Is There a Crypto Tax? (UK) 2026/27 Practitioner Guide

When clients ask, “Is there a crypto tax in the UK?”, you must clarify that HM Revenue & Customs (HMRC) does not apply a bespoke, standalone tax to digital assets. Instead, cryptoassets fall squarely within the existing frameworks of Capital Gains Tax (CGT) and Income Tax.

For the 2026/27 tax year, the government has overhauled the applicable CGT rates and introduced the Crypto-Asset Reporting Framework (CARF), which fundamentally changes HMRC’s visibility into domestic crypto portfolios. This guide outlines how you must calculate, classify, and report your clients’ cryptoasset activities.

The Default Position: Capital Gains Tax (CGT)

HMRC operates on the presumption that individuals buy and sell cryptoassets as personal investments for capital appreciation.  Consequently, the vast majority of clients will pay Capital Gains Tax when they dispose of their tokens.

A disposal for CGT purposes includes selling tokens for fiat currency, exchanging one type of cryptoasset for another, using tokens to pay for goods, or giving them away.

2026/27 CGT Rates and the Annual Exemption

For the 2026/27 tax year, the Annual Exempt Amount (AEA) remains capped at a strict £3,000 limit, meaning any net gains below this threshold are entirely tax-free. If a client’s net gains exceed £3,000, new statutory rates apply.

Following recent legislative changes, the main rates of Capital Gains Tax for non-residential assets (including cryptoassets) are:

• 18% for basic rate taxpayers.
• 24% for higher and additional rate taxpayers.

The Section 104 Pooling Rules

You cannot arbitrarily match the sale of tokens to specific acquisitions to manipulate the gain. Section 104 of the Taxation of Chargeable Gains Act 1992 (TCGA 1992) dictates that any number of securities or tokens of the same class acquired by the same person must be treated as a single pooled asset.

(1) Any number of securities of the same class acquired by the same person in the same capacity shall for the purposes of this Act (subject to express provision to the contrary) be regarded as indistinguishable parts of a single asset growing or diminishing on the occasions on which additional securities of the same class are acquired or some of the securities of that class are disposed of.

When a client disposes of tokens, you must deduct a proportion of this pooled average cost to find the chargeable gain.

When Income Tax Applies

In specific scenarios, cryptoasset receipts trigger Income Tax rather than CGT. HMRC confirms that individuals are liable to pay Income Tax and National Insurance contributions (NICs) on cryptoassets received from:

• Their employer as a form of non-cash payment.
• Mining and transaction confirmation activities.
• Airdrops provided in return for a service.

For the 2026/27 tax year, section 2 of the Finance Act 2026 sets the main rates of Income Tax at 20% (basic rate), 40% (higher rate), and 45% (additional rate).  Taxpayers can offset these receipts using their standard Personal Allowance, which remains frozen at £12,570.

In the highly unusual event that a client’s buying and selling activity is so sophisticated and frequent that it amounts to a financial trade, the Income Tax rules take priority over the Capital Gains Tax rules entirely.

Decentralised Finance (DeFi) Lending and Staking

If your client generates a yield by lending or staking their cryptoassets via Decentralised Finance (DeFi) protocols, the tax treatment is complex.

HMRC does not classify the return earned by a liquidity provider or lender as “interest” for tax purposes.  Instead, if the return has the nature of income, it falls within the scope of the miscellaneous income “sweep-up provisions” found in sections 687-689 of the Income Tax (Trading and Other Income) Act 2005 (ITTOIA 2005).

When executing the tax computation for these DeFi rewards, you must calculate the amount chargeable based on the pound sterling value of the tokens at the exact time the client receives them.  The repayment of the underlying principal tokens by the protocol remains a separate capital transaction subject to CGT.

The 2026/27 Trap: CARF Automatic Reporting

The most significant compliance change for the 2026/27 tax year is the implementation of the OECD Crypto-Asset Reporting Framework (CARF).

Under section 275 of the Finance Act 2026, UK Reporting Cryptoasset Service Providers (RCASPs)—which includes all domestic cryptocurrency exchanges—are legally required to collect data and make reports to HMRC regarding their UK resident users.

This transparency regime commences on 1 January 2026, meaning RCASPs will track every transaction your client makes throughout the year.  The exchanges must submit their first comprehensive reports (covering the period from 1 January 2026 to 31 December 2026) directly to HMRC by 31 May 2027.

Summary of UK Crypto Tax Rules (2026/27)

Next steps for advisors: Request complete CSV transaction exports from all your clients’ UK and offshore exchanges ahead of the 2026/27 tax year, and utilise specialised crypto tax software to establish accurate section 104 holding pools before the May 2027 CARF reporting deadline exposes their trading histories to HMRC.