Few things sting more than watching your crypto vanish — drained by a hacker, sent to a scammer, or locked behind a private key you can no longer find. The natural follow-up question is whether the tax code offers any relief. The honest answer is: sometimes, but far less often than people hope, and the rules changed dramatically in 2018.
The 2018 Rule Change Matters
The Tax Cuts and Jobs Act suspended personal casualty and theft loss deductions for tax years 2018 through 2025, except for losses attributable to a federally declared disaster. This means most stolen crypto held for personal investment is notdeductible under the old theft-loss rules during this window.
How the IRS Treats Different Types of Loss
Not all crypto losses are the same in the eyes of the IRS. Before you can figure out whether a deduction is possible, you need to identify which category your situation falls into:
- Theft — your crypto was taken by someone through fraud, hacking, or a scam.
- Casualty — your crypto was lost through a sudden, unexpected event.
- Lost access — you forgot a password, lost a hardware wallet, or sent funds to the wrong address.
- Worthlessness / abandonment — a token collapsed to zero or a project shut down.
Each of these has a different tax answer, and lumping them together is one of the most common mistakes taxpayers make.
Stolen Crypto: The Theft Loss Problem
Before 2018, a theft of investment property could potentially be claimed as an itemized deduction. The Tax Cuts and Jobs Act changed that. For tax years 2018 through 2025, personal casualty and theft losses are deductible only if they result from a federally declared disaster — which a hack or scam almost never is.
There is a narrow, much-debated exception. If the theft occurred in a transaction you entered into for profit — for example, an investment scam where you were defrauded — some tax professionals argue the loss may still qualify as a deductible loss under a different section of the code that was not suspended. This area is genuinely murky, and the IRS has not issued comprehensive guidance specific to crypto. Anyone in this situation should work with a tax professional rather than self-filing.
An Example
Suppose you bought 2 ETH for $6,000 and a phishing site drained your wallet a year later when those coins were worth $8,000. You cannot deduct the $8,000 market value — at most you are dealing with your $6,000 cost basis, and even that is likely blocked by the 2018 suspension unless the profit-motive exception applies. You never "sold," so there is no capital loss either.
Lost Access: Usually Not Deductible
If you simply lost your private keys, forgot your wallet password, or threw away a hard drive, the IRS does not treat this as a realized loss. Crucially, you still technically own the asset — the coins exist on the blockchain, you just can't reach them. Without a sale, exchange, or other disposal event, there is no realization, and therefore nothing to deduct.
The same logic generally applies if you send funds to a wrong or unrecoverable address. The transaction confirmed on-chain, but you did not receive anything of value in return and you did not formally dispose of the asset for tax purposes.
Worthless and Abandoned Tokens
A token that has collapsed in value is a different scenario. If you still hold a token that is now worth essentially nothing, you generally have not realized a loss until you actually dispose of it. Two practical paths exist:
- Sell or swap it. If any liquidity remains, selling even for a few cents creates a clear, documented disposal and a realized capital loss equal to your basis minus proceeds.
- Abandonment. If a token is truly worthless and has no market at all, an abandonment may support a loss — but this requires affirmatively giving up all rights to the asset and is harder to substantiate.
The Practical Takeaway
For a token that has crashed but still has some market, the cleanest way to capture the loss is to sell it. A documented sale produces a capital loss you can use to offset capital gains and up to $3,000 of ordinary income per year, with the rest carried forward. This is far more reliable than trying to claim a theft or worthlessness deduction.
Documentation You Should Keep
Whatever your situation, strong records dramatically improve your position if the IRS asks questions. Hold on to:
- Original purchase records establishing your cost basis
- Transaction hashes and wallet addresses involved
- Exchange statements and any communications with the platform
- Police reports or filings with the FTC or IC3 for scams and thefts
- Screenshots showing the timeline and amounts involved
What This Means Going Forward
The suspension of personal theft and casualty losses is scheduled to expire after 2025, which could change the landscape for losses incurred in 2026 and beyond. Because the rules are in flux and the crypto-specific guidance is thin, the value of clean records and professional advice is higher here than almost anywhere else in crypto taxation.
Keep an Audit-Ready Record of Every Coin
BasisTracker preserves your cost basis and full transaction history, so if you ever face a loss, scam, or hack, you have the documentation needed to support your tax position.
Download BasisTrackerFree to start · Windows 10/11
Conclusion
Lost and stolen crypto is one of the most disappointing tax topics because the relief most people expect simply isn't there during the 2018 to 2025 window. Stolen and lost-access coins are usually not deductible, while a token that has crashed is best handled by selling it to lock in a clean capital loss.
If you were the victim of a profit-motivated scam, talk to a tax professional — that narrow category is where the genuine deduction opportunities, and the genuine complexity, live.
This article is for informational purposes only. Tax laws can change; consult a qualified tax professional for personalized advice.