Crypto Exchange Failure & Theft Loss Tax Treatment 2026

Why exchange losses are not a simple capital loss

If you sell Bitcoin for less than you paid, you have a capital loss: straightforward, on Schedule D. Exchange failures do not work that way. The asset did not change hands — it may be frozen in bankruptcy court, gone to a hacker, or locked in a fraud investigation. Without a sale or exchange, there is no triggering event in the capital gains sense.

The IRS has given guidance across three different code sections, and which one applies depends on the cause of the loss:

• IRC § 165(c)(2) — losses from profit-motivated transactions, including investment theft
• Rev. Proc. 2009-20 — optional safe harbor for losses from qualified fraudulent investment arrangements (Ponzi-type schemes)
• IRC § 165(g) — worthless securities deduction — does not apply to crypto, because crypto is property, not a security¹

Getting this wrong means either missing a valid deduction or triggering an IRS audit for an improper one.

The 2026 rule change: personal casualty losses are permanently gone

The Tax Cuts and Jobs Act (2017) suspended personal casualty and theft loss deductions for tax years 2018–2025, except for federally declared disasters. The One Big Beautiful Bill Act (OBBBA, July 2025) made this suspension permanent for tax years after December 31, 2025.²

The distinction that matters is profit motive. Assets held for investment at a centralized exchange can qualify under IRC § 165(c)(2). Personal crypto — from a self-custody wallet used personally — cannot.

Scenario 1: Exchange fraud — FTX, Celsius (the Ponzi safe harbor)

FTX collapsed in November 2022 after Sam Bankman-Fried was criminally charged with wire fraud, securities fraud, and related offenses. Celsius froze withdrawals in June 2022; founder Alex Mashinsky was indicted in July 2023 and convicted in December 2024. Both exchanges qualify for the safe harbor under Revenue Procedure 2009-20.³

Rev. Proc. 2009-20 allows investors to deduct a specified percentage of their qualified loss without having to individually prove each element of an investment theft under IRC § 165 — a much lower documentation burden. To use the safe harbor:

• The arrangement must be a "specified fraudulent arrangement" — a lead figure has been criminally charged with theft, fraud, embezzlement, or a similar offense
• Your "qualified investment" is the net amount you deposited — gross deposits minus any withdrawals already received back

The loss is reported on Form 4684 (Casualties and Thefts), Section B (business or income-producing property). It flows through as an ordinary loss — it is not a capital loss — and is not subject to the $3,000 annual capital loss cap. Large Ponzi-scheme losses can offset ordinary income without limit in the year claimed.

The loss is generally taken in the tax year when the fraud became apparent and there was no reasonable prospect of recovery — for FTX, that is 2022; for Celsius, also 2022 or 2023 depending on the facts of your specific situation. Consult a crypto-specialized CPA to determine the correct year and whether any filing window is still open for your case.

Scenario 2: Exchange bankruptcy without fraud — Voyager, BlockFi

Voyager Digital and BlockFi filed for bankruptcy in 2022, but their failures were attributed to insolvency and market conditions rather than criminal fraud in the Ponzi-scheme pattern that triggers Rev. Proc. 2009-20. Without a qualifying criminal charge against a lead figure, the safe harbor is not available.

For these situations, investors generally have two paths:

1. Wait for the bankruptcy conclusion. You are a creditor. The loss is not "closed and completed" until the bankruptcy plan distributes a final amount. Claim your net loss (original cost basis minus any distributions received) in the tax year when you can determine what, if anything, you will not recover.
2. Abandonment loss. If the bankruptcy estate has confirmed there is no recovery and your claim is effectively worthless, you may be able to claim a capital loss in the year of abandonment. The burden of proof is on you to establish the claim is worthless — a difficult but not impossible standard with proper documentation.

Distributions from bankruptcy estates are not automatically taxable income. Amounts that return your original cost basis are tax-free. Amounts above your original basis are capital gains. Track each distribution date, amount, and asset type meticulously.

Scenario 3: Exchange hack (exchange's systems breached)

If an exchange you held assets on was hacked at the platform level — not your personal account, but the exchange's infrastructure — your situation resembles exchange fraud. Your assets were held for investment, the theft was from a profit-motivated activity, and IRC § 165(c)(2) may allow a deduction.

Requirements to claim the investment theft loss:

• Assets were held for investment or business (not personal use)
• The theft was an "identifiable event" — a specific date when the loss became apparent
• There is no reasonable prospect of recovery, or you reduce the claimed loss by expected recoveries
• You can document what you owned, when, and at what cost

Unlike the Rev. Proc. 2009-20 safe harbor, there is no simplified percentage — you claim the full investment loss net of recoveries. Because there is no safe harbor, documentation requirements are stricter. File on Form 4684, Section B. If the exchange compensates customers from its own reserves (as some exchanges have done), reduce your loss by the reimbursement.

