Are Impairment Losses Tax Deductible? GAAP, IRS, and Abandonment

Impairment losses recorded under GAAP are not tax deductible. The IRS won’t recognize a decline in an asset’s value as a deductible loss until a “closed and completed transaction” happens, such as a sale, exchange, abandonment, or a finding that the asset is completely worthless.¹ A company can write an asset down on its financial statements and still owe tax as if nothing changed. Getting the deduction means triggering the right event and measuring the loss the way the tax code measures it, not the way the accountants did.

Why a GAAP Write-Down Doesn’t Move the Tax Needle

Federal tax law allows a deduction for “any loss sustained during the taxable year and not compensated for by insurance or otherwise.”¹ The word doing the work is “sustained.” The loss has to be fixed and final, not an estimate. An impairment charge reflects a judgment that value has dropped, but the asset is still yours, and no arm’s-length transaction has confirmed the drop. A machine written down from $50,000 to $20,000 for obsolescence might still sell for $25,000 next year. Tax law waits.

The deduction, when it comes, is measured off adjusted basis, not book value. Adjusted basis starts with the purchase price, goes up for improvements, and comes down for depreciation already claimed and insurance reimbursements received.² The loss is the gap between adjusted basis and whatever you actually receive on disposition. That structure prevents double-counting: you don’t deduct depreciation over the years and then deduct the same dollars again through an impairment.

Events That Turn a Paper Loss Into a Deduction

Three kinds of events convert an impairment into something you can put on a return:

Sale or exchange. Selling to an unrelated third party is the cleanest trigger. The loss equals your adjusted basis minus the sale price.
Abandonment. Permanently giving up possession and use of business or investment property, with the intent to end ownership but without transferring it to anyone else, produces a deductible ordinary loss.³
Worthlessness. When a security or other asset loses all value, the code treats it as sold for zero on the last day of the tax year.¹

Reducing an asset’s book value, noting a market softening in a board memo, or recording an impairment charge does not qualify on its own. The IRS wants an objective event that puts the loss beyond recovery.

Abandonment When Nobody Will Buy

Abandonment is often the most practical path for impaired business assets that have no market. You don’t need a buyer. You need to stop using the property permanently and show that you’ve given up ownership. The IRS looks for an overt act, not just an internal note. Physically removing equipment from service, notifying relevant parties, or scrapping the asset all help establish intent.³

Abandonment of business or investment property that isn’t treated as a sale or exchange is generally an ordinary loss. Ordinary losses beat capital losses because they offset income dollar-for-dollar without the annual caps that apply to capital losses. Two wrinkles. If the abandoned property secures a debt, special rules can recharacterize the transaction as a sale or exchange. For depreciable property under MACRS, you can elect a partial disposition if only a component of a larger asset is being abandoned, deducting the adjusted basis of just the disposed portion.³

For nondepreciable property, an obsolescence deduction requires a sudden termination of usefulness, followed by the property being permanently discarded or the business itself being discontinued.⁴ Gradual decline alone won’t do it. And the loss belongs in the year it is actually sustained, which is not always the same year as the physical abandonment.

Personal-Use Property Is Mostly Out

The rules above assume the asset is used in a trade or business, or held for investment. Personal-use property almost never generates a deductible loss. A homeowner whose house drops in value cannot deduct the decline. Someone who sells a personal car at a loss cannot deduct that either.

The narrow exception runs through casualty and theft losses. A casualty is damage from a sudden, unexpected, or unusual event like a fire, tornado, or earthquake.⁵ Progressive deterioration like termite damage or a slow leak doesn’t count. Even qualifying personal casualty losses are deductible only if attributable to a federally declared disaster or a state declared disaster.¹ A house fire outside a declared disaster area generates no deduction. One carveout: if you have personal casualty gains in the same year, personal casualty losses can offset those gains even without a disaster declaration.⁶

Asset Type Changes the Answer

Section 197 Intangibles

Goodwill, trademarks, customer lists, covenants not to compete, and similar intangibles acquired in a business purchase are amortized over a fixed 15-year period. No other amortization or depreciation is allowed.⁷ Even after a GAAP goodwill impairment, the 15-year amortization schedule keeps running for tax purposes.

The harder trap: when you dispose of one Section 197 intangible but keep others acquired in the same transaction, you cannot recognize a loss on the disposed asset. The unrecognized loss gets added to the basis of the intangibles you still hold.⁷ You only get the full loss once the last intangible from that acquisition bundle is gone. A company that bought a business and acquired goodwill, a customer list, and a trademark together cannot write off the customer list as worthless while continuing to amortize the goodwill.

Inventory

Inventory is the rare place where a decline in value can affect taxable income before a final sale. Under lower-of-cost-or-market, a business compares each item’s market value on the inventory date to its cost and uses the lower figure.⁸ If goods become unsalable at normal prices, the write-down flows through cost of goods sold and reduces taxable income in the current year. This is the closest tax law comes to an impairment deduction, and it works only for inventory.

Worthless Securities

Stocks, bonds, and similar securities that lose all their value are treated as sold for zero on the last day of the tax year in which they became worthless.¹ That creates a realization event without a buyer. The resulting loss is a capital loss. Pinning down the exact year of worthlessness can be difficult, which is why the record-retention window for worthless securities claims extends to seven years instead of the usual three.⁹

Section 1244 Small Business Stock

Losses on qualifying small business stock get treatment most investors miss. If you bought stock directly from a small corporation that meets Section 1244, your loss is ordinary rather than capital, up to $50,000 per year ($100,000 on a joint return).¹⁰ Amounts above those limits revert to capital treatment. Ordinary classification matters because it offsets all types of income without the $3,000 annual cap.

