4.3 Cash-Generating Units (CGUs) and Goodwill Impairment

4.3 Cash-Generating Units (CGUs) and Goodwill Impairment

In many commercial environments, individual physical assets cannot generate independent cash inflows in isolation. A single conveyor belt, industrial boiler, or delivery truck operates as part of an integrated assembly line or distribution network. When an asset's recoverable amount cannot be estimated individually, IAS 36 Impairment of Assets requires testing at the level of the Cash-Generating Unit (CGU). Furthermore, because purchased goodwill acquired in a business combination does not generate separate cash flows, it must be allocated across CGUs for annual testing. In the ACCA Financial Reporting (FR) examination, testing CGUs involves strict sequential loss allocation rules, the application of the "floor rule", and the absolute prohibition on reversing goodwill impairment.

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1. Definition and Identification of a Cash-Generating Unit (CGU)

Under IAS 36.6, a Cash-Generating Unit (CGU) is defined as:

"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."

Bottom-Up Identification of CGUs (IAS 36.66–73)

Identifying whether cash inflows are largely independent requires management to examine operational realities:

• Management Monitoring: How does management monitor the entity's operations (e.g., by product lines, businesses, individual locations, or regional territories)?
• Commercial Operational Decisions: How does management make decisions about continuing or disposing of assets and operations?
• Internal Transfer Pricing / Intermediate Output (IAS 36.70): 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 CGU, even if some or all of the output is used internally by other business units. Internal transfer prices must be adjusted to arm's-length market prices to determine Value in Use.

                          CGU IDENTIFICATION CRITERIA
                                       |
       +-------------------------------+-------------------------------+
       |                                                               |
INDEPENDENT CASH INFLOWS                                ACTIVE MARKET FOR OUTPUT
* Generates distinct external cash inflows             * If an active market exists for intermediate
* Cannot be broken down into smaller                      output, the unit IS a CGU even if output
  sub-units with independent inflows                      is transferred internally to sister plants

Carrying Amount of a CGU (IAS 36.74–79)

The carrying amount of a CGU must be determined on a basis consistent with the way the recoverable amount of the CGU is determined:

• Included Assets: All assets that generate, or are directly used to generate, the future cash inflows used in determining the CGU's Value in Use (goodwill, property, plant and equipment, capitalised intangibles, and operating working capital if applicable).
• Liabilities Excluded: Under standard practice, recognized liabilities are excluded from the carrying amount of a CGU. Cash outflows associated with existing debt financing and payables are already excluded from VIU.
• Crucial Exception: A liability is included in the CGU carrying amount if, and only if, the disposal of the CGU would require the buyer to assume that liability, and the recoverable amount of the CGU cannot be determined without considering that liability (e.g., an unavoidable decommissioning and site restoration obligation under IAS 37).

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2. Goodwill Allocation & Timing of Annual Impairment Tests

Goodwill acquired in a business combination represents future economic benefits arising from other assets acquired that are not individually identified and separately recognized (e.g., workforce expertise and operating synergies).

Bottom-Up Allocation to CGUs (IAS 36.80)

Because goodwill does not generate cash flows independently of other assets, it must, from the acquisition date, be allocated to each of the acquirer's CGUs (or groups of CGUs) that are expected to benefit from the synergies of the combination, irrespective of whether other assets or liabilities of the acquiree are assigned to those units.

• Level of Allocation: Each CGU or group of CGUs to which goodwill is allocated must:
  1. Represent the lowest level within the entity at which goodwill is monitored for internal management purposes; and
  2. Not be larger than an operating segment determined in accordance with IFRS 8 Operating Segments.

Timing of Impairment Testing

• A CGU to which goodwill has been allocated must be tested for impairment at least annually, and whenever there is an indication that the unit may be impaired (IAS 36.90).
• The annual impairment test may be performed at any time during an annual period, provided the test is performed at the same time every year.

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3. The Strict Three-Tier Impairment Allocation Hierarchy

When the carrying amount of a CGU exceeds its recoverable amount, an impairment loss exists. Under IAS 36.104, the impairment loss must be allocated to reduce the carrying amount of the assets of the unit in the following strict sequential hierarchy:

                    CGU IMPAIRMENT LOSS ALLOCATION SEQUENCE
  ===============================================================================
  STEP 1: Specifically Damaged / Impaired Assets
          Write down any specific asset that is damaged, obsolete, or has a known
          individual impairment to its individual recoverable amount.
  -------------------------------------------------------------------------------
  STEP 2: Allocated Goodwill
          Allocate the remaining loss to reduce the carrying amount of any
          goodwill allocated to the CGU (write down goodwill to $0 if necessary).
  -------------------------------------------------------------------------------
  STEP 3: Pro-Rata Allocation to Other Non-Current Assets
          Allocate any residual loss across the other non-current assets of the
          CGU pro-rata based on the relative carrying amounts of each asset.
  ===============================================================================

[!IMPORTANT] Working Capital Exemption: Current assets (such as trade receivables, cash, and inventories) are governed by their own standards (IFRS 9, IAS 2). When allocating a CGU impairment loss pro-rata under Step 3, inventories and receivables are NOT written down. The pro-rata allocation applies exclusively to qualifying non-current assets (PPE and intangibles)!