What happens when you receive recovery payments

FTX's bankruptcy estate settled its tax dispute with the IRS and has been distributing substantially to creditors — many at or near petition-date dollar values. If you previously claimed a theft loss and then receive a recovery distribution, the IRS requires you to include the recovery in income in the year received, to the extent the prior deduction gave you a tax benefit (IRC § 111, the tax benefit rule).⁴

For FTX creditors who received 2025 distributions: if you claimed a theft loss on your 2022 return, you likely have an income inclusion obligation on your 2025 return. If you did not claim a loss (perhaps because you were waiting), the recovery distribution is simply a return of your basis — largely or entirely non-taxable — but the analysis depends on your specific lot-by-lot cost basis. Either way, the multi-year interaction between the loss year and the recovery year creates planning opportunities that an advisor can help you model.

Record-keeping requirements

The IRS requires documentation that a theft or loss actually occurred. In the crypto context, gather:

• Exchange account statements showing your balance immediately before the failure
• Full transaction history CSV exports (deposits, withdrawals, trades, interest earned)
• A copy of the criminal indictment or bankruptcy filing to establish the qualifying event
• Exchange communications about frozen withdrawals or account restrictions
• Your cost basis records: date, price, and lot for each unit of crypto held at the exchange
• Records of any recovery distributions received, including date and asset type

Download everything accessible before exchanges go offline. Exchanges in bankruptcy sometimes maintain read-only access during a short wind-down window. If the exchange is already offline, court-appointed claims administrators (Kroll managed FTX's claims process) often provide official balance verification for tax documentation purposes.

Why this situation requires a specialist

Exchange failure tax losses sit at the intersection of tax law, bankruptcy law, and cryptocurrency-specific IRS guidance. The IRS Chief Counsel Advice 202302011 confirmed that losses from crypto exchange failures can be deductible under IRC § 165 — but it did not simplify the analysis for individual taxpayers.⁵

Three things a crypto-aware advisor brings that generic tax preparation cannot:

1. Safe harbor eligibility and year determination. Which exchange qualifies under Rev. Proc. 2009-20? What year should the loss be claimed? Does a 75% or 95% deduction apply given your recovery pursuit? These are judgment calls with significant dollar consequences.
2. Recovery income modeling across years. The loss deduction year and the recovery income year may hit different brackets, different life circumstances, and different state tax regimes. Proper sequencing matters — and sometimes it makes sense to disclaim a portion of the safe harbor deduction if the recovery is imminent and would be taxed at a higher rate.
3. Form 4684 mechanics. Casualty and theft loss reporting is one of the most error-prone areas of individual tax returns. Filing on the wrong form (Schedule D instead of Form 4684), or misclassifying a capital loss as an investment theft loss, changes the outcome and the audit risk significantly.

Get matched with a crypto-aware financial advisor

If you had funds at FTX, Celsius, Voyager, BlockFi, or another failed exchange — or received recovery distributions in 2025 or 2026 — the tax analysis likely spans multiple years and requires coordination between a CPA and a financial advisor who understands how the loss interacts with the rest of your plan. Tell us your situation and we will match you with a fee-only specialist.

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1. IRS, Notice 2014-21 — virtual currency treated as property for federal tax purposes; IRC § 165(g) worthless securities deduction does not apply because crypto is property, not a security listed in the statute.
2. IRS, Topic No. 515 — Casualty, Disaster, and Theft Losses — OBBBA (July 2025) permanently extended the TCJA suspension of personal casualty and theft loss deductions for losses not connected to a federally declared disaster; investment theft losses under IRC § 165(c)(2) remain deductible.
3. IRS, Revenue Procedure 2009-20 — optional safe-harbor method for deducting losses from qualified fraudulent investment arrangements; 95% deduction (no third-party recovery) or 75% (pursuing recovery); requires lead figure to be criminally charged with fraud, theft, embezzlement, or similar offense.
4. IRS, Topic No. 409 — Capital Gains and Losses — tax benefit rule under IRC § 111: recovery of a previously deducted loss is includible as ordinary income in the year of recovery, to the extent the prior deduction reduced tax.
5. Mayer Brown, The January Effect: IRS Rules on Cryptocurrency Loss Harvesting — analysis of IRS Chief Counsel Advice 202302011 and the application of IRC § 165 to losses from crypto exchange failures including FTX.

Tax treatment verified June 2026. Rev. Proc. 2009-20 safe harbor percentages per original IRS guidance. OBBBA (July 2025) personal casualty loss suspension made permanent for tax years after December 31, 2025. FTX and Celsius criminal charges per public court records. FTX IRS settlement amount per court filings cited in published reporting.