Digital Assets

Cryptocurrency, tokens, and NFTs held as investments follow the same realization requirement. A decline in value alone is not deductible. You need a sale, exchange, or complete worthlessness. Assets frozen on an exchange or caught in bankruptcy proceedings aren’t a completed transaction until the bankruptcy resolves or the account is unfrozen. A bankruptcy settlement received in exchange for your digital assets is treated as a sale, with the gain or loss calculated in the year you receive it. Confirmed complete loss can qualify as worthless, but the standard is “completely worthless, not nearly worthless.” Stolen digital assets go on Form 4684 for the year you discovered the theft.¹¹

Ordinary vs. Capital, and Why It Matters

Once you’ve triggered a realized loss, its classification determines how fast the tax benefit arrives. Capital losses first offset capital gains dollar-for-dollar. Any remaining loss can offset only $3,000 of ordinary income per year for individuals ($1,500 if married filing separately).¹² Unused capital losses carry forward indefinitely, but at $3,000 per year a large loss can take decades to fully absorb.

An ordinary loss from abandoning business equipment offsets income in full. A capital loss from selling stock at a big loss trickles out slowly. Choosing the realization event, and knowing which classification your asset falls into, can change how quickly you recover the tax benefit.

Business owners get a break through Section 1231. Losses from selling or exchanging depreciable business property and real property used in a trade or business are netted each year against 1231 gains. A net loss makes the entire pile ordinary. A net gain makes it long-term capital.¹³ Losses get the higher-value ordinary treatment; gains get the lower capital rate.

Two Traps That Kill a Valid Loss

Selling an impaired asset to a family member or a company you control produces no deduction. Federal law disallows loss deductions on sales between related parties, including spouses, siblings, parents, children, and grandchildren, and between an individual and a corporation in which the individual owns more than 50% of the stock.¹⁴ The rule reaches sales between controlled group corporations, between trusts and their grantors or beneficiaries, and between partnerships and corporations with overlapping ownership above 50%. Constructive ownership rules mean a sale you think is to an unrelated party can still be disallowed if indirect ownership crosses the threshold.

The wash sale rule blocks a related move on securities. If you sell stock or securities at a loss and acquire substantially identical stock or securities within 30 days before or after the sale, the loss is disallowed.¹⁵ The 61-day window covers purchases, exchanges, and contracts or options to acquire the same security. The disallowed amount isn’t permanently lost; it gets added to the basis of the replacement shares. But if you want the loss in a particular tax year, you need a clean 30-day gap on both sides.

When Losses Exceed Income

Realized losses large enough to push total deductions above income for the year create a net operating loss. NOLs from tax years after 2017 carry forward indefinitely, but can offset only up to 80% of taxable income in any carryforward year.¹⁶ The remaining 20% stays taxable no matter how large your accumulated NOLs. There is no carryback for most NOLs generated after 2017, so current losses cannot be applied to prior years’ returns for an immediate refund.

Documenting and Reporting

The IRS wants evidence that the loss is real, correctly measured, and tied to a qualifying event. Establish adjusted basis by starting with the purchase price, adding capital improvements, and subtracting depreciation and insurance reimbursements.¹⁷ Document the realization event with a bill of sale, proof of abandonment, a bankruptcy settlement statement, or evidence of complete worthlessness. Professional appraisals help when value at the time of loss is likely to be contested. For abandonment, contemporaneous records showing when you stopped using the property and what you did to relinquish it matter most.

Business property losses go on Form 4797.¹⁸ Investment transactions, including stock and securities, are detailed on Form 8949 and totaled on Schedule D.¹⁹ Theft losses use Form 4684. Keep the supporting records for at least three years from the filing date, and seven years if the claim involves worthless securities or bad debt.⁹

1
Office of the Law Revision Counsel. 26 USC 165 – Losses
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Internal Revenue Service. Topic No. 703, Basis of Assets
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Internal Revenue Service. Publication 544 – Sales and Other Dispositions of Assets
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eCFR. 26 CFR 1.165-2 – Obsolescence of Nondepreciable Property
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Internal Revenue Service. Publication 547 – Casualties, Disasters, and Thefts
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Internal Revenue Service. Topic No. 515, Casualty, Disaster, and Theft Losses
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Office of the Law Revision Counsel. 26 USC 197 – Amortization of Goodwill and Certain Other Intangibles
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Internal Revenue Service. Lower of Cost or Market
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Internal Revenue Service. How Long Should I Keep Records
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Office of the Law Revision Counsel. 26 USC 1244 – Losses on Small Business Stock
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Taxpayer Advocate Service. When Can You Deduct Digital Asset Investment Losses
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Office of the Law Revision Counsel. 26 USC 1211 – Limitation on Capital Losses
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Office of the Law Revision Counsel. 26 USC 1231 – Property Used in the Trade or Business and Involuntary Conversions
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Office of the Law Revision Counsel. 26 USC 267 – Losses, Expenses, and Interest With Respect to Transactions Between Related Persons
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Office of the Law Revision Counsel. 26 USC 1091 – Loss From Wash Sales of Stock or Securities
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Office of the Law Revision Counsel. 26 USC 172 – Net Operating Loss Deduction
17
Internal Revenue Service. Publication 551 – Basis of Assets
18
Internal Revenue Service. About Form 4797, Sales of Business Property
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Internal Revenue Service. Instructions for Form 4797