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The result depends on the tax year, your adjusted investment basis, what you have recovered or may recover, the legal character of the conduct, and whether you qualify for the optional Ponzi-scheme safe harbor. The discussion below reflects IRS materials for the 2025 tax year and cannot determine eligibility under facts that are not known.
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What the IRS means by an investment-fraud theft loss
Section 165 of the Internal Revenue Code can allow a theft-loss deduction in a transaction entered into for profit. An investment made to earn income or gain is generally the type of profit-seeking transaction at issue. The IRS states in Publication 547 (2025), “The loss must result from criminal conduct classified as theft under applicable state law.”
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Fraud, deception, embezzlement, or a Ponzi-type scheme may satisfy that standard if the conduct would be illegal under the relevant state or local law. A criminal conviction is not required, but you must be able to establish that the conduct meets the legal definition of theft. A civil dispute, failed investment, market decline, or business loss is not automatically theft merely because money was lost.
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The three questions that control eligibility
- Was the transaction entered into for profit? Personal-consumption losses generally do not qualify under the current individual rules. An investment intended to produce income or appreciation is different from property held for personal use.
- Does the conduct constitute theft under applicable law? The facts must support theft through fraud, misrepresentation, embezzlement, or similar unlawful conduct in the governing jurisdiction. The label used by a promoter, receiver, or lawsuit is not conclusive.
- Is there no reasonable prospect of recovery? You must account for insurance, Securities Investor Protection Corporation (SIPC) protection where applicable, receivership distributions, settlements, restitution, and other realistic sources of repayment. A pending claim or possible distribution can affect when and how much you may deduct.
IRS Topic No. 515 explains that individual taxpayers may be able to deduct theft losses incurred in a trade or business or in a transaction entered into for profit. The special personal-use theft-loss restriction therefore does not automatically bar a qualifying investment loss.
When can you claim the loss?
For the ordinary theft-loss route, the key timing issue is the year in which you can establish that there is no reasonable prospect of recovery. A scheme may have collapsed earlier, but a deduction is not necessarily available in that first year if insurance, a receiver, a court process, or another recovery source could still return money.
Determining the discovery year is fact-specific. Keep contemporaneous evidence showing when the fraud became known, what recovery avenues existed, and why those avenues were no longer reasonably expected to produce payment. If you claim a loss while a meaningful recovery remains possible, the deduction can be overstated and may need to be corrected.
Recovery amounts and claims
Actual reimbursements reduce the unrecovered loss. Potential recoveries also matter, even if you have not received the money yet. Insurance and SIPC coverage are specifically relevant under the IRS theft-loss guidance and the Ponzi safe harbor. A receiver’s plan, a restitution order, a bankruptcy distribution, or a lawsuit can create a recovery prospect that must be evaluated rather than ignored.
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The records should distinguish amounts actually received from amounts merely expected, disputed, or legally unavailable. Your basis, prior withdrawals or distributions, and any other amounts that reduced your economic investment also affect the computation. Those details are not supplied by the general rules and require a review of your account and scheme records.
Two federal routes: ordinary theft-loss rules or the Ponzi safe harbor
A potentially eligible investor generally has two practical approaches. The ordinary rules apply when the facts support a theft loss but the special safe-harbor requirements are not met or the taxpayer chooses not to use the safe harbor. Revenue Procedure 2009-20, as modified by Revenue Procedure 2011-58, offers an optional method for certain investors in specified criminally fraudulent investment arrangements.
| Issue | Ordinary theft-loss rules | Optional Ponzi safe harbor |
|---|---|---|
| Who can use it? | A taxpayer whose profit-seeking transaction produced conduct that qualifies as theft under applicable law and meets the recovery-prospect rules. | An eligible investor in a qualifying criminally fraudulent investment arrangement who satisfies the procedure’s definitions and elects the safe harbor. |
| Timing focus | The year the theft loss is established and there is no reasonable prospect of recovery. | The year and circumstances specified by the procedure and the current Form 4684 instructions for an eligible arrangement. |
| Calculation approach | Computed under the applicable theft-loss rules using the taxpayer’s supported loss and recoveries. | Qualified investment multiplied by 95% or 75%, then reduced by actual and potential insurance or SIPC recovery, subject to the procedure. |
| Recovery claims | Insurance, SIPC, receivership, restitution, and other recovery prospects can affect the amount and timing. | The percentage depends in part on whether potential third-party recovery is pursued or intended, and later recoveries can create later tax consequences. |
| Form treatment for 2025 individual returns | Use the applicable theft-loss lines in Form 4684 and follow the 2025 instructions for the transfer to the return. | Complete Section C of Form 4684 in lieu of Appendix A when eligible and electing the safe harbor, then transfer the resulting amount as instructed. |
How the Ponzi safe harbor works
The safe harbor is not a general election for every investment scam. It is limited to “qualified investors” in specified criminally fraudulent investment arrangements. Revenue Procedure 2009-20 sets out the arrangement and investor requirements; Revenue Procedure 2011-58 modified the procedure.
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Qualifying criminal proceedings
Among the procedure’s conditions, the lead figure generally must have been charged under state or federal law with fraud, embezzlement, or a similar crime that meets the theft definition, or be the subject of a qualifying criminal complaint together with the additional conditions in the procedure. A rumor, regulatory warning, civil complaint, or unexplained account shortfall is not enough by itself to establish safe-harbor eligibility.