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4. The "Floor Rule" & Redistribution of Excess Loss

Under IAS 36.105, in allocating an impairment loss under Step 3, the carrying amount of an individual asset shall not be reduced below the highest of:

1. Its Fair Value Less Costs of Disposal (if measurable);
2. Its Value in Use (if determinable); and
3. Zero.

Asset Carrying Amount Floor = Maximum of (Individual FVLCOD, Individual VIU, Zero)

                              THE FLOOR RULE
                                     |
                  +------------------+------------------+
                  |                                     |
    Asset with Measurable FVLCOD            Asset without Measurable FVLCOD
    Cannot be written down below            Reduced pro-rata until it reaches
    its individual FVLCOD floor             zero or all CGU loss is absorbed
                  |                                     ^
                  +-----> UNALLOCATED EXCESS ----------+|
                          (Redistribute pro-rata)

Mechanism of Redistribution

If the floor rule prevents the full theoretical pro-rata allocation of impairment loss to a particular asset:

1. The asset's carrying amount is reduced only down to its floor;
2. The remaining unallocated portion of the impairment loss is reallocated pro-rata to the other eligible non-current assets of the CGU that have not reached their individual floors (IAS 36.105).

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5. Reversal of Impairment Losses: Rules, Ceilings & The Goodwill Ban

Under IAS 36.111, an entity must assess at each reporting date whether there is an indication that an impairment loss recognized in prior periods for an asset (other than goodwill) may no longer exist or may have decreased.

Permissible Reversals: Individual Assets and CGUs

If there has been a change in the estimates used to determine the asset's recoverable amount since the last impairment loss was recognized, the impairment loss is reversed in profit or loss (or in OCI if the asset was revalued under IAS 16):

• The Reversal Ceiling (IAS 36.117): The increased carrying amount of an asset attributable to a reversal of an impairment loss shall not exceed the carrying amount that would have been determined (net of amortisation or depreciation) had no impairment loss been recognized in prior years.
• Examiner Focus: An asset can never be written up above its depreciated historical cost under IAS 36. Any increase above depreciated historical cost would constitute a revaluation under IAS 16, which is permissible only if the entity has formally adopted the revaluation model for that entire class.

                     IMPAIRMENT REVERSAL CEILING (IAS 36.117)
  $
  |
  |                         / (Original Depreciation Path)
  |                        / 
  |                       * <---- ABSOLUTE REVERSAL CEILING (Depreciated Historical Cost)
  |                      /| 
  |                     / | 
  |        Impairment  /  | 
  |         Write-down/   | <---- Reversal permitted ONLY up to this line
  |                  *    | 
  |                   \   | 
  |                    \  | 
  |                     \ * <---- Depreciated Impaired Path
  +-------------------------------------------------------- Time

Reversals in a CGU

A reversal of an impairment loss for a CGU is allocated pro-rata to the assets of the unit (excluding goodwill), based on their relative carrying amounts. In allocating the reversal, the carrying amount of an asset cannot be increased above the lower of its recoverable amount and the depreciated historical cost ceiling.

THE ABSOLUTE PROHIBITION ON REVERSING GOODWILL IMPAIRMENT

IAS 36.124 Rule: "An impairment loss recognized for goodwill SHALL NOT be reversed in a subsequent period."

Why is goodwill reversal strictly banned?

• Any subsequent increase in the recoverable amount of a CGU after goodwill has been impaired is inevitable evidence of internally generated goodwill rather than a genuine reversal of the purchased goodwill.
• Because IAS 38.48 strictly prohibits the recognition of internally generated goodwill, allowing goodwill impairments to be reversed would indirectly violate IAS 38 by capitalising internally generated goodwill onto the balance sheet.
• This prohibition is absolute and permanent, even if the event that caused the original impairment is completely reversed by economic recovery.

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6. Comprehensive Worked Example: CGU Impairment with Floor Rule

Scenario Details

Nexus Telematics operates a specialized commercial fleet tracking division, which represents a defined Cash-Generating Unit (CGU). At 31 December 20X5, due to the loss of a major logistics contract and intense software pricing pressure, management carries out an impairment review of the CGU.

