The short version
A scam loss is not deductible just because the loss is real, painful, or reported to law enforcement. For an individual taxpayer, the key question is whether the loss fits one of the categories in IRC §165(c), especially the category for a transaction entered into for profit.
For scam victims, the practical IRS framework usually comes down to three questions: was there theft under applicable law, was there no reasonable prospect of recovery at year-end, and did the loss arise from a profit-seeking transaction rather than a personal transfer? If one of those answers is weak, the tax position may be weak even when the fraud itself is obvious.
What the law actually says
IRC §165(a) allows a deduction for a loss sustained during the tax year and not compensated by insurance or otherwise. For individuals, IRC §165(c) narrows that rule to three categories:
| Category | What it covers | Why it matters for scam losses |
|---|---|---|
| §165(c)(1) | Trade or business losses | Usually not the lane for a personal investor unless the facts involve a business activity. |
| §165(c)(2) | Transactions entered into for profit, though not connected with a trade or business | The main path for many investment scam, crypto scam, and income-producing-property theft claims. |
| §165(c)(3) | Certain casualty or theft losses of personal-use property | A poor fit for many personal scam losses because personal-use casualty and theft deductions are heavily limited. |
The IRS repeats the same core concept in its current public guidance. Publication 547 and the 2025 Instructions for Form 4684 say victims of certain financial scams may claim a theft loss deduction under section 165 if the loss resulted from theft under state law, the taxpayer has no reasonable prospect of recovering the stolen funds, and the loss arose from a transaction entered into for profit.
That last phrase matters. A taxpayer can be scammed while trying to invest, or can be scammed while trying to help a romantic partner, respond to a fake emergency, pay a fake fee, or move money for a personal reason. The tax result may turn on the motive for the transaction that produced the loss, not just on whether the taxpayer was deceived.
How it works in practice
Think of the analysis in four steps.
First, identify what was stolen. Was it cash moved to a fake trading platform? Securities in an investment account? Digital assets moved because the taxpayer believed they were buying or protecting an investment? Or was it money voluntarily sent for a personal reason, such as a fake medical emergency or ransom demand?
Second, identify the relevant transaction. In Chief Counsel Memorandum 202511015, the IRS analyzed five scam patterns. The memorandum is not a regulation or a court decision, but it is useful because it shows the IRS’s factual approach. In that memo, existing investment accounts, a fake crypto investment platform, and unauthorized theft from investment accounts supported §165(c)(2) treatment. Romance and kidnapping scams did not, because the taxpayers’ motive was personal rather than investment-related.
Third, test the recovery issue. Under Treas. Reg. §1.165-1(d), a loss is not sustained for tax purposes while there is a reasonable prospect of reimbursement. For theft losses, Treas. Reg. §1.165-8 ties the year of deduction to the year the taxpayer discovers the theft, subject to the recovery rules.
Fourth, calculate and report the loss carefully. The amount is not always the amount shown on a fake account screen. It may depend on adjusted basis, taxability of retirement-account distributions, sales or dispositions that occurred before the theft, reimbursements, later recoveries, and the correct section of Form 4684.
Example
Assume a taxpayer withdraws funds from a taxable brokerage account and a traditional IRA after being told that an existing investment account has been compromised. The taxpayer moves the funds to what appears to be a new investment account, but the account is controlled by the scammer. By December 31, the financial institution and law enforcement have told the taxpayer the funds cannot be recovered.
That fact pattern is closer to a profit-seeking transaction if the taxpayer’s motive was to safeguard and reinvest investment funds. It is still not automatic. The file should show the original investment account, the scam communications, the transfer path, law-enforcement reports, financial-institution recovery efforts, year-end recovery facts, and how the claimed amount was calculated.
Now change the facts. The taxpayer sends money to someone posing as a romantic partner who claims to need emergency medical help. The theft is real, but the transfer was not made to invest, reinvest, or protect income-producing property. That kind of fact pattern is much harder to place under §165(c)(2).
The numbers and decision points
| Item | Number or threshold | Source |
|---|---|---|
| Individual loss categories in IRC §165(c) | 3 | IRC §165(c) |
| IRS financial-scam conditions listed in current Pub. 547 and Form 4684 instructions | 3 | IRS Publication 547; 2025 Instructions for Form 4684 |
| Sample scam fact patterns analyzed in Chief Counsel Memorandum 202511015 | 5 | IRS CCM 202511015 |
| Form 4684 section generally used for income-producing property theft losses | Section B | 2025 Instructions for Form 4684; CCM 202511015 footnote 12 |
| Form 4684 section reserved for qualifying Ponzi-type investment scheme procedures | Section C | 2025 Instructions for Form 4684 |
What usually may qualify
A scam-related theft loss is more likely to fit §165(c)(2) when the file shows an investment or income-producing property connection before the money was stolen. Examples may include:
- Funds transferred to what the taxpayer reasonably believed was an investment account or trading platform.
