Some 240 people each declared more than 1 million pounds in cryptoasset gains in a single UK tax year — and together they booked 717 million pounds, more than half of all taxable crypto gains in Britain, according to the first official figures ever published by HMRC.
By Raj Patel | August 28, 2026
The Hook: Britain’s Crypto Gains Are Concentrated in Very Few Hands
HM Revenue and Customs (HMRC) said Thursday that 17,600 individuals reported cryptoasset disposals in the 2024-25 tax year. Across all of them, taxable capital gains came to 1.38 billion pounds on 13.8 billion pounds of disposal proceeds. But the distribution is strikingly top-heavy: the 240 millionaires represent fewer than 2% of crypto taxpayers, yet accounted for over half of both total gains and total proceeds, per HMRC’s statistical commentary.
At the other end of the scale, 65% of crypto taxpayers reported gains under 25,000 pounds. Between them, that majority accounted for just 7% of gains and 8% of proceeds. In plain terms: a small group of large traders did the heavy lifting, while most filers cashed out relatively small amounts.
By the Numbers: Who Actually Pays Crypto Tax
The figures appear for the first time because the UK Self Assessment return now carries a dedicated section for cryptoasset disposals — previously, crypto was lumped in with other property and assets. The new data paints a portrait of Britain’s crypto taxpayer that looks nothing like the wider capital gains population:
- 54% are aged 25 to 44 — versus 17% of capital gains taxpayers generally.
- 81% are 54 or under — crypto taxing is a young person’s game.
- 87% are men (versus 56% across all capital gains), and they booked 93% of the gains.
- The 25-44 cohort generated 71% of all disposal proceeds but only 45% of the gains — they trade hardest and earn least from it.
For context, total capital gains across all assets hit a record 127 billion pounds in 2024-25, generating 24.2 billion pounds in tax. HMRC cannot say how much of that came from crypto, because cryptoasset liabilities are not separated from other assets taxed at the main rates.
The Core Conflict: Voluntary Reporting Meets Automatic Surveillance
Today’s numbers rely on people self-reporting. That is about to change. Under the OECD’s Cryptoasset Reporting Framework, which the UK began implementing in January, crypto exchanges and other service providers must hand customer information directly to tax authorities. HMRC starts receiving that data in 2027, and providers that fail to comply face penalties of up to 300 pounds per user.
The shift is significant for anyone who has been casual about reporting. Exchanges already collect identity documents under anti-money-laundering rules; from 2027, they will effectively file the tax authority’s paperwork for their customers. HMRC says its targeted crypto work — including clear guidance and social media outreach — has already helped taxpayers understand their obligations, resulting in an additional 168 million pounds of Capital Gains Tax.
Market Implications: What This Means for Your Wallet
There are two practical takeaways for regular investors. First, the rules are softening in one area: the Treasury plans to defer capital gains tax on DeFi lending and liquidity pool deposits until assets are genuinely disposed of — meaning moving crypto through a lending protocol will not automatically trigger a taxable event. Second, the deadlines are hard: gains above the 2025-26 allowance must be reported by 31 January 2027.
“Taxes are due on cryptoasset gains just like any other gains,” said James Murray, Financial Secretary to the Treasury, in a statement accompanying the release. The message is unambiguous: crypto profits are taxed the same as profits from selling a rental property or shares, and the era of plausible ignorance is ending as automatic exchange reporting approaches.
The Verdict: Compliance Is the Price of Legitimacy
The concentration HMRC uncovered — 240 people booking over half a nation’s crypto gains — is a snapshot of a maturing market where big winners dominate. But the bigger story is structural: Britain is building the plumbing for automatic crypto tax surveillance, joining a global OECD framework already live across dozens of jurisdictions. For investors, the smart move is simple: treat every disposal as reportable, keep records, and get ahead of the 2027 data flood rather than waiting for HMRC to find you first.
The cryptocurrency market remains highly volatile. This article is for informational purposes only and does not constitute financial or tax advice.
Disclaimer: This article is for informational purposes only and does not constitute financial advice.
240 people holding over half of all taxable gains while 17,600 filed disposals. That concentration is wild
the flatline is real. 65 percent of filers under 25k in gains is basically administrative overhead for hmrc to collect pocket change
17,600 filings mostly pocket change and the 240 doing 717m. hmrc built a whole database to find 300 people, the rest of us just paid the postage lol
17,600 filers and 240 of them booked over half of 1.38 billion in gains. the chart on this must be a spike and a flatline lol
And the 65% reporting under 25k still had to file every disposal. HMRC just got itself a full database and an audit roadmap in one tax year.
65 percent filing under 25k gains still handed HMRC full KYC histories for free. the compliance cost of that database dwarfs whatever those small filers owed
the database is the product honestly. 17,600 filers mapped this year, next year they just run the diff
717 million across 240 people, avg nearly 3m each. and thats just the ones who DECLARED lol
avg 3m across 240 people and the undeclared crowd still sleeps fine tonight. hmrc opening the spreadsheet era changes that real quick
sleeping fine is doing a lot of work there. hmrc can look back years and the penalties compound lol
717m declared and who knows how much undeclared. the exchanges already handed over the names so that gap is basically a to-do list for their audit team now
exchange data sharing plus that new to-do list means the undeclared gap gets hunted top down. the 240 who actually declared are the ones sleeping fine tonight
First time HMRC publishes these figures and suddenly everyone remembers CGT exists. Should have seen this coming years ago.
^ the kyc exchange data sharing is what did it. hmrc basically got handed the whole spreadsheet
meanwhile the people who ran everything through non reporting offshore venues are the actual target. the 240 who declared are the honest ones getting a public shaming
717 million across 240 people is an average near 3 million each in declared gains. UK crypto concentration looks worse than even the skeptics guessed
nearly 3m average per head and under 2 percent of filers booking over half the gains. i rechecked the hmrc notes twice because the skew sounded made up
1.38 billion in gains on 13.8 billion of proceeds means half these people held for minutes. hmrc taxing day traders through cgt paperwork is evil genius
minutes is generous, half those disposals are probably same-block arbitrage. cgt on that with no income offset is rough
cgt on churned volume is the sleeper issue. a trader with 500k in proceeds and 5k actual profit still files every disposal. that 13.8 billion proceeds figure is mostly churn, not profit
the churn point kills the headline too. 13.8 billion in proceeds against 1.38 billion in gains means the actual profit pool hmrc is hunting is a tenth of the scary number
held for minutes is generous, half those disposals are probably one cex to another. paying cgt on a round trip lol
240 people booking 717m and hmrc publishing these numbers on purpose. its a warning shot at everyone who didnt file, actual collections come next
Exactly, this drop is pr for the next data request. the exchanges handing over kyc records are the actual enforcement arm here
the exchange letters already went out earlier this year for some platforms. this dataset plus those kyc dumps and the diff run is trivial
agreed on the warning shot read. publishing that 717m from just 240 filers right before budget season is hmrc basically printing a target list for the next data request
240 people with 717m and everyone else filed scraps. half of them probably paid an accountant more than the tax they owed