The short version
A Ponzi scheme loss and a personal scam loss can feel similar because both involve deception, missing money, and a victim who acted in good faith. The tax treatment can be very different.
The special Ponzi safe harbor is not a general rescue rule for every fraud loss. It applies only when the taxpayer fits the IRS procedure for certain fraudulent investment arrangements. A personal scam, romance transfer, family-emergency transfer, or fake payment demand may still be theft under state law, but that does not automatically make it deductible under IRC 165(c)(2).
If you are deciding whether to file Form 4684, the first job is classification. Do not start with the safe harbor. Start with what was stolen, why the money was transferred, whether there was a profit motive, whether a recovery claim remains realistic, and whether the facts fit the IRS definition of a Ponzi-type investment scheme.
What IRC 165 actually says
26 U.S.C. 165 allows a deduction for losses sustained during the taxable year and not compensated by insurance or otherwise. For individuals, the statute narrows that broad rule. The loss generally must fit one of the individual categories in IRC 165(c), including losses from a trade or business, losses from a transaction entered into for profit, or certain casualty or theft losses.
That distinction is why two fraud victims can have different tax outcomes. A person who sends money into an apparent investment program is not in the same tax posture as a person who sends money because a scammer invented a personal emergency. Both victims may have been defrauded. Only one may have facts that support a profit-motive theft loss.
IRS Publication 547 and the Instructions for Form 4684 now tell financial scam victims to apply a three-part screen:
| Requirement | What it means in plain English | Why it matters |
|---|---|---|
| Theft under applicable state law | The facts must amount to criminal theft, not merely a bad investment or breach of contract. | IRC 165 theft loss treatment starts with theft classification. |
| No reasonable prospect of recovery | The taxpayer cannot have a realistic reimbursement path for the claimed amount in the year claimed. | A loss is not sustained while a meaningful recovery claim remains open. |
| Transaction entered into for profit | The money or property must be tied to an investment or profit-seeking transaction. | This is the key difference between many investment scams and personal scam transfers. |
The Ponzi safe harbor adds a separate layer. It can simplify timing and loss computation for qualifying fraudulent investment arrangements, but it does not replace the basic classification work.
What makes a Ponzi-type investment scheme different
The IRS Ponzi guidance points taxpayers to Revenue Ruling 2009-9 and Revenue Procedure 2009-20. The revenue procedure describes an optional safe harbor for qualified investors who experienced losses in certain investment arrangements discovered to be criminally fraudulent.
The safe harbor is narrow because it is built around a specific type of fraud. In the IRS definition, a specified fraudulent arrangement generally has a lead figure who receives cash or property from investors, claims to earn income for them, reports fictitious income amounts, pays some investors from money supplied by other investors, and appropriates investor property.
That is different from many personal scams. A romance scammer may trick a victim into sending money. A fake kidnapping scammer may create panic. A fake tax, tech-support, or family-emergency scammer may create urgency. Those facts may show theft, but they do not automatically show a qualifying fraudulent investment arrangement or a transaction entered into for profit.
The Ponzi safe harbor in numbers
Revenue Procedure 2009-20 matters because it gives qualifying taxpayers a simplified computation. The numbers are useful, but only after the taxpayer qualifies.
| Issue | Ponzi safe harbor treatment | Source |
|---|---|---|
| Qualified investment | Initial investment, plus later investments, plus certain income previously reported, minus withdrawals. | Revenue Procedure 2009-20, section 4.06 |
| Safe harbor percentage with no potential third-party recovery | 95 percent of qualified investment, reduced by actual recovery and potential insurance or SIPC recovery. | Revenue Procedure 2009-20, section 5.02 |
| Safe harbor percentage with potential third-party recovery | 75 percent of qualified investment, reduced by actual recovery and potential insurance or SIPC recovery. | Revenue Procedure 2009-20, section 5.02 |
| Filing route | A qualifying taxpayer using the procedure follows the Form 4684 route described in the procedure and current Form 4684 instructions. | Revenue Procedure 2009-20, section 6; Form 4684 instructions |
| Non-safe-harbor claims | A taxpayer who does not use the safe harbor must prove theft, discovery year, amount, documentation, and no reasonable prospect of recovery under generally applicable IRC 165 rules. | Revenue Procedure 2009-20, section 8 |
The table is not an eligibility checklist. It is a warning. A taxpayer should not jump to the 95 percent or 75 percent computation until the arrangement, investor, criminal action, recovery facts, and filing choice all fit the procedure.
What the 2025 IRS scam memo adds
Chief Counsel Advice 202511015 is useful because it separates investment-type scam losses from personal scam losses. The memo concludes that five taxpayers suffered theft losses under IRC 165, but it does not let all five deduct the losses.
The memo treats the losses of Taxpayers 1, 2, and 3 as deductible under IRC 165(c)(2) because those facts involved a transaction entered into for profit. Those examples included an investment-account transfer scam, a pig-butchering cryptocurrency investment scam, and phishing theft involving investment property.
The same memo treats the losses of Taxpayers 4 and 5 as nondeductible under IRC 165(c)(2) because the transfers were personal, not profit-motivated. Those examples involved a romance scam and a fake kidnapping or emergency-family scam. The harm was real, but the tax classification was different.