The 95% and 75% percentages
Under the general safe-harbor calculation, the qualified investment is multiplied by:
- 95% when the investor does not pursue and does not intend to pursue potential third-party recovery.
- 75% when the investor is pursuing or intends to pursue potential third-party recovery.
Actual recovery and potential insurance or SIPC recovery are then subtracted as provided by the procedure. These percentages are calculation terms in Revenue Procedure 2009-20, not estimates of how much any particular victim will ultimately recover. Do not apply them to an ordinary investment loss, a market decline, or a scam that fails the procedure’s definitions.
Later money recovered
A later distribution, settlement, insurance payment, or other recovery does not simply disappear from the tax analysis. The safe harbor provides for later tax consequences when money is recovered, which can mean income or an additional deduction in a later year depending on the facts. Keep the safe-harbor computation, all recovery notices, and the tax returns on which the loss was claimed.
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The 2025 Instructions for Form 4684 provide the filing roadmap for an individual return.
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- Check whether the safe harbor applies. Confirm that the arrangement, criminal proceeding, investor status, and recovery facts satisfy Revenue Procedure 2009-20 as modified by Revenue Procedure 2011-58.
- If eligible and electing the safe harbor, complete Section C. The instructions state that Section C is used in lieu of Appendix A for a qualifying taxpayer who makes the election.
- If you are not using the safe harbor, use the applicable theft-loss lines. Follow the instructions for the ordinary theft-loss calculation and any required supporting statements.
- Transfer the amount to Schedule 1 as directed. The 2025 instructions direct an individual taxpayer to carry the applicable Form 4684 amount to Schedule 1 of Form 1040, following the line references in that year’s instructions.
Do not choose a section based only on the fact that a promoter called the arrangement a Ponzi scheme. The form choice follows eligibility and the election, not the marketing description.
Records to assemble before claiming anything
A tax preparer or attorney will need evidence both of the investment and of the theft. Organize the following:
- Account statements, wire confirmations, checks, subscription agreements, and other records showing each contribution.
- Documents showing withdrawals, distributions, redemptions, or other amounts returned to you.
- Communications, court filings, receiver notices, law-enforcement announcements, or other evidence describing the alleged conduct.
- The state or local law that makes the conduct theft, together with facts linking that law to the scheme.
- Insurance policies, SIPC correspondence, restitution information, settlement offers, bankruptcy filings, and receiver or trustee reports.
- A timeline showing when the fraud was discovered and when each possible recovery became unlikely, unavailable, or actually paid.
- Any prior tax returns on which related income, basis, or losses were reported.
The unresolved items in many cases include the tax year, jurisdiction, criminal charge or complaint, adjusted basis, prior withdrawals, and the status of insurance or other recovery. Without those facts, no one can reliably determine eligibility, the discovery year, or the deductible amount.
Common mistakes that can disallow or delay the deduction
Treating every failed investment as theft
A market loss, business failure, bad advice, or contractual breach may be economically painful but does not automatically satisfy the theft definition. The conduct must be criminal theft under the applicable law.
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Claiming the loss while recovery remains realistic
Filing before a receiver, insurer, SIPC, or court process has been evaluated can produce an incorrect discovery year or amount. Document why a recovery was no longer reasonably expected rather than assuming that a claim is worthless.
Using 95% or 75% outside the safe harbor
The percentages belong to the limited procedure. They are not a shortcut for calculating any investment-fraud loss and should not be used when the arrangement or investor does not meet the procedure’s requirements.
Ignoring later recoveries
Money received after a deduction can change the tax result in the year of recovery. Retain every payment statement and compare it with the original loss computation.
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IRS Advice Memorandum 202511015 discusses financial-scam theft losses and notes that, for tax years 2018 through 2025, individual theft losses are generally deductible under section 165 only when incurred in a transaction entered into for profit. The memorandum is explanatory IRS advice, not binding precedent. It should not be treated as a substitute for the statute, regulations, applicable law, or the instructions for the return being filed.
Federal rules do not answer every state-return question
The theft definition can depend on state or local law, and state income-tax treatment may differ from the federal result. A state may use different conformity rules, forms, limitations, or timing rules. Before filing a state return, verify that state’s current instructions rather than assuming the federal deduction carries over automatically.
When professional advice is warranted
Individualized advice is especially important when the scheme spans several tax years, a receiver is still distributing assets, insurance or SIPC coverage is disputed, you received prior withdrawals, or the alleged theft occurred across jurisdictions. A qualified tax professional can reconcile your basis and recovery records, evaluate the governing theft law, select the correct Form 4684 route, and account for later recoveries. Keep the final workpapers with your return because the safe harbor and ordinary rules both depend on facts that may be difficult to reconstruct years later.
Practical answer
You may be able to deduct money lost in an investment-fraud scheme on a U.S. federal return, but only after establishing a profit-seeking transaction, theft under applicable law, and no reasonable prospect of recovery for the amount claimed. If the arrangement meets the narrow requirements of Revenue Procedure 2009-20, the optional safe harbor can simplify the calculation; otherwise, the ordinary theft-loss rules and the applicable 2025 Form 4684 instructions control.
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