The carrying amounts of the CGU's assets at 31 December 20X5 are:

• Allocated Purchased Goodwill: $120,000
• Operations Building: $400,000
• Specialized Server Hardware: $300,000
• Proprietary Tracking Software Licence: $100,000
• Operating Net Working Capital (Inventories and Receivables): $80,000
• Total Carrying Amount of CGU: $1,000,000

Impairment Review Appraisals & Physical Inspection:

1. A physical audit of the server hardware revealed that a primary server rack was completely destroyed by water leakage. Its value is negligible, and it has an individual recoverable amount of $0 (its carrying amount within server hardware is $40,000).
2. An independent commercial real estate appraisal confirms that the Operations Building has an individual Fair Value Less Costs of Disposal (FVLCOD) of $370,000.
3. The recoverable amount of the CGU as a whole is determined to be $650,000 based on Value in Use.

Step 1: Total Impairment Loss on the CGU

Total CGU Carrying Amount = $1,000,000
CGU Recoverable Amount    = $650,000
Total Impairment Loss     = $1,000,000 - $650,000 = $350,000

Step 2: Sequential Allocation of Impairment Loss

Tier 1: Specifically Damaged Asset

• Destroyed server rack written off directly: $40,000 write-down.
• Remaining server hardware carrying amount = $300,000 - $40,000 = $260,000.
• Remaining impairment loss to allocate = $350,000 - $40,000 = $310,000.

Tier 2: Write Off Allocated Goodwill

• Goodwill of $120,000 is written down in full to $0.
• Remaining impairment loss to allocate = $310,000 - $120,000 = $190,000.

Tier 3: Pro-Rata Allocation to Remaining Qualifying Non-Current Assets

• Working capital ($80,000) is excluded from pro-rata allocation under IAS 36.
• Eligible non-current assets and their pre-allocation carrying amounts:
  • Operations Building: $400,000
  • Server Hardware (remaining): $260,000
  • Software Licence: $100,000
  • Total Eligible Base: $760,000

Initial Theoretical Pro-Rata Share of $190,000 Loss:

Building Share        = $190,000 * (400,000 / 760,000) = $100,000
Resulting Building    = $400,000 - $100,000 = $300,000

Server Hardware Share = $190,000 * (260,000 / 760,000) = $65,000
Resulting Server      = $260,000 - $65,000 = $195,000

Software Licence Share = $190,000 * (100,000 / 760,000) = $25,000
Resulting Software     = $100,000 - $25,000 = $75,000

Step 3: Application of the Floor Rule (IAS 36.105)

• Building Floor Check: The building's individual FVLCOD is $370,000.
  • Under the floor rule, the building cannot be reduced below $370,000.
  • Therefore, the maximum impairment loss that can be allocated to the building is: $400,000 - $370,000 = $30,000.
  • The theoretical loss was $100,000. This leaves an unallocated excess loss of: $100,000 - $30,000 = $70,000.
• Redistribution of Unallocated $70,000 Loss:
  • The $70,000 must be redistributed pro-rata across the remaining eligible assets (Server Hardware and Software Licence) based on their relative carrying amounts:
  • Relative Base = Server Hardware ($260,000) + Software Licence ($100,000) = $360,000.

Additional Loss to Server Hardware = $70,000 * (260,000 / 360,000) = $50,556
Additional Loss to Software Licence = $70,000 * (100,000 / 360,000) = $19,444

Step 4: Final Summary of CGU Asset Carrying Amounts

Journal Entry for CGU Impairment:

Dr Impairment Loss (Profit or Loss)          $350,000
   Cr Goodwill                                        $120,000
   Cr Operations Building                              $30,000
   Cr Server Hardware ($40k + $65k + $50,556)         $155,556
   Cr Software Licence ($25k + $19,444)                $44,444

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7. Common Exam Traps & ACCA Examiner Tips

[!WARNING] ACCA Examiner Trap 1: The Floor Rule Ignored Candidates frequently compute mechanical pro-rata percentages and reduce all non-current assets without checking if an asset has a known individual FVLCOD. If a building has an appraisal of $370,000, reducing it to $300,000 is an immediate exam failure point. The floor rule is strictly mandatory.

[!WARNING] ACCA Examiner Trap 2: The Working Capital Allocation Fallacy Never allocate IAS 36 pro-rata impairment losses to inventory, trade receivables, or cash. Inventories are evaluated separately under IAS 2 (lower of cost and NRV) and receivables under IFRS 9 (expected credit losses).

[!TIP] ACCA Examiner Tip: The Goodwill Reversal Ban is Absolute Examination questions occasionally describe a strong economic resurgence two years after an impairment loss and ask candidates to calculate the reversal. Candidates who reverse goodwill receive zero marks. Goodwill impairment can NEVER be reversed under IAS 36.124.

[!TIP] ACCA Examiner Tip: Reversal Ceiling Discipline For individual assets within a CGU, never reverse an impairment loss above what the asset's depreciated historical carrying amount would have been had no impairment occurred.