applied at 30 June 2026.

At 30 June 2026, the carrying amounts and recoverable amounts are as follows:

• CGU North: Carrying amount of identifiable operating assets = $12,000,000; Recoverable amount = $10,500,000.
• CGU South: Carrying amount of identifiable operating assets = $18,000,000; Recoverable amount = $20,000,000.
• Central Headquarters Building: Carrying amount = $6,000,000.
• Combined Group (North + South + Headquarters): Recoverable amount of the combined group = $31,050,000.

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Step-by-Step Technical Execution

Tier 1: Test Individual CGUs Excluding the Corporate Asset

• CGU North:

$$\text{Carrying Amount} = \$12,000,000$$ $$\text{Recoverable Amount} = \$10,500,000$$ $$\text{Tier 1 Impairment Loss} = \$12,000,000 - \$10,500,000 = \mathbf{\$1,500,000}$$

Recognition: The $1,500,000 impairment loss is recognized immediately in profit or loss, writing CGU North down to $10,500,000.

• CGU South:

$$\text{Carrying Amount} = \$18,000,000$$ $$\text{Recoverable Amount} = \$20,000,000$$

Outcome: Recoverable amount exceeds carrying amount. No Tier 1 impairment loss is recognized. (Note: Carrying amount is never written up above cost under the impairment standard).

Tier 2: Test the Smallest Group of CGUs Including the Corporate Asset

The combined group comprises CGU North (at its revised post-Tier 1 carrying amount), CGU South, and the Corporate Headquarters:

Comparing the group carrying amount to the group recoverable amount:

$$\text{Group Impairment Loss} = \$34,500,000 - \$31,050,000 = \mathbf{\$3,450,000}$$

Allocation of Tier 2 Impairment Loss Across the Group

Under IAS 36.102 and IAS 36.104, the $3,450,000 impairment loss is allocated pro-rata based on the relative carrying amounts of the components:

$$\begin{aligned} \text{Allocation to CGU North} &= \$3,450,000 \times \frac{\$10,500,000}{\$34,500,000} = \mathbf{\$1,050,000} \\ \text{Allocation to CGU South} &= \$3,450,000 \times \frac{\$18,000,000}{\$34,500,000} = \mathbf{\$1,800,000} \\ \text{Allocation to Headquarters} &= \$3,450,000 \times \frac{\$6,000,000}{\$34,500,000} = \mathbf{\$600,000} \end{aligned}$$

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Comprehensive Impairment Reconciliation Matrix

Journal Entries

$$\begin{aligned} \textbf{Tier 1 Entry (Individual Unit):} & & & \\ \textbf{Dr} & \quad \text{Impairment Loss — CGU North (Profit or Loss)} & \$1,500,000 & \\ \textbf{Cr} & \quad \text{Accumulated Impairment — CGU North Assets} & & \$1,500,000 \\ & & & \\ \textbf{Tier 2 Entry (Group Level):} & & & \\ \textbf{Dr} & \quad \text{Impairment Loss — CGU North (Profit or Loss)} & \$1,050,000 & \\ \textbf{Dr} & \quad \text{Impairment Loss — CGU South (Profit or Loss)} & \$1,800,000 & \\ \textbf{Dr} & \quad \text{Impairment Loss — Corporate HQ (Profit or Loss)} & \$600,000 & \\ \textbf{Cr} & \quad \text{Accumulated Impairment — CGU North Assets} & & \$1,050,000 \\ \textbf{Cr} & \quad \text{Accumulated Impairment — CGU South Assets} & & \$1,800,000 \\ \textbf{Cr} & \quad \text{Accumulated Impairment — Corporate HQ Building} & & \$600,000 \end{aligned}$$

CPA Exam Trap: Notice that CGU South suffered zero impairment in Tier 1 because its individual recoverable amount ($20,000,000) exceeded its carrying amount ($18,000,000). However, in Tier 2, CGU South absorbs $1,800,000 of the group impairment loss! This occurs because the corporate headquarters does not produce its own cash flows; its economic recovery relies entirely on the cash flows generated by North and South combined.