The memo also says none of the five taxpayers qualified for the Ponzi loss safe harbor. That point is important. Even a scam that feels investment-related is not automatically a Ponzi-type investment scheme. The safe harbor requires the specific fraudulent arrangement and lead-figure criminal-action conditions described in Revenue Procedure 2009-20.
How this works in practice
Assume a taxpayer put 120,000 dollars into an apparent investment fund. The fund issued account statements, reported investment returns, allowed one small withdrawal, and later collapsed after the lead promoter was charged with fraud. The taxpayer has records showing deposits, reported income, withdrawals, criminal filings, receiver notices, and no realistic current recovery except for a potential third-party claim.
That file may raise a real Ponzi safe harbor question. The review would still need to test whether the taxpayer is a qualified investor, whether the arrangement is a specified fraudulent arrangement, whether the discovery year is correct, whether the 75 percent or 95 percent percentage applies, and whether the Form 4684 election and required statements are handled correctly.
Now change the facts. A taxpayer sends 120,000 dollars to someone they met online because the person claims to need surgery, bail, travel money, or emergency help for a family member. The victim may have reports to law enforcement and bank records. But unless the transfer arose from a profit-motivated transaction or income-producing property, the Ponzi procedure is the wrong starting point.
The same dollar loss can therefore move through two different doors:
| Fact pattern | Main classification question | Safe harbor posture |
|---|---|---|
| Fraudulent investment arrangement with a lead figure, fictitious income, investor statements, criminal charges, and qualified investor facts. | Does the taxpayer fit Revenue Procedure 2009-20 and current Form 4684 instructions? | Possible, but still fact-dependent. |
| Fake trading platform or crypto investment pitch with profit motive but no qualifying Ponzi structure. | Does the loss satisfy IRC 165(c)(2), theft, basis, timing, and recovery rules? | Usually not the Ponzi safe harbor, even if investment-related. |
| Romance, family-emergency, fake kidnapping, or personal payment scam. | Was the transfer personal rather than profit-motivated? | Generally outside the Ponzi safe harbor and vulnerable under IRC 165(c)(2). |
What to document before choosing a filing position
Before filing or amending, build the file around classification rather than emotion. The IRS will not classify the loss based on how devastating it was. The return position needs proof.
For a possible Ponzi safe harbor claim, gather the investment agreement, account statements, deposit records, withdrawal records, Forms 1099 or other income reports, receiver or trustee notices, court filings, criminal complaint or indictment information, recovery estimates, insurance or SIPC claim records, and the Form 4684 computation.
For an ordinary financial scam claim, gather bank and brokerage records, wallet or exchange records, platform screenshots, messages, emails, police reports, FBI IC3 reports, bank recall requests, support tickets, recovery denial letters, basis records, prior returns, and any evidence showing why the transaction was entered into for profit.
For a personal scam, gather the same proof of theft and loss, but do not assume the file supports a deduction. The key tax question is whether the facts can cross from personal harm into a deductible IRC 165(c)(2) loss. CCA 202511015 is a cautionary source on that exact point.
Common mistakes
The first mistake is calling every large fraud a Ponzi loss. A Ponzi-type scheme has a specific tax meaning in the IRS procedure. A fake platform, personal transfer, phishing theft, or online relationship scam may not satisfy that meaning.
The second mistake is using the safe harbor percentage without the safe harbor conditions. The 95 percent and 75 percent figures are not general estimates for scam losses. They are part of an optional procedure for qualified investors with qualified losses.
The third mistake is ignoring recovery timing. Publication 547 warns that if there is a claim for reimbursement with a reasonable prospect of recovery, the loss is not sustained until the taxpayer can determine with reasonable certainty whether reimbursement will be received.
The fourth mistake is treating the theft-loss deduction as if it erases every other tax issue. If the stolen money came through an IRA distribution, brokerage sale, crypto disposition, or prior reported income, the deduction review has to address basis, income, gains, distributions, and reporting forms separately.
Related reading
This draft is part of the IRC 165 scam-loss series. The planned hub page on Ponzi vs ordinary scam loss rules, the planned article on what “entered into for profit” means, and the planned theft-loss documentation checklist should be linked only after each page is owner-approved and live.
If you already claimed a loss and received an IRS notice, the issue moves from classification planning into an IRS response path. That defense article is not linked here until it is live and owner-approved.
How Sheepdog Tax can help
Sheepdog Tax can review the loss file before you file or amend, separate Ponzi safe harbor facts from ordinary scam-loss facts, and identify the evidence needed for the filing position. The review focuses on classification, profit motive, timing, basis, recovery prospects, Form 4684 mechanics, and the records that would matter if the IRS later questioned the claim.
Schedule a classification review before choosing a filing position.
Sources (primary authority first)
- 26 U.S.C. 165, Losses.
- IRS Publication 547 (2025), Casualties, Disasters, and Thefts.
- IRS Instructions for Form 4684 (2025), Casualties and Thefts.
- IRS Chief Counsel Advice 202511015.
- IRS, Help for Victims of Ponzi Investment Schemes.
- IRS Revenue Procedure 2009-20.
- IRS Revenue Ruling 2009-9.
Prepared by Noah Green, CPA, CFE.