✍️ Author: Karel Havlíček · 📅
The UK is now outside the EU crypto rulebook
Most European guidance you will read about buying Bitcoin is written around MiCA, the EU regulation that has applied since December 2024. MiCA does not apply in the UK. Firms carrying on cryptoasset activity here register with the Financial Conduct Authority for anti-money-laundering purposes instead, and crypto promotions must carry prescribed risk warnings under the FCA's financial promotions regime. If a platform tells you it is «MiCA licensed», that is a statement about its EU business, not about UK protections.
Bitcoin is a decentralised digital currency with a supply permanently capped at 21 million units — no central bank can create more. That is the same everywhere; what differs country to country is the tax and regulatory wrapper around it, and the UK's is genuinely distinctive.
What you actually pay
- 18% on gains falling within your basic rate band, 24% on gains above it.
- Your other income for the year decides how much of the gain sits in each band — the rate is not a property of the gain alone.
- £3,000 annual exempt amount, covering net gains across all chargeable assets, not just crypto.
- Report on the SA108 capital gains pages of Self Assessment by 31 January following the tax year.
- Reporting is also required where total disposal proceeds exceed £50,000, even if the gain is small.
This is general information, not personal tax advice — check your own position with HMRC or a qualified accountant.
The allowance lost three quarters of its value in two years
This is the single change that has pulled the most ordinary UK investors into filing for the first time, and it happened quietly. The annual exempt amount was £12,300 in 2022/23, fell to £6,000 in 2023/24, and has been £3,000 since 2024/25.
Nothing about Bitcoin changed. What changed is that a gain which was comfortably covered three years ago now produces a tax bill and a filing obligation. People who sold a modest holding and correctly concluded they had nothing to report in 2022 can reach the opposite conclusion on an identical disposal today. If you last checked your position before 2024, check it again.
Pooling: the UK rule that makes crypto maths different
Here is where UK treatment diverges sharply from most of Europe. You do not match a sale to a specific purchase. HMRC applies the same share identification rules used for shares, in this order:
- Tokens acquired on the same day as the disposal.
- Tokens acquired in the 30 days after the disposal.
- Otherwise, the Section 104 pool — all your remaining tokens of that type merged into one holding with one averaged cost.
The practical effect is that «I sold the coins I bought in 2017, so my gain is huge» and «I sold the ones I bought last month, so my gain is nil» are both wrong. Your cost is the pooled average, adjusted every time you buy more. Anyone who has been buying regularly for years has a pool that cannot be reconstructed from memory — which is the strongest argument for keeping a running record from the first purchase rather than assembling one under deadline pressure in January.
The 30-day rule also blocks the obvious manoeuvre of selling to crystallise a loss and buying straight back. Repurchase within 30 days and the disposal is matched against that repurchase instead of the pool.
Swaps are disposals, even with no cash out
HMRC treats exchanging one cryptoasset for another as a disposal of the first. A gain or loss arises at that moment, measured in pounds, regardless of whether anything reached your bank account. This is the most common source of unexpected UK tax bills: a year of active swapping can generate a real liability with no sterling ever withdrawn to pay it from.
How to start — recommended platform
On this page we recommend a regulated platform: Coinbase. The full review, with advantages, drawbacks and concrete steps, is here: Coinbase review. The complete comparison of regulated platforms with an interactive test is here.
Funding is normally a Faster Payments transfer in sterling, which usually arrives within minutes. One detail that costs people money: the advertised commission is rarely the real cost — the spread between the price shown to you and the market price usually weighs more than the fee itself. Compare how much Bitcoin you actually receive at the end, not the advertised percentage.
DCA — investing without guessing the moment
Rather than trying to time the best entry, most long-term investors use DCA (dollar-cost averaging): regular fixed-amount purchases regardless of short-term swings. It does not remove risk; it removes the need to guess the right moment. Under UK pooling it also has a tidy side effect — regular buying is exactly what the Section 104 pool is designed to handle, so the record-keeping stays simple.
🧮 DCA calculator
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Bitcoin bought: BTC
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A model based on your assumption – not a forecast and not financial advice. Default 0% = price does not change.
❓ Frequently asked questions
Is buying Bitcoin legal in the UK?
Yes. Buying and holding Bitcoin is legal in the UK. Firms carrying on cryptoasset activity here must be registered with the Financial Conduct Authority for anti-money-laundering purposes, and crypto promotions must carry prescribed risk warnings. Note that the EU's MiCA regulation does not apply in the UK.
How much capital gains tax do I pay on Bitcoin in the UK?
Gains above the annual exempt amount are charged at 18% where the gain falls within your basic rate band and 24% above it. The annual exempt amount is £3,000, covering your net gains across all chargeable assets, not just crypto.
Is swapping one cryptocurrency for another taxable in the UK?
Yes. HMRC treats a swap as a disposal of the first asset, so a gain or loss arises even though no pounds ever reached your bank account. This catches a lot of people, because the tax can be due in a year when nothing was withdrawn.
When do I have to report crypto to HMRC?
Through Self Assessment, on the SA108 capital gains pages, by 31 January following the end of the tax year. Reporting is required if your gains exceed the annual exempt amount, and also where total disposal proceeds exceed £50,000 even if the gain itself is small.
This article is informational and does not replace personalised tax or investment advice. Links to Coinbase are partner links (rel="sponsored") – they do not change the price you pay. Rates and the regulatory position are based on publicly available information as of July 2026 and may change – always confirm with HMRC or a qualified adviser.