Impairment charges are formal write-downs that reduce a long-term asset’s recorded value on the balance sheet when its book value exceeds what the asset can realistically generate in future economic benefits. The charge is a non-cash expense: it lowers reported earnings in the period it’s recognized, but no money actually leaves the company. For investors, these write-downs often reveal that a past investment or acquisition didn’t work out the way management expected.
Which Assets Get Tested
Three broad categories of long-term assets fall under impairment rules, and each follows a different testing schedule.
- Tangible long-lived assets, meaning property, plant, and equipment: factories, machinery, buildings, vehicles. Tested only when a specific event or circumstance signals possible loss of value.
- Intangible assets with finite lives: patents, customer lists, software licenses, and similar assets that are amortized over a set useful life. Also tested only when a triggering event occurs.
- Goodwill and other indefinite-lived intangibles. Goodwill arises when a company acquires another business for more than the fair value of its identifiable net assets. Because it has no defined useful life, it isn’t amortized under standard U.S. GAAP for public companies. Instead, it must be tested for impairment at least once a year, whether or not anything seems wrong.1DART – Deloitte Accounting Research Tool. When to Test Goodwill for Impairment
Goodwill impairments tend to grab the most headlines because they’re often enormous. A multi-billion-dollar goodwill write-off is management publicly acknowledging that the premium it paid in an acquisition was too high, or that the expected synergies never materialized. These charges can wipe out a significant share of reported equity in a single quarter.
Private companies reporting under U.S. GAAP have the option to amortize goodwill on a straight-line basis over ten years, or a shorter period if a more appropriate useful life can be demonstrated, under FASB Accounting Standards Update 2014-02.2Financial Accounting Standards Board. ASU 2014-02 Intangibles – Goodwill and Other (Topic 350) Public companies and not-for-profit entities cannot use this alternative.
What Triggers a Test
For PP&E and finite-lived intangibles, testing isn’t on a fixed calendar. It happens whenever circumstances suggest the asset’s book value may no longer be recoverable. The accounting standards list several indicators:
- A significant decline in the asset’s or asset group’s market price.
- A change in how the asset is used, or physical damage to it.
- An adverse shift in the legal or business climate, such as new regulations, loss of a key customer, or an industry downturn that directly affects the asset’s value.
- Construction or acquisition costs that significantly exceed original expectations.
- A current-period operating loss combined with a history of losses, or forecasts showing continued losses tied to the asset.
- A current expectation that the asset will be sold or disposed of well before the end of its originally estimated useful life.
None of these indicators automatically means the asset is impaired. They’re signals that the company needs to run the numbers.
Goodwill and other indefinite-lived intangibles follow a different rhythm. They must be tested at least annually, on a date management selects, and again whenever a triggering event occurs between annual tests.1DART – Deloitte Accounting Research Tool. When to Test Goodwill for Impairment Different reporting units may use different annual testing dates, though most companies pick one date for consistency.
How the Charge Is Calculated for Long-Lived Assets
For PP&E and finite-lived intangibles, the calculation under ASC 360 runs in two steps, and the sequence matters because each step uses a different measurement.
Step 1: The Recoverability Test
The company adds up all the undiscounted future cash flows it expects the asset (or asset group) to generate through use and eventual disposal. If that total exceeds the carrying amount, the asset passes and no impairment is recorded. If the undiscounted cash flows fall short, the asset fails, and the company moves to Step 2.3Deloitte Accounting Research Tool. Measurement of an Impairment Loss
Using undiscounted cash flows here is deliberate. It sets a low bar: an asset only fails if it can’t even cover its book value before considering the time value of money. Plenty of economically marginal assets pass Step 1 and never reach the impairment calculation.
Step 2: Measuring the Loss
Once an asset fails the recoverability test, the impairment loss equals the difference between the asset’s carrying amount and its fair value. Fair value is determined using the best available evidence. If an active market exists for similar assets, the market price is used. When no market price is available, the company estimates fair value through a discounted cash flow model or an appraisal. Unlike Step 1, this step discounts future cash flows to present value using a rate that reflects the risks involved.3Deloitte Accounting Research Tool. Measurement of an Impairment Loss
The formula is straightforward: Impairment Loss = Carrying Amount − Fair Value. After the write-down, the reduced carrying amount becomes the asset’s new cost basis. If the asset is depreciable, future depreciation is recalculated over the remaining useful life using the new, lower basis. Under U.S. GAAP, the write-down is permanent. Even if fair value later recovers, the impairment loss cannot be reversed.
A Quick Example
A manufacturer carries specialized equipment on its books at $10 million. A major customer cancels a long-term contract, triggering an impairment review. The company projects the equipment will generate $8 million in undiscounted future cash flows. Because $8 million is less than the $10 million carrying amount, the asset fails the recoverability test. The company then estimates fair value at $6 million using a discounted cash flow model. The impairment loss is $4 million ($10 million minus $6 million), and the equipment’s new book value going forward is $6 million.
