Lost cryptoassets to a scam, a hack or a collapsed platform? You are looking for two different things, and it is important to separate them: recovering the asset, and recovering the tax.
Crypto scam, fraud and theft losses — the tax position, properly explained
A crypto scam loss is not automatically a tax loss. This is the single most misunderstood point in UK crypto taxation, and getting it wrong costs victims twice. HMRC’s published position is considerably narrower than most online commentary suggests: theft of cryptoassets is not a disposal for Capital Gains Tax, because in HMRC’s view you still own the stolen asset and retain a right to recover it (HMRC Cryptoassets Manual, CRYPTO22450). The route to a deductible loss is therefore almost never “my coins were stolen” — it is a properly evidenced negligible value claim under section 24(2) of the Taxation of Chargeable Gains Act 1992.
TaxDigit are chartered certified accountants and international tax advisors in Guildford, Surrey, acting for clients across the UK and worldwide. We reconstruct what actually happened on-chain and on your exchange accounts, quantify the loss in sterling, and put a defensible claim in front of HMRC — or tell you honestly when there is no claim to make.
Which situation are you in? HMRC treats these three very differently
| What happened | HMRC’s position | Realistic tax outcome |
|---|---|---|
| You paid, but never received any tokens Fake exchange, fake broker, fake “investment platform”, romance or pig-butchering scam where nothing was ever bought | CRYPTO22450: individuals who contract to acquire tokens but do not receive them “may not be able to claim a capital loss” | The hardest case. No chargeable asset was ever acquired, so there may be nothing to dispose of and nothing to make a negligible value claim over. There is an arguable position that you acquired a contractual right (a chose in action) which is itself an asset capable of becoming of negligible value — but HMRC does not endorse it and it has not been tested in a crypto case. We will tell you where you stand rather than sell you a claim. |
| You received real tokens which later became worthless Rug pull, abandoned project, collapsed token that did genuinely trade | CRYPTO22450: you “may be able to make a negligible value claim… if those tokens become worthless” | The strongest case. A negligible value claim under TCGA 1992 s.24(2) treats you as having disposed of and immediately reacquired the tokens, crystallising an allowable capital loss you can set against other gains. |
| The tokens were already worthless when you acquired them | CRYPTO22450: “If the tokens are worthless when acquired then a negligible value claim won’t be allowed” | No negligible value claim. HMRC accepts that an actual disposal by other means can still crystallise the loss, so the route here is a genuine disposal rather than a claim. |
| Your wallet was hacked or drained, or your exchange account was taken over | CRYPTO22450: theft is not a disposal and “victims of theft cannot claim a loss for Capital Gains Tax” | No automatic loss. Where recovery is realistically impossible, a negligible value claim is the available route (CG13155). If the loss is covered by insurance, s.22(1) TCGA 1992 takes priority and the compensation is treated as a capital sum derived from the asset. |
| You have permanently lost your private keys or seed phrase | CRYPTO22400: misplacing a key “does not count as a disposal” — the key and the tokens still exist | Where the key is genuinely unrecoverable, HMRC accepts a negligible value claim may be made, treating you as having disposed of and reacquired the inaccessible tokens. |
| Your platform collapsed or entered insolvency FTX, Celsius, BlockFi, Genesis and similar | Fact-dependent. What matters is when your claim against the estate became of negligible value, and what you actually recover from the administration | Timing is everything. Claiming too early risks rejection; claiming too late can waste relief. Distributions received from an estate change the computation and frequently need the original claim revisited. |
The trap almost nobody tells victims about: the claim covers the whole pool
Cryptoassets of the same type are held in a single section 104 pool. HMRC is explicit that a negligible value claim must be made in respect of the whole section 104 pool, not the individual tokens you lost (CRYPTO22500). You cannot carve the scammed tranche out of a pool that also holds valuable coins of the same type. Getting this wrong is the most common reason a claim prepared without specialist help is rejected — and it is precisely why the pool has to be rebuilt correctly before anything is submitted to HMRC.
Equally, a claim that should have been made and was not is money left on the table. An allowable capital loss can be carried forward indefinitely against future gains, so a loss quantified today can shelter a disposal years from now — at 2026/27 rates of 18% within the basic rate band and 24% above it.
Nothing on this page is general guidance on UK tax law as at 9 August 2026 and is not advice for any particular person or situation. Tax treatment depends on your individual circumstances and may change. Where we quote HMRC’s internal manuals, note that those manuals are guidance prepared for HMRC staff, are not law, and do not bind HMRC in an individual case. TaxDigit is not an asset-recovery firm, an investigator or a law-enforcement body, and nothing here is a promise that lost cryptoassets can be recovered. Please take advice before acting. Reviewed by the TaxDigit crypto tax team · Last reviewed 9 August 2026.
What we actually do for scam and fraud victims
1. Forensic transaction reconstruction
We rebuild the complete transaction history across every wallet address, exchange account and chain involved — including the transfers out to the fraudster’s addresses — and reconcile it into a single sterling-denominated ledger with dates, values and counterparties.
2. Loss quantification
We compute the sterling cost of what you actually lost, correctly pooled under section 104, and separate genuine capital loss from money that was never invested, from fees, and from amounts already relieved elsewhere.
3. Negligible value claims
We prepare and submit the claim under TCGA 1992 s.24(2), specifying the asset, the deemed disposal value and the date, at pool level, with the supporting evidence HMRC expects to see.
4. HMRC evidence packs
A structured, referenced bundle: on-chain evidence, exchange statements, correspondence with the platform, your fraud report reference, and a written analysis explaining why the asset is of negligible value.
