The reversal of an impairment loss under IFRS versus GAAP comes down to a single structural difference: IFRS requires companies to reverse a prior impairment on most long-lived assets once the conditions that caused the write-down have genuinely improved, while U.S. GAAP prohibits reversal for long-lived assets that are held and used, allowing it only in the narrow case of assets reclassified as held for sale. Which framework you report under determines whether the recovery ever reaches your income statement, how much of it you can recognize, and where in the financials it appears.
What IFRS Requires
Under IAS 36, if a company previously recognized an impairment loss on an asset other than goodwill, it must reverse that loss when the asset’s recoverable amount rises above its current carrying value. The reversal is mandatory, not elective. When the circumstances that triggered the original write-down have changed and recoverable amount now exceeds the impaired carrying amount, the reversal is recognized in profit or loss for that period.1IFRS Foundation. IAS 36 Impairment of Assets
The reversal is capped. You cannot write the asset back up to whatever its recoverable amount happens to be. The maximum carrying amount after reversal is the amount the asset would have been carried at, net of depreciation, had the impairment never been recognized. That requires tracking a hypothetical depreciation schedule from the original cost basis, as if the write-down never happened. If recoverable amount exceeds that ceiling, the reversal stops at the ceiling.1IFRS Foundation. IAS 36 Impairment of Assets
After the reversal, depreciation charges rise going forward because the asset is now being depreciated from a higher carrying amount over the remaining useful life. The reversal is not pure upside; the depreciation schedule has to be reset.
When IFRS Expects You to Reassess
IAS 36 does not leave the “when to check” question to management’s discretion. It lists specific indicators that require a reassessment of whether a previously recognized impairment loss may no longer exist or may have decreased. These mirror the original impairment indicators, but in reverse.
External indicators include observable evidence that the asset’s value has increased significantly during the period, significant positive shifts in the technological, market, economic, or legal environment the entity operates in, and a drop in market interest rates or other rates of return that would materially increase the asset’s value in use.2IFRS Foundation. IAS 36 Impairment of Assets
Internal indicators include significant changes in how the asset is used or expected to be used (including capital spent to enhance its performance or restructure the operation it belongs to), and internal reporting showing that the asset’s economic performance is or will be better than previously estimated.
Even if these indicators are present, a reversal occurs only when there has been an actual change in the estimates used to determine recoverable amount since the last impairment was recognized. Generalized optimism does not count. The entity has to document which specific assumptions changed and support those changes with verifiable evidence.2IFRS Foundation. IAS 36 Impairment of Assets
What GAAP Prohibits
U.S. GAAP goes the other way. Under ASC 360-10, once an impairment loss is recognized on a long-lived asset held and used, the reduced carrying amount becomes the asset’s new cost basis. Reversal of that write-down is prohibited. The lower amount is depreciated over the remaining useful life, and any later increase in value is not recognized until the asset is sold.
The reasoning reflects GAAP’s conservatism: an impairment loss is treated as a permanent acknowledgment that the asset’s carrying value could not be recovered. Permitting reversals would, in the FASB’s view, open the door to earnings management, because companies could time write-downs and later reversals to smooth income across periods.
The Held-for-Sale Exception
A narrow exception exists for assets reclassified from held and used to held for sale. Once an asset meets the held-for-sale criteria, it is measured at the lower of carrying amount or fair value less cost to sell. If that fair value later increases, a gain can be recognized, but only up to the cumulative impairment loss previously recorded. The asset cannot be written above its pre-impairment carrying amount.
This is the only circumstance under GAAP where something resembling an impairment reversal is permitted for long-lived tangible and finite-lived intangible assets. The window is typically short, running only from reclassification to actual disposal.
Calculating the Maximum Reversal Under IFRS
The math is straightforward if you have kept the records. Three steps.
First, determine the ceiling: the carrying amount the asset would have today if the impairment had never been recognized. Take original cost, subtract the depreciation that would have accumulated from acquisition through the current reporting date using the original useful life and method. An asset bought for $1,000,000 with a 10-year straight-line life, impaired at the end of year three, would have a ceiling of $700,000 at the end of year three, $600,000 at the end of year five, and so on.
Second, determine the new recoverable amount: the higher of fair value less costs of disposal and value in use. Fair value less costs of disposal is the price a market participant would pay minus the direct selling costs. Value in use is the present value of the future cash flows the asset is expected to generate.1IFRS Foundation. IAS 36 Impairment of Assets
Third, compare and cap. If the new recoverable amount exceeds the current impaired carrying value, you have a potential reversal. But the post-reversal carrying amount cannot exceed the ceiling. The reversal is the difference between the lower of the ceiling or recoverable amount and the current carrying value.
Take the same example. The asset bought for $1,000,000 was written down to $340,000 at the end of year three. By the end of year five, the ceiling (had no impairment occurred) is $500,000, and the new recoverable amount is $750,000. The reversal is capped at $500,000 minus $340,000, or $160,000. The $750,000 recoverable amount does not matter because the ceiling controls. You debit the asset account for $160,000 and credit an impairment reversal gain on the income statement for the same amount.
Where the Gain Lands
Cost Model vs Revaluation Model
Everything above assumes the asset is carried under the cost model. If it is carried under the revaluation model permitted by IAS 16 or IAS 38, the destination of the reversal gain changes.
