The reversal of an impairment loss under IFRS versus GAAP comes down to a single, sharp divergence: IFRS requires you to reverse a previous impairment on most long-lived assets when the recoverable amount recovers, while U.S. GAAP prohibits reversal in almost every case. The framework you report under decides whether the gain ever reaches your books, how much of it you can recognize, and where in the financial statements it lands. Goodwill is the one place both standards agree, and financial instruments are the one place both allow adjustments in either direction.
What IFRS Requires
Under IAS 36, a company that previously recognized an impairment loss on an asset other than goodwill is required to reverse that loss when the asset’s recoverable amount rises above its impaired carrying value. The reversal is not discretionary. If the conditions that triggered the original write-down have changed and the numbers support recovery, the gain must be recognized in profit or loss for the 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 original impairment never been recognized. That means tracking a hypothetical depreciation schedule from the original cost basis. If the new 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 you are now depreciating a higher carrying amount over the asset’s remaining useful life. Companies sometimes overlook this. The reversal is not pure upside; it pulls future earnings down through higher depreciation.
A reversal happens only when there has been an actual change in the estimates used to determine the recoverable amount since the last impairment. General optimism does not count. The reporting entity has to document which specific assumptions changed and support those changes with verifiable evidence rather than internal forecasts alone.2IFRS Foundation. IAS 36 Impairment of Assets
What GAAP Prohibits
U.S. GAAP takes the opposite position. Under ASC 360-10, once you recognize an impairment loss on a long-lived asset held and used, the reduced carrying amount becomes the asset’s new cost basis. Reversal is flatly prohibited. That lower amount is depreciated over the remaining useful life, and any subsequent recovery in value is simply not recognized until the asset is sold.
The reasoning reflects GAAP’s conservative posture. An impairment charge is treated as a permanent acknowledgment that the asset’s carrying value could not be recovered. Allowing reversals would, in the FASB’s view, invite earnings management by letting companies time write-downs and later recoveries to smooth reported income.
The Held-for-Sale Exception
One narrow exception exists. When an asset is reclassified from held and used to held for sale, it is measured at the lower of its carrying amount or fair value less cost to sell. If that fair value later rises, a gain can be recognized, but only up to the cumulative impairment loss previously recorded. The asset still cannot be written above its pre-impairment carrying amount.
This is the only situation under GAAP where something resembling an impairment reversal is permitted for long-lived tangible and finite-lived intangible assets. In practice, the window is short, running from reclassification to actual disposal.
Goodwill: The Point Both Frameworks Agree
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 the same under both standards: any later recovery in the value of a reporting unit or cash-generating unit is treated as internally generated goodwill, and internally generated goodwill is not an asset either framework will recognize. Allowing a reversal would put self-created goodwill on the balance sheet through the back door, which both the FASB and the IASB have consistently rejected.
This creates an asymmetry that matters in acquisitive industries. A company that writes down goodwill after a poor acquisition and later sees that business recover will never recapture the charge through the impairment framework. The recovered value shows up only in higher future earnings or in an eventual sale of the business at a gain.
Indefinite-lived intangibles other than goodwill split by framework. Under IFRS, an impairment on an indefinite-lived intangible like a trademark can be reversed subject to the same historical-cost ceiling. Under GAAP, the general prohibition applies unless the asset is reclassified as held for sale.
Financial Instruments: Where Both Frameworks Allow Reversal
Financial assets are the one area where GAAP and IFRS converge on permitting adjustments in both directions.
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. If credit risk increases significantly, the asset moves to Stage 2 with lifetime expected losses. Stage 3 applies to credit-impaired assets, with lifetime losses recognized and interest calculated on the net rather than gross carrying amount. Assets can move backward through the stages: when credit risk improves, the loss allowance decreases and the reduction is recognized in profit or loss as a reversal of expected credit losses.3IFRS Foundation. Curing of a Credit-impaired Financial Asset (IFRS 9 Financial Instruments)
Under ASC 326, the Current Expected Credit Losses (CECL) model similarly requires entities to update their allowance for credit losses at each reporting date. When improved conditions produce a lower estimate of expected losses, the decrease flows through net income as a reversal of credit loss expense. The allowance is a valuation account that moves in both directions as management’s estimate changes.
The contrast with GAAP’s treatment of tangible assets is stark. The difference reflects the nature of the instruments: financial assets have observable credit markets and measurable default probabilities that support two-way adjustments in a way that long-lived asset valuations, which rely more heavily on management projections, arguably do not.
Calculating the Maximum Reversal Under IFRS
The math is straightforward, but it depends on records most companies do not keep unless they have planned for the possibility.
Step one: determine the ceiling. Take the asset’s original cost and subtract the depreciation that would have accumulated from acquisition through the current reporting date using the original useful life and method. For an asset purchased at $1,000,000 with a 10-year straight-line life impaired at the end of year three, the ceiling is $700,000 at that point, $600,000 at the end of year five, and so on.
Step two: determine the new recoverable amount, defined as the higher of fair value less costs of disposal and value in use. Fair value less costs of disposal is what a market participant would pay minus the direct costs of getting the asset to the buyer. 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
Step three: 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 from step one.
Take the earlier example. Suppose the asset was written down to $340,000 at the end of year three. By the end of year five, the ceiling 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 is irrelevant because the ceiling controls. You debit the asset for $160,000 and credit an impairment reversal gain for the same amount.
Where the Gain Appears
For assets carried under the cost model, the reversal gain flows through profit or loss within income from continuing operations. It is typically presented either as a reduction of impairment expense or as a separate line in other income.
For assets carried under the revaluation model permitted by IAS 16 or IAS 38, the routing changes. The reversal first goes through profit or loss up to the amount of the original impairment charge that was recognized there. Any reversal beyond that amount 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 distinction matters because it decides whether the gain lifts reported earnings or only equity. Companies using the revaluation model need to track the split between the portion of the original impairment that hit profit or loss and any portion that reduced a prior revaluation surplus.
Cash-Generating Unit Allocation
When the original impairment was recognized at the cash-generating unit level rather than for an individual asset, the reversal is allocated back across the unit’s assets in proportion to their carrying amounts, subject to two constraints:4IFRS Foundation. IAS 36 Impairment of Assets
- No individual asset’s carrying amount can be increased above the lower of its own recoverable amount and the carrying amount it would have had without any prior impairment.
- No portion of a CGU-level reversal is ever allocated to goodwill.
If any asset hits its individual cap, the excess is redistributed proportionally among the remaining assets.
Disclosure Under IAS 36
A reversal is not just a journal entry. IAS 36 requires the notes to identify the specific asset or cash-generating unit involved, state the amount of the reversal, and explain the events and circumstances that led to the recovery. The entity must also disclose the method used to determine the new recoverable amount, whether 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 higher recoverable amount. For fair value measurements, the entity discloses the level of the fair value hierarchy used. These disclosures act as the primary check against opportunistic reversals by forcing management to state exactly what changed and subjecting 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 follow the accounting reversal. That difference generates a deferred tax liability: the book value now exceeds the 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. In some countries the original impairment was never deductible for tax purposes, so a deferred tax asset was recognized when the impairment occurred; the reversal unwinds that asset. 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, because the tax effect partially offsets it. Finance teams that model only the pre-tax figure overstate the benefit to shareholders.