HMRC Data: 240 UK Crypto Millionaires Hold 52% of Sector Gains

New HMRC data reveals 240 UK crypto investors generated £717M in profits, accounting for over half of the sector's total reported capital gains.

The first specialized dataset from HM Revenue & Customs (HMRC) has exposed both the intense concentration of wealth within the UK crypto sector and the vast scale of information authorities are now gathering on digital asset investors.

£717 Million in Gains Concentrated Among Just 240 People

HMRC data provides the most detailed look yet at who in the UK is declaring capital gains from digital assets and the actual size of the taxable market.

A total of 17,600 individuals declared taxable disposals of crypto assets during the 2024/2025 period. These filings include not only token sales for sterling but also other operations that constitute a taxable event under British regulations.

The total value of declared sales and other disposals reached £13.8 billion, resulting in approximately £1.38 billion in realized capital gains.

While the average declared profit sits at roughly £78,000 per person, this figure masks an incredibly uneven distribution of wealth.

Just 240 taxpayers with profits exceeding £1 million declared a combined £717 million. This means approximately 52% of all reported crypto capital gains are concentrated among just 1.4% of the declaring investors.

This concentration makes the top tier of the market far more significant for tax revenue than the total number of participants might suggest.

Crypto Investors Are Younger and Predominantly Male

The data also highlights a demographic profile that differs sharply from traditional investors who declare capital gains.

Approximately 87% of those reporting crypto assets are men, while women represent only 13% of the group.

Age distribution follows a similar trend of divergence. With 54% of investors aged between 25 and 44, this group is significantly younger than the typical taxpayer declaring other forms of capital gains.

This shift is significant for HMRC, as crypto assets extend tax oversight to a demographic that may traditionally have less experience with Capital Gains Tax rules.

The complexity of crypto trading further complicates the issue. A tax event can be triggered not only when converting cryptocurrency to pounds but also during certain exchanges between different digital assets.

HMRC Increases Pressure on Undeclared Crypto Profits

The release of these statistics coincides with a tightening of tax controls across the sector.

According to the data, HMRC has issued roughly 81,000 warning letters to individuals suspected of failing to properly declare their digital asset obligations. This represents a year-on-year increase of approximately 25%.

Receiving such a letter does not automatically imply a confirmed violation. Instead, it demonstrates that the tax administration possesses information that may not align with the figures provided in a specific taxpayer’s declaration.

This capacity for cross-referencing information is set to expand significantly in the coming years.

Crypto Platforms to Report Data to Tax Authorities from 2027

The UK is implementing the OECD’s Crypto-Asset Reporting Framework (CARF). This regime is designed to bring crypto tax reporting closer to the automatic information exchange systems already used for traditional financial accounts.

Under this new system, crypto service providers will be required to collect and share specific customer and transaction data with tax authorities.

For HMRC, this marks a fundamental shift in sector monitoring. Rather than relying primarily on voluntary declarations and subsequent audits, the administration will be able to verify tax returns against data received directly from the platforms.

HMRC to Begin Receiving Data Under New Regime in 2027

The £13.8 billion turnover reveals why crypto has become a high-priority tax target.

While HMRC’s initial statistics cover a relatively small pool of 17,600 people, the sheer value of the declared operations explains why the sector is under increasing scrutiny.

The concentration of profits is the most critical factor. With more than half of the £1.38 billion in gains attributed to just 240 individuals, auditing a small number of high-income investors can have a disproportionately large impact on total tax collection.

CARF will bring unprecedented transparency to this group and the wider crypto market. Consequently, these initial HMRC statistics serve as more than just a snapshot of 2024/2025 profits—they are the baseline for a transition toward automated crypto tax enforcement in the UK.