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How the theft loss rules work
Personal casualty and theft losses are largely not deductible, but a theft loss from a transaction entered into for profit is deductible under section 165(c)(2). Revenue Ruling 2009-9 explains that a Ponzi scheme loss is an ordinary theft loss, not a capital loss, deductible in the year the theft is discovered, reduced by any reasonable prospect of recovery, and it can include fictitious income you reported in earlier years. Revenue Procedure 2009-20 provides a safe harbor letting qualified investors deduct 95% of the net investment, or 75% if pursuing third-party recovery, in the discovery year.
In 2025 the IRS Chief Counsel concluded in CCA 202511015 that victims of several common scams, including crypto investment and pig-butchering schemes in which the victim transferred funds hoping to profit, may claim theft losses, while scams without a profit motive generally do not qualify. Large losses can create a net operating loss carried forward. Later recoveries are income when received, and clawback payments to a receiver may qualify for relief under the claim-of-right rules in section 1341.
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