Write-down recognized when goodwill assigned to a cash-generating unit or reporting unit is no longer supported by the unit's measured value.
Goodwill impairment is a write-down recognized when the value supporting acquired goodwill falls below the amount required by the applicable impairment test. Goodwill is not tested as a standalone asset: under IFRS it is tested within a cash-generating unit or group of units, while U.S. GAAP tests it at the reporting-unit level.
The charge reduces goodwill and reported earnings. It does not require a current-period cash payment, but it can reveal that an earlier acquisition has underperformed or that its expected benefits have weakened.
Goodwill does not generate cash flows independently. Expected synergies, workforce capability, market access, and going-concern value usually benefit a business or operating unit together with other assets. The impairment test therefore compares a broader unit with its measured value.
This creates an analytical limitation: strong assets or operations within the same testing unit can provide headroom that delays impairment of acquisition-related goodwill. The level at which goodwill is assigned matters.
Under IAS 36, goodwill acquired in a business combination is allocated to the cash-generating units or groups of units expected to benefit from the combination. Each unit containing goodwill is tested annually and whenever impairment indicators arise.
The core comparison is:
Recoverable amount is the higher of:
If the CGU is impaired, the loss reduces goodwill first. Any remaining loss is allocated to other assets pro rata, subject to limits that prevent an asset from being reduced below specified floors.
Assume a cash-generating unit has:
| Component | Carrying amount |
|---|---|
| Working capital and other net assets | $120 million |
| Property and identifiable intangible assets | $300 million |
| Goodwill | $80 million |
| Total CGU | $500 million |
The unit’s value in use is $440 million, and fair value less costs of disposal is $425 million. Recoverable amount is the higher value, $440 million.
The entire $60 million loss is allocated to goodwill first, reducing goodwill from $80 million to $20 million. The other assets are not reduced in this example.
If recoverable amount were $390 million, the $110 million total loss would eliminate all $80 million of goodwill. The remaining $30 million would then be allocated to other CGU assets under IAS 36’s allocation limits.
Under ordinary U.S. GAAP, goodwill is assigned to reporting units. An entity can first perform an optional qualitative assessment to determine whether it is more likely than not that a reporting unit’s fair value is below its carrying amount.
When the quantitative test is required, the impairment loss is generally the amount by which the reporting unit’s carrying amount exceeds its fair value, limited to the goodwill assigned to that unit:
This is not the IAS 36 recoverable-amount test. U.S. GAAP also provides accounting alternatives for eligible private companies and not-for-profit entities, so the disclosed accounting policy must be checked.
| Feature | IFRS | Ordinary U.S. GAAP |
|---|---|---|
| Testing unit | Cash-generating unit or group of units | Reporting unit |
| Measurement benchmark | Higher of value in use and fair value less costs of disposal | Reporting-unit fair value |
| Annual test | Required | Required, subject to applicable alternatives |
| Indicator-based test | Required when indicators arise | Required when triggering events arise |
| Loss allocation | Goodwill first, then other CGU assets subject to floors | Limited to reporting-unit goodwill under the goodwill test |
| Later reversal of goodwill loss | Prohibited | Prohibited under ordinary model |
Because the unit of account and valuation benchmark differ, the same acquisition can produce different impairment timing or amounts under the two frameworks.
Goodwill is tested annually even without a warning signal, but interim testing may be required when conditions deteriorate. Relevant evidence can include:
No single indicator automatically determines the impairment amount. The unit’s cash flows, carrying amount, market evidence, and reporting framework still need to be evaluated.
Goodwill impairment tests can be highly sensitive to:
A small change in a long-range assumption can materially change estimated value. Readers should examine disclosed headroom and sensitivity information rather than focusing only on whether management recorded a charge.
A goodwill impairment generally:
Analysts often present adjusted earnings excluding impairment, but that does not erase the acquisition economics. Review both the adjusted operating trend and management’s original capital-allocation decision.
Goodwill impairment is estimate-intensive and depends on the reporting framework, unit allocation, forecasts, and valuation evidence. This page is educational and does not provide accounting, audit, tax, legal, valuation, or investment advice.