Important: This Is General Information, Not Personal Tax Advice
Tax rules are complex, change from year to year, and depend heavily on your individual circumstances. This guide explains the general framework HMRC applies to crypto so you understand the basics, but it isn’t personalised advice. Before filing, speak with an accountant or use HMRC’s own guidance for your specific situation.
How HMRC Views Crypto
HMRC does not treat cryptocurrency as currency. It treats it as property, referred to as “cryptoassets” or “tokens.” This single classification decision is why crypto gets taxed the way it does: like selling a stock or a piece of property, not like spending money.
Because of this, most crypto activity falls into one of two tax categories: Capital Gains Tax or Income Tax, depending on what you actually did.
Capital Gains Tax: When You Dispose of Crypto
You trigger a potential Capital Gains Tax event whenever you “dispose” of crypto, which includes:
- Selling crypto for GBP or another fiat currency
- Trading one cryptocurrency for another
- Spending crypto on goods or services
- Gifting crypto to someone who isn’t your spouse or civil partner
For the 2025/26 tax year, the annual tax-free allowance for capital gains is £3,000. Gains above that are taxed at 18% for basic-rate taxpayers and 24% for higher and additional-rate taxpayers. This allowance has been reduced significantly in recent years, so don’t rely on older figures you may have seen elsewhere.
The calculation itself is simple in principle: Proceeds minus Cost Basis equals Gain or Loss. Your cost basis is what you originally paid for the crypto, including any transaction fees.
Income Tax: When You Earn Crypto
Separately from disposals, you may owe Income Tax if you receive crypto as:
- Payment for work or services
- Mining rewards
- Staking rewards
- Certain airdrops received in exchange for an action (rather than received for free with no strings attached)
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Income Tax rates follow the standard UK bands: 0% up to your personal allowance (£12,570), then 20%, 40%, or 45% depending on your total income. Crypto income also potentially involves National Insurance contributions in some circumstances.
Why You Might Pay Tax Twice on the Same Crypto (But Not Twice on the Same Value)
This is one of the most misunderstood parts of UK crypto tax. If you earn staking rewards, you may owe Income Tax on their value at the time you received them. Later, when you sell that same crypto, HMRC applies Capital Gains Tax only to the change in value since you received it, not the full amount again.
For example: you earn £1,000 worth of staking rewards (taxed as income). It later grows to £1,400 and you sell it. Only the £400 increase is assessed for Capital Gains Tax. You’re taxed once on the income, and separately only on the profit made afterward.
How to Report Crypto to HMRC
- Keep records of every transaction throughout the tax year, including dates, GBP values, and transaction fees. Using an FCA-registered exchange makes this far easier since you can export a full transaction history.
- Determine which transactions were disposals (Capital Gains Tax) versus income events (Income Tax).
- Calculate your total gains and income for the tax year, which runs 6 April to 5 April.
- File via Self Assessment, with a dedicated crypto section on the capital gains pages. The online filing deadline is 31 January following the end of the tax year.
- Report losses too, even if you’re under the allowance, since they can typically be carried forward to offset future gains.
What’s Changing: Increased HMRC Visibility
From January 2026, UK-regulated crypto platforms are required to collect and report standardised transaction data under a framework called CARF (Crypto-Asset Reporting Framework). This means HMRC will increasingly be able to cross-reference what platforms report against what individuals declare on their tax returns. Discrepancies between the two are more likely to draw attention than in previous years, making accurate self-reporting more important than ever.
Frequently Asked Questions
Do I owe tax if I just buy and hold crypto?
No. Simply buying and holding crypto isn’t a taxable event. Tax is triggered by disposal (selling, trading, spending, or gifting) or by receiving crypto as income.
What happens if I don’t report my crypto gains?
Under HMRC rules, undisclosed gains can lead to penalties on top of the tax owed, and in serious cases of deliberate evasion, criminal prosecution. HMRC does offer a voluntary disclosure route for correcting past errors.
Do I pay tax on crypto-to-crypto trades?
Yes. Trading one cryptocurrency for another counts as a disposal of the first asset and can trigger Capital Gains Tax, even though no GBP changed hands.
Is moving crypto between my own wallets taxable?
No. Transferring crypto you own between your own wallets isn’t a disposal, since you haven’t given up ownership.
The Bottom Line
UK crypto tax comes down to two questions: did you dispose of an asset (Capital Gains Tax), or did you receive crypto as income (Income Tax)? Keep detailed records as you go, understand your allowances, and given how much visibility HMRC now has into platform data, treat accurate reporting as non-negotiable rather than optional. For anything beyond the general framework covered here, a qualified accountant is worth the cost.