How Goodwill Impairment Is Calculated
Goodwill impairment works differently. There’s no undiscounted cash flow screen. Instead, goodwill is tested at the reporting unit level, typically an operating segment or one level below.
Before running the quantitative test, a company can perform a qualitative assessment, sometimes called Step 0. This involves evaluating macroeconomic conditions, industry trends, the reporting unit’s financial performance, and any relevant events. If the qualitative analysis shows it is not “more likely than not” (no greater than 50% likelihood) that the reporting unit’s fair value has dropped below its carrying amount, the company can skip the quantitative test entirely.1DART – Deloitte Accounting Research Tool. When to Test Goodwill for Impairment The qualitative option saves significant valuation costs in stable years.
When the qualitative assessment isn’t conclusive or the company chooses to go straight to numbers, it compares the fair value of the entire reporting unit to its carrying amount (including goodwill). If the carrying amount exceeds fair value, the company records an impairment loss equal to that difference, capped at the total goodwill allocated to that reporting unit.4DART – Deloitte Accounting Research Tool. Quantitative Assessment (Step 1) Goodwill can be written down to zero, but the charge won’t spill over and reduce other assets on the balance sheet.
Where the Charge Appears on the Financial Statements
An impairment charge hits the income statement as an expense within income from continuing operations. Under ASC 360-10-45-4, if the company presents an “income from operations” subtotal, the impairment loss must be included in it.5Deloitte Accounting Research Tool. Presentation of an Impairment Loss This is a point many investors miss. Impairment charges are not buried below the operating income line as non-operating expenses. They sit within operations, which means they directly reduce reported operating income and, by extension, net income and earnings per share.
Most analysts still adjust for impairment charges when evaluating recurring profitability, and companies often flag them as special items in earnings releases. But the official GAAP presentation treats them as part of operations.
On the balance sheet, the impaired asset’s carrying value is written down to its new fair value. Because the charge reduces net income, and net income flows into retained earnings, total shareholders’ equity drops by the after-tax amount of the impairment. For large goodwill write-offs, this can meaningfully change leverage ratios and book value per share, sometimes triggering debt covenant concerns.
Tax Treatment
A GAAP impairment charge does not automatically create a tax deduction. The IRS generally requires that a loss be “sustained” through an actual disposition or abandonment of the asset before it qualifies for a deduction.6Office of the Law Revision Counsel. 26 U.S. Code 165 – Losses
In practice, a company that writes down factory equipment for book purposes still can’t deduct that loss on its tax return until it sells, scraps, or permanently abandons the equipment. For goodwill, the disconnect can last even longer: tax-deductible goodwill (typically from asset acquisitions) continues to be amortized over 15 years for tax purposes regardless of any book impairment, and a tax loss generally isn’t recognized until the reporting unit itself is sold or closed.
This timing difference creates a deferred tax asset on the balance sheet. The company has recognized a book loss it hasn’t yet been able to deduct, so it records the future tax benefit it expects to receive when the loss is eventually realized for tax purposes. If there’s doubt the company will ever generate enough taxable income to use that benefit, a valuation allowance may reduce it further.
What Impairment Charges Signal
Analysts often strip out impairment charges when calculating adjusted earnings, and that’s reasonable for evaluating ongoing operating performance. But the charge itself carries real information. An impairment means value was destroyed at some point in the past, and the financial statements are now catching up.
A single impairment tied to a specific event, like the loss of a major contract or a natural disaster, is easier to look past. The more concerning pattern is repeated goodwill impairments, because they suggest management consistently overestimates the value of acquisitions or the synergies those deals will produce. When a company writes down goodwill from multiple acquisitions across different years, it’s reasonable to question whether the capital allocation process itself is broken.
The subjective inputs behind impairment testing also deserve scrutiny. Fair value estimates for reporting units involve projections of future cash flows, discount rate selections, and growth assumptions that management has significant discretion over. A company that barely passes its goodwill impairment test every year may be relying on optimistic assumptions to avoid a write-down. The footnote disclosures around impairment testing, particularly the margin by which fair value exceeds carrying amount, are some of the most useful forward-looking information in any annual report.
One boundary worth noting: everything above reflects U.S. GAAP. Companies reporting under IFRS follow IAS 36, which tests goodwill at a more granular level, uses different measurement concepts, and allows reversal of prior impairment losses on assets other than goodwill.7International Financial Reporting Standards Foundation. IAS 36 Impairment of Assets When comparing a U.S. company’s goodwill balance to a European peer’s, those structural differences change the picture.