Crypto Tax Loss After a Scam: What You Can and Cannot Claim
A crypto scam loss is not automatically deductible, and the difference between a theft loss and a capital loss can be worth thousands. Here is how the treatment works, what records you need, and where to get jurisdiction-specific advice.
The Tax Treatment Is Not the Same as the Loss. And the Difference Is Real Money.
Why the category your loss falls into matters more than the amount.
What this guide says in 5 lines
- A scam loss is not automatically deductible. The category it falls into — theft loss, capital loss, or nothing — decides the treatment.
- Theft loss treatment has historically been more favourable than capital loss treatment, but the rules changed and the position is contested.
- Documentation is the whole game: without a police report and a written trace, a deduction is very hard to support.
- Worthless-security treatment is a separate route that some taxpayers use for failed tokens, and it has its own tests.
- This is general information. The rules differ by jurisdiction and change often — a tax professional is not optional here.
Most victims never consider the tax treatment of a scam loss, and the ones who do often assume it is deductible because it was a loss. Neither position is right. Whether a crypto scam loss reduces your tax bill depends on how it is categorised, and the categories have materially different consequences. Getting the category wrong can mean losing a deduction you were entitled to, or claiming one you cannot support.
This guide explains the categories in plain terms, what each one requires, the records that make a claim defensible, and the honest limits of general information on a subject that is jurisdiction-specific and frequently changing. It is not tax advice, and the last section explains why that distinction matters more here than anywhere else on this site.
The three categories, and why they differ
A crypto loss can be treated in more than one way, and the treatment determines how much of it you can actually use. The categories are not interchangeable, and the facts of your case determine which one applies.
| Category | When it applies | General treatment |
|---|---|---|
| Theft loss | Funds taken without your authorisation, or obtained by fraud | Historically deductible as a casualty and theft loss, subject to limits and to changes in the rules. |
| Capital loss | You disposed of the asset — including by sending it to a scammer | Offsets capital gains, with limited offset against ordinary income. |
| Worthless asset | A token you hold became worthless | Treated as a capital loss in the year it became worthless, with specific tests. |
| No deduction | Losses from certain activities, or where documentation is absent | No tax benefit, and the loss is simply gone. |
The rules in this area have changed and continue to be contested, and the treatment differs by jurisdiction. Nothing here is tax advice. Use it to ask a tax professional the right questions, not to file a return.
Why documentation decides the outcome
A tax authority does not accept that a loss occurred because you say so. A theft loss claim is supported by evidence that a theft occurred, and the two documents that carry the most weight are a police report and a written trace of the funds.
This is the same evidence set that supports every other route in this process, which is convenient: the work you did for the bank dispute and the IC3 complaint is the work that supports the tax position. If you have not filed those, do it now — the tax deadline is not the only reason.
- A police report with a report number, filed promptly after the loss.
- An IC3 or equivalent federal complaint, with the confirmation number.
- A written trace: transaction hashes, addresses, amounts, dates.
- Exchange or wallet records showing the funds leaving your control.
- The platform artefacts: the site, the chat, the deposit page, the “support” replies.
- A dated record of the fair market value at the time of the loss, with the source of that valuation.
Record the fair market value at the time of the loss, and note where you got it. That single number is what converts a loss into a deductible amount, and reconstructing it a year later is much harder.
Theft loss versus capital loss
The distinction matters because the two treatments are not equally useful. A capital loss offsets capital gains, and only a limited amount can be applied against ordinary income each year, with the remainder carried forward. A theft loss, where it applies, has historically been usable more broadly — which is why the categorisation argument is worth having.
The complication is that the rules governing theft loss treatment have changed, and the position is contested. Some practitioners argue that a scam loss is a theft loss; others argue that sending funds voluntarily makes it a capital loss. The answer depends on your jurisdiction, the facts, and the current state of the rules.
This is precisely the kind of question that requires a professional. The value of this section is that it tells you which question to ask, and what evidence the answer will depend on.
Do not file a theft loss claim on the basis of a general guide, including this one. The categorisation is contested, the rules have changed, and a wrong claim can cost more than the deduction was worth.
Loss harvesting, and why it is different
Loss harvesting is a separate technique and it is often confused with claiming a scam loss. It applies to assets you still hold: you sell them at a loss, realise that loss, and use it to offset gains elsewhere in the same tax year.
It does not apply to funds that were stolen, because there is nothing left to sell. It can apply to other positions in your portfolio, and it is a legitimate and commonly used strategy — but it is a portfolio decision, not a remedy for the scam.
- 01Identify positions you still hold that are at a loss.
- 02Confirm the loss is realisable in your jurisdiction and that no wash-sale or equivalent rule blocks it.
- 03Sell to realise the loss, and record the transaction and the cost basis.
- 04Offset the realised loss against gains in the same tax year, within the rules that apply to you.
- 05Keep the records: acquisition date, cost basis, sale date, proceeds, and the loss calculation.
Harvesting is the one part of this subject where you can act without waiting for a categorisation argument. It is a portfolio decision, and it is worth reviewing before the tax year closes.
What to bring to a tax professional
A tax professional can only work with what you give them, and the quality of the input determines the quality of the advice. Bring a complete package.
- The police report and the IC3 confirmation number.
- The written trace, with transaction hashes, addresses, amounts and dates.
- The fair market value at the time of loss, with the valuation source.
- Your cost basis for the assets lost, with acquisition records.
- Any recovery you have received, however small, and its date.
- The platform artefacts, in case the categorisation turns on how the funds were obtained.
- A written chronology, so the professional does not have to reconstruct it from documents.
Ask specifically: “Is this a theft loss or a capital loss in my jurisdiction, and what would change your answer?” That question gets you a useful answer, and it tells you what evidence to gather next.
The limits of this guide
Tax treatment of crypto losses is jurisdiction-specific, changes frequently, and depends on facts that vary from case to case. The rules that applied to a loss three years ago may not apply to one today, and the position in one country may be the opposite of another's.
What this guide can do is tell you that the categorisation matters, that documentation decides whether a claim is defensible, and which questions to ask. What it cannot do is tell you what to file. For that you need a tax professional who knows your jurisdiction and can see your documents.
The one action that is unambiguously worth taking regardless of jurisdiction is documentation. Every route in this process — the bank dispute, the police report, the exchange freeze request, the tax position — depends on the same evidence set, and it is much easier to assemble now than in a year.
This is general information, not tax, legal or financial advice. Consult a qualified tax professional in your jurisdiction before claiming any loss on a return.
Common questions
Assemble the evidence set first
Every tax position depends on documentation. The Report Builder produces a dated evidence pack, a complaint and a police statement from one form — free, in your browser.
Primary sources and further reading
- IRS — Digital Assets www.irs.gov
- FTC — What To Know About Cryptocurrency and Scams consumer.ftc.gov
- FBI IC3 — Internet Crime Report www.ic3.gov
- FINRA — Investor Alerts www.finra.org
External links open in a new tab and are provided so you can verify the underlying material yourself. TrueMoneyTalk is not affiliated with these organisations.
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Disclaimer: this guide is general information, not legal, financial or recovery advice, and it is not a substitute for advice from a licensed professional in your jurisdiction. Individual outcomes vary and are never guaranteed.