5. Exchange transaction analysis
Where an exchange account was compromised or a platform has failed, we analyse the account’s full transaction history to establish what was yours, what moved, when, and what your claim against the estate is worth.
6. Working alongside your recovery team
Where you instruct solicitors, blockchain-tracing specialists or civil-recovery counsel, we act as the accounting and quantum arm — supplying the financial analysis, loss schedules and figures they need, and keeping the tax position aligned with the legal one.
7. Correcting earlier tax returns
Scam losses rarely arrive alone. Where earlier disposals, staking income or DeFi activity were misreported, we correct the position through the appropriate HMRC disclosure route at the same time.
8. Honest triage, first
Some situations have no tax claim in them. We will say so at the outset rather than bill you to find out. That is what a regulated firm is for.
A warning we would rather give than not: recovery scams
There is an entire industry that targets crypto fraud victims a second time, offering guaranteed “fund recovery” for an upfront fee. Treat any of the following as a red flag: a guarantee that your funds can be recovered; a fee payable in cryptocurrency; an approach that came to you unsolicited after your original loss; a claim to be working with, or on behalf of, a government agency or the police; or a request for your seed phrase or private keys, which no legitimate professional will ever need.
TaxDigit does not recover assets and does not promise recovery. We are accountants. What we can do is establish, to an evidential standard, exactly what you held, what left your control, when, and what it was worth — and turn that into a tax position and a set of figures that stand up. Report the fraud itself to Report Fraud — the national reporting centre for fraud and cyber crime run by City of London Police, which replaced Action Fraud on 4 December 2025 — on 0300 123 2040. In Scotland, report to Police Scotland on 101. Reporting a fraud does not by itself create a tax loss — the two processes are entirely separate, and both matter.
What to send us to get started
- A full CSV or API export from every exchange account involved, for every year you have held cryptoassets — not just the year of the loss
- Every public wallet address you have controlled, including ones you no longer use
- Bank statements showing the fiat that went in and anything that came back out
- All correspondence with the platform, broker or individual involved
- Your fraud report or crime reference number, if you have one
- Any Self Assessment returns already filed that included cryptoasset entries
If you no longer have exchange records because the platform has disappeared, say so — on-chain reconstruction can often fill the gap, and HMRC accepts that a just and reasonable methodology may be necessary where complete records do not exist.
Frequently asked questions
I was scammed out of my crypto. Can I claim tax relief in the UK?
Sometimes, but not automatically, and it depends on which of three situations you are in. If you received real tokens that later became worthless, a negligible value claim under TCGA 1992 s.24(2) is usually available. If your wallet was hacked, HMRC does not treat theft as a disposal, so the route is again a negligible value claim where recovery is realistically impossible. If you paid a fraudster and never received any tokens at all, HMRC’s guidance says you may not be able to claim a capital loss, because no chargeable asset was ever acquired. That last case is genuinely unresolved and we will give you a candid view of it.
Does reporting the fraud to the police get me the tax relief?
No. They are separate processes. Reporting the fraud is the correct thing to do and produces a reference number that strengthens the evidence behind a claim, but it has no automatic tax consequence. HMRC has not published a standalone guidance page for victims of cryptoasset investment fraud — the position is set out only in the Cryptoassets Manual, at CRYPTO22450 for individuals and CRYPTO41550 for companies. A claim has to be made in the normal way and supported with evidence.
Can I just deduct what I lost from my income?
Almost never. A cryptoasset loss of this kind is a capital loss, not an income deduction. It is set against capital gains of the same tax year first, and any excess is carried forward against future gains. It cannot generally be set against employment income, and it does not produce a repayment on its own.
How long do I have to claim?
Do not leave it. Capital losses and negligible value claims are subject to statutory time limits, and a negligible value claim can in some circumstances be backdated — but only within tight limits and only if the asset met the conditions at the earlier date. If your loss happened several years ago, that is a reason to speak to us now rather than a reason not to.
I am not a UK resident. Can you still help?
Yes. We act for clients worldwide. Whether a UK loss claim is available to you depends on your residence position and where the gains you want to shelter arise. Where the tax at stake sits in another jurisdiction, we will say so and work with an adviser there rather than pretend the UK analysis answers it.
My company held the crypto, not me personally.
The analysis is parallel but not identical. HMRC applies the same position to companies at CRYPTO41550, with lost keys at CRYPTO41500 and negligible value claims at CRYPTO41450 — a company that is the victim of theft likewise cannot simply claim a loss. The interaction with the loan relationship and intangible fixed assets rules also has to be worked through, which is a materially more complex exercise.
Will HMRC investigate me because I raise this?
Making a correct claim is not a trigger for an enquiry. What does attract attention is an unevidenced claim, or a claim made on a return where the underlying cryptoasset history was never properly reported in the first place. Where there are earlier years to put right, the right sequence is to deal with those through the proper disclosure route at the same time — which is exactly the work we do.
This page is general guidance on UK tax law as at 9 August 2026 and is not advice for any particular person or situation. Tax treatment depends on your individual circumstances and may change. Where we quote HMRC’s internal manuals, note that those manuals are guidance prepared for HMRC staff, are not law, and do not bind HMRC in an individual case. TaxDigit is not an asset-recovery firm, an investigator or a law-enforcement body, and nothing here is a promise that lost cryptoassets can be recovered. Please take advice before acting. Reviewed by the TaxDigit crypto tax team · Last reviewed 9 August 2026. Updated August 2026.
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TaxDigit is a UK crypto accountant practice. We are chartered certified accountants, and we act for cryptocurrency investors who have lost tokens to scams, hacks and platform failures, in the UK and worldwide.
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