- Theft from a taxable brokerage account, retirement account, or other investment account.
- Digital assets sent to a fake investment platform where the taxpayer’s motive was to earn taxable income or appreciation.
- Transfers made to protect, move, or reinvest existing investment funds, if the records support that motive.
The word “may” is doing work here. The taxpayer still needs theft under applicable law, no reasonable prospect of recovery for the claimed year, and a defensible amount.
What usually does not qualify
A loss is less likely to qualify under §165(c)(2) when the facts show a personal transfer rather than an investment transaction. Examples include:
- A romance scam where the taxpayer sends money for personal support, travel, medical costs, or emergencies.
- A family-emergency or kidnapping impersonation scam.
- A fake government, bank, or tech-support demand where the taxpayer sends money to stop a personal threat and not to invest or protect income-producing property.
- A reimbursement, insurance, bank-reversal, or litigation claim that still had a reasonable prospect of recovery at year-end.
- A Ponzi safe-harbor position when the taxpayer does not qualify for the Revenue Procedure 2009-20 procedures reflected in Form 4684 Section C.
Those losses may still matter financially, legally, and emotionally. The narrow point is tax classification.
What to document before filing or amending
Before claiming a scam loss, build the file as if an examiner will read it cold two years from now.
- The original account statements, wallet records, purchase records, basis records, and transaction history.
- The emails, texts, platform screenshots, phone logs, wallet addresses, wire confirmations, exchange records, and bank records showing how the money moved.
- The law-enforcement report, financial-institution report, exchange support tickets, and any state-law theft analysis.
- Recovery evidence as of year-end, including bank responses, exchange responses, insurance positions, litigation status, bankruptcy status, and collection efforts.
- A timeline that separates discovery of the theft from later recovery efforts.
- A calculation that ties the claimed amount to adjusted basis and reimbursements, not just to the amount the scammer displayed on a fake screen.
- A Form 4684 reporting plan, including whether Section B or Section C is the correct path.
Do not wait until the return is being examined to assemble this. The recovery and profit-motive facts are easier to document while records, messages, and institutional responses are still available.
Related reading
The sibling pages in this §165 series are still in owner-review planning status. To avoid live 404 links, this draft intentionally leaves them as plain-text references until each page is approved and published:
- What counts as a transaction entered into for profit under IRC §165(c)(2)?
- The reasonable prospect of recovery test explained.
- Crypto scam losses and IRC §165(c)(2).
- What documentation the IRS expects for theft and fraud losses.
If you have already filed the deduction and received an IRS notice, the response path is different. Start with the notice, the claimed year, the Form 4684 position, and the IRS deadline before deciding whether to defend, amend, concede, or appeal.
How Sheepdog Tax can help
Sheepdog Tax can review the facts before you file or amend and help you decide whether a §165(c)(2) position is worth taking. The review focuses on classification, timing, recovery facts, documentation, and reporting mechanics, not on promising a result.
Request a §165(c)(2) loss-eligibility review before you file or amend.
Sources
- 26 U.S.C. §165, Losses – statutory categories for individual loss deductions, theft-loss timing, and personal casualty-loss limitations.
- 26 CFR §1.165-1, Losses – loss sustained, closed transaction, identifiable event, reimbursement, and reasonable-prospect-of-recovery rules.
- 26 CFR §1.165-8, Theft losses – theft-loss timing, amount rules, and theft definition.
- IRS Publication 547 (2025), Casualties, Disasters, and Thefts – current IRS public guidance on financial scams, proof of loss, and theft-loss reporting.
- 2025 Instructions for Form 4684, Casualties and Thefts – reporting instructions for financial scams, income-producing property, Section B, and Ponzi-type Section C procedures.
- IRS Chief Counsel Memorandum 202511015 – March 2025 IRS analysis of five scam-loss fact patterns under §165(c)(2), reasonable prospect of recovery, Form 4684 reporting, and Ponzi safe-harbor limits.
- IRS Topic No. 515, Casualty, Disaster, and Theft Losses – current IRS topic page summarizing theft-loss deductibility and reporting on Form 4684.
Prepared by Noah Green, CPA, CFE.