Impairment Testing Is Where Management Admits an Acquisition Failed
Assets carried above their recoverable amount must be written down. The timing of that admission is a judgement, and the judgement is made by the people who bought the asset.
The Principle
An asset should not be carried on the balance sheet above the amount that can be recovered from it, whether through use or sale.
When circumstances suggest the carrying value is no longer supportable, an impairment test compares carrying value to recoverable amount and writes down the difference.
The charge is non cash. Money was spent when the asset was acquired, and the impairment merely acknowledges that it will not be recovered.
What Triggers a Test
Goodwill and indefinite lived intangibles are tested at least annually regardless of circumstances. Other assets are tested when indicators appear.
| Indicator | Example |
|---|---|
| Market capitalisation below book value | The market disagrees with the balance sheet |
| Significant adverse change | Regulation, competition, technology |
| Worse performance than planned | Acquisition missing its case |
| Rising discount rates | Reduces present value of future flows |
| Restructuring or disposal plans | Asset use is changing |
Trading below book value is the loudest indicator. It means the market has already concluded the assets are worth less than the balance sheet claims, and the accounting is following rather than leading.
Where the Judgement Lives
Recoverable amount is usually estimated as the present value of expected future cash flows from the asset or the group of assets it belongs to.
That requires forecasting cash flows, choosing a growth rate, and selecting a discount rate. Each is a judgement, and modest changes to any of them can determine whether an impairment exists at all.
The people making those judgements are the management team that approved the acquisition. Recognising an impairment is an admission that the purchase price was too high, which is a difficult thing to conclude about your own decision.
The predictable consequence is that impairments tend to arrive late, and frequently arrive in clusters shortly after a change of chief executive, when a new leader has every incentive to clear the accumulated problems and attribute them to a predecessor.
How Goodwill Concentrates the Issue
Goodwill arises when an acquirer pays more than the fair value of identifiable net assets. It is not amortised, so it sits on the balance sheet indefinitely until tested.
The test is performed at the level of a cash generating unit or reporting unit, and how those units are defined matters enormously. A failing acquisition folded into a larger successful unit may never show an impairment, because the unit as a whole still supports the carrying value.
This is a legitimate application of the rules and it is also how a bad deal disappears from view.
What the Charge Actually Tells You
The charge itself is backward looking and non cash, so adjusting it out of earnings is defensible for assessing current operations.
What is not defensible is ignoring what it means. A large goodwill impairment says the company overpaid for something, which is information about capital allocation and about the judgement of the people still running the business.
A pattern of repeated impairments across multiple acquisitions is one of the more reliable signals available about management discipline.
The Asymmetry
Under United States standards, impairments generally cannot be reversed. Under international standards, impairments of assets other than goodwill can be reversed if conditions improve, but goodwill impairment is permanent under both.
This creates a one way ratchet on goodwill. The asset can only ever decline in carrying value, which means the balance sheet gradually records the accumulated evidence of which acquisitions did not work.
The Bottom Line
Impairment writes assets down to what can be recovered, using cash flow forecasts and discount rates chosen by the management that made the original purchase. Charges are non cash and late, and their timing frequently tracks leadership changes rather than the underlying deterioration. Adjust them out when assessing operations, and count them when assessing whether this team should be trusted with the next acquisition.