Where the original impairment loss was recognized in profit or loss, the reversal first runs through profit or loss up to the amount of the original impairment charge. Any reversal beyond that is treated as a revaluation increase and recognized in other comprehensive income, credited to the revaluation surplus in equity.2IFRS Foundation. IAS 36 Impairment of Assets
The routing matters. A reversal that hits profit or loss directly boosts reported earnings. A reversal routed to other comprehensive income increases equity without flowing through the income statement. Companies on the revaluation model have to track the split between the portion of the original impairment that went through profit or loss and any portion that reduced a prior revaluation surplus.
Cash-Generating Units
Where the original impairment was recognized at the cash-generating unit level rather than for a single asset, the reversal is allocated back across the unit’s assets in proportion to their carrying amounts. Two constraints apply. No individual asset’s carrying amount can be raised above the lower of its own recoverable amount and the amount it would have had without any prior impairment. And no portion of a CGU-level reversal is ever allocated to goodwill.3IFRS Foundation. IAS 36 Impairment of Assets
If any asset within the unit hits its individual cap, the excess reversal that would have gone to it is redistributed proportionally among the remaining assets.
What Never Reverses Under Either Framework
Both GAAP and IFRS impose an absolute prohibition on reversing goodwill impairment losses. Once goodwill is written down, that charge is permanent.1IFRS Foundation. IAS 36 Impairment of Assets
The logic is identical under both standards. Any later recovery in the value of a reporting unit or cash-generating unit is assumed to reflect internally generated goodwill, which neither framework recognizes as an asset. Allowing a reversal would put self-created goodwill on the balance sheet through the back door, and both the FASB and the IASB have consistently rejected that. For acquisitive industries, this creates an asymmetry that lingers: a goodwill write-down after a bad acquisition is never recaptured through the impairment framework, even if the business recovers.
Indefinite-lived intangibles other than goodwill, such as trademarks, split along framework lines. Under IFRS, an impairment loss on an indefinite-lived intangible can be reversed, subject to the same historical cost ceiling that applies to any other non-goodwill asset. Under GAAP, the general prohibition applies: no reversal unless the asset is reclassified as held for sale.
Financial Instruments: The One Area Where Both Allow Reversal
Impairment of financial instruments operates under different standards than impairment of tangible assets, and both frameworks allow reversal here. This is the point of convergence.
Under IFRS 9, impairment of financial assets measured at amortized cost uses a forward-looking expected credit loss model with three stages. Stage 1 recognizes 12 months of expected credit losses. A significant increase in credit risk moves the asset to Stage 2, where lifetime expected credit losses are recognized. Stage 3 applies when the asset is credit-impaired. Assets can move backward through the stages: if credit risk improves, the asset reverts to a prior stage and the loss allowance decreases, with the reduction recognized in profit or loss as a reversal of expected credit losses.4IFRS Foundation. Curing of a Credit-impaired Financial Asset (IFRS 9 Financial Instruments)
Under ASC 326, the Current Expected Credit Losses (CECL) model similarly requires updating the allowance for credit losses at each reporting date. When improved conditions produce a lower loss estimate, the decrease is recognized through net income as a reversal of credit loss expense. The allowance is a valuation account deducted from amortized cost basis and moves in both directions.
The contrast with GAAP’s treatment of tangible assets is sharp. The difference reflects the nature of the instruments: financial assets have observable credit markets and measurable default probabilities, where long-lived asset valuations rely more heavily on management projections.
Disclosure, Depreciation, and Tax
Where the Gain Appears
Under IFRS, the reversal gain is recognized in profit or loss within income from continuing operations, unless the asset is carried under the revaluation model. It is typically shown either as a reduction of impairment expense or as a separate line in other income, so a reader can identify it without digging into the notes.
Depreciation Resets
The asset’s carrying amount increases by the reversal, which raises the depreciation base going forward. The higher carrying value is systematically depreciated over the remaining useful life. A reversal recognized in one period will reduce earnings in future periods through higher depreciation, partially offsetting the initial boost to income.
Note Disclosures Under IAS 36
IAS 36 requires extensive note disclosure when a reversal is recognized. The notes have to identify the specific asset or cash-generating unit, state the amount of the reversal, and explain the events and circumstances that led to the recovery. The entity also discloses the method used to determine the new recoverable amount (fair value less costs of disposal or value in use) along with the key assumptions.5IFRS Foundation. IAS 36 Impairment of Assets
For value-in-use measurements, the notes should describe changes in the discount rate, projected cash flows, or growth assumptions that drove the increase. For fair value measurements, the entity discloses the level of the fair value hierarchy used. These disclosures are the primary check against opportunistic reversals; they force management to articulate exactly what changed and subject those claims to audit scrutiny.
Tax Consequences
An impairment reversal creates a temporary difference between the asset’s carrying amount for accounting purposes and its tax base, which in most jurisdictions remains at the post-impairment amount because tax authorities often do not recognize the accounting reversal. The difference generates a deferred tax liability: book value now exceeds tax value, meaning higher taxable income in future periods as the entity depreciates the higher book amount while claiming lower tax depreciation.
The mechanics vary by jurisdiction because tax treatment of impairment losses differs. In some countries, the original impairment was never deductible, meaning a deferred tax asset was recognized at the time of impairment; when the reversal occurs, that deferred tax asset is unwound. In jurisdictions where the impairment was tax-deductible, the reversal triggers a new deferred tax liability. Either way, the net income impact of a reversal is smaller than the gross gain. Modeling only the pre-tax figure overstates the benefit to shareholders.