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Story: 240 UK Crypto Millionaires Report £717M in Gains, HMRC Reveals

By Sakamoto Nashi

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The 2024-2025 Numbers in Full. Zoom out from the millionaire bracket and the picture gets bigger.

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CARF Kicks In — and the Penalties Are Real. The UK adopted the Cryptoasset Reporting Framework, known as CARF, from January 2026.

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Self Assessment Deadlines and What Holders Need to Do. For the 2025-2026 tax year, anyone with cryptoasset income or gains above the tax-free allowance…

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Britain's tax authority just put numbers to something the crypto world had long suspected. HMRC published its first official data on taxable cryptoasset gains, and the figures…

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That's a lot of money sitting in a relatively small crowd.

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Zoom out from the millionaire bracket and the picture gets bigger. Across the full 2024-2025 tax year, 17,600 individuals made cryptoasset disposals that triggered Capital Gains…

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Crypto gains aren't taxed differently from other capital gains in the UK. Same rules, same rates.

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The UK adopted the Cryptoasset Reporting Framework, known as CARF, from January 2026. It's an OECD initiative, so it's not just a British thing — it's part of a wider…

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Under CARF, UK cryptoasset service providers must report customer information directly to HMRC. That obligation kicks in starting 2027.

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The framework's logic is straightforward. If HMRC can see what exchanges and service providers know about their users, it becomes a lot harder for someone to quietly sell a stack…

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Read also: UK Tax Authority Identifies 240 Crypto Millionaires Amid $18.7 Billion in Disposals

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Separately, HMRC runs a Crypto Disclosure Service on GOV.UK. It's a channel specifically for cryptoasset owners who need to come clean on unpaid taxes — whether that's from…

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Not everyone knows that. Probably a lot of people don't.

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For the 2025-2026 tax year, anyone with cryptoasset income or gains above the tax-free allowance needs to declare it through Self Assessment.

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Worth noting: a disposal isn't just selling crypto for pounds. Exchanging one cryptocurrency for another counts too.

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