UK Crypto Tax Data: What HMRC’s First Report Reveals in 2026
What Is UK Crypto Tax Data and Who Collects It
Many crypto holders once believed their trades stayed between them and their exchange. On 27 August 2026, HM Revenue and Customs (HMRC) shared its first official numbers on crypto gains, and UK crypto tax data is now part of the public record.
The report reveals that individuals reported crypto gains of over £1 million in the 2024/25 tax year. The report indicates that 240 individuals reported crypto gains exceeding £1 million in 2024/25. They reported a combined total of £717m. From 2027, HMRC will also get details of customers directly from crypto platforms.
What Is UK Crypto Tax Data, and Who Collects It?
HMRC gets crypto information in two ways. The first is the self-assessment tax return. It now has a separate crypto section, which started with the 2024 to 2025 tax year. The second is a new reporting system for platforms such as exchanges, wallet apps, and NFT marketplaces.
The first figures came from tax returns. About 17,600 people made taxable sales or swaps of coins like Bitcoin, Ethereum, and Dogecoin. Their total sales value was £13.8 billion. Their total gains were £1.38 billion, which works out to roughly £78,000 per person on average.
How Does Crypto Data Move From Exchanges to HMRC?
The system follows a global standard called the Crypto Digital Asset Reporting Framework, or CARF. It was created by the OECD, and the UK began putting it in place in January 2026. Platforms collect user details and trade records and then pass them to tax offices. HMRC expects to get its first batch in 2027.
Foreign platforms are covered too. Their country's tax office sends the details to HMRC if it follows the same framework.
What Platforms Must Report in 2026
A crypto service provider is any business that lets customers buy, sell, send, or swap crypto.
The rules cover coins, NFTs, utility tokens, stablecoins, and security tokens. Each provider must collect the right data and send it to HMRC. A provider that fails to comply can face a penalty of up to £300 per user.
What Personal Details Are Included in UK Crypto Tax Data?
Every individual user must give the platform:
Full name
Date of birth
Home address and country
Tax number, such as a National Insurance number or Unique Taxpayer Reference
Companies, trusts, and similar groups give a legal name, main address, and registration or tax number. Wrong or missing details can bring a penalty of up to £300 with a UK platform. These details link each account to a tax record.
Which Transactions Count as Taxable in UK Crypto Tax Data?
Crypto could be subject to capital gains tax when it is sold. That includes:
Accepting money for tokens
Exchanging the tokens for different ones. Changing one token with another.
Using cryptocurrencies to buy products or services. Cryptocurrency payments for goods or services.
Distributing tokens to someone other than a spouse, civil partner, or charity.
Earnings from a job, business, or lender activity, or mining or staking, may instead be taxable as income. Gains above the tax allowance will be subject to reporting if the total for the tax year (from 6 April to 5 April) exceeds the tax-free allowance.
How to Match Records With Platform Reports
Exchange reports help, but HMRC says they are not tax calculations and do not track pooled costs. Holders need their own records of token type, date, amount, value in pounds, and pooled cost.
Pooling means each type of token gets one average cost. Take 100 tokens bought at £2 and 300 bought at £1. That makes 400 tokens costing £500, or £1.25 each. A different rule applies to tokens bought on the day of a sale or within 30 days after it.
Why HMRC Sends Crypto Letters and What Holders Should Do
HMRC has pushed crypto education and checks since late 2023. The department says this work brought in an extra £168 million in capital gains tax for 2024 to 2025. A mismatch between platform data and a tax return can lead to a letter.
A holder who gets one should check the records, fix any gaps, and reply before the deadline. Anyone with unpaid tax from earlier years can use the Crypto Disclosure Service. Unpaid tax can bring a penalty of up to 100% of the amount owed, plus interest.
UK Crypto Tax Data and Privacy: What Stays Protected?
Platforms collect only the identity and trade details needed for tax. Data moves between countries only under shared international rules. The published statistics are grouped and rounded, so no single person is identified.
Common Mistakes That UK Crypto Tax Data Can Expose
Thinking a crypto-to-crypto swap is tax-free
Forgetting that spending crypto counts as a sale
Trusting exchange reports instead of keeping pooled costs
Missing the same-day and 30-day rules
Leaving out mining, staking, or lending income
Giving a platform the wrong personal details
Step-by-Step: How to Prepare Crypto Records for Tax Reporting
List every crypto wallet and platform used so far.
Download the full trade history from each one.
Note each sale with the date, token, amount, and value in pounds.
Build one pool per token type and apply the 30-day rules.
Add allowed costs, such as trading fees.
Keep income separate from gains.
Fill in the crypto section of the 2025 to 2026 tax return by 31 January 2027.
Use the Crypto Disclosure Service for any older unpaid tax.
Conclusion
The first release shows that HMRC already tracks crypto gains closely. From 2027, platform reports will give it an even wider view.
Clean records, correct personal details, and on-time filing remain the safest ways to handle UK crypto tax data .
Disclaimer
This article is for informational purposes only and is not financial, investment, legal, or tax advice. Crypto and crypto card use carry high risk, and returns or availability are never guaranteed. Readers should research independently and consult a licensed professional before any decision.
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