Antminer Z15 Pro
Zcash & Horizen ASIC Miner
860KSOL
HASHRATE
3.3W/KSOL
EFFICIENCY
2838W
POWER
£1417.20
EST. MONTHLY
9
Months
EST. ROI
UK crypto tax allowance: UK guidance on HMRC treatment, records, valuations, costs and evidence to retain before filing or taking qualified advice.
TL;DR
- The £3,000 annual exempt amount applies to net chargeable gains, not the value of crypto sold and not mining income. Income allowances have separate conditions.
- Keep contemporaneous GBP valuations and evidence for income, acquisitions and disposals.
- Use current HMRC guidance and get qualified advice for the facts of your operation.
UK crypto tax allowance in simple English
UK crypto tax allowance: A £1,000 trading allowance can apply to certain gross trading or miscellaneous income. But it cannot be combined with actual expenses for the same income and its interaction with other income sources must be checked.
Simple example
A UK business owner is checking UK crypto tax allowance. For people in 2026/27 the annual exempt amount is £3,000. Selling £10,000 of Bitcoin does not mean a £10,000 gain.
Key terms in plain English
- Wall power:
- The electricity measured at the socket or supply. It includes losses that a headline chip figure may leave out.
- Mining pool:
- A service that combines work from many miners and shares rewards using stated rules.
- Share:
- Proof sent by a miner to show completed work. A pool uses accepted shares when calculating rewards.
- Difficulty:
- A network value that changes how hard it is to find a valid block. Rising difficulty can reduce the expected reward for the same hashrate.
- Firmware:
- Software stored on the miner that controls its hardware. Use a trusted source and check model compatibility.
The Capital Gains Tax annual exempt amount
For people in 2026/27 the annual exempt amount is £3,000. It applies across chargeable gains for the year, not separately to each wallet, token or exchange.
Proceeds are not gains
Selling £10,000 of Bitcoin does not mean a £10,000 gain. The calculation uses disposal proceeds, allowable costs, matching rules and losses. Reporting duties can still arise even where tax is nil.
Mining income is separate
The annual exempt amount does not shelter mining reward income. Non-trading rewards may be miscellaneous income and appropriate expenses may be deductible. Trading cases follow trading rules.
The trading and miscellaneous-income allowance
A £1,000 trading allowance can apply to certain gross trading or miscellaneous income. But it cannot be combined with actual expenses for the same income and its interaction with other income sources must be checked.
Companies do not use individual allowances
A company accounts for profits and gains within Corporation Tax and does not claim an individual's annual exempt amount. Use company accounts and advice.
Practical checks for UK crypto tax
Start with the exact equipment, network or service described in this guide. Record the model, firmware, rated and measured wall power, supported algorithm, pool endpoint and the date on which each fact was checked. A product name or broad algorithm label is not enough to prove compatibility.
For mining tax, regulation and compliance, calculate the position using the electricity tariff actually payable, pool fees, rejected shares, expected uptime, cooling load and maintenance. Keep gross revenue separate from operating cost. Repeat the calculation with lower revenue and higher difficulty so the downside is visible before money or equipment is committed.
Confirm that fixed wiring, protective devices, cabling, ventilation and access arrangements suit continuous operation. Use a competent electrician where fixed electrical work is involved. Keep firmware and wallet credentials secure, test with one worker first and retain a written baseline so later changes can be compared with evidence.
Keep dated records of coins received, sterling values at the transaction time, wallet addresses, pool statements, exchange records, fees and directly related costs. A later disposal is a separate event from receiving a mining reward. The treatment can also differ between an individual, a sole trade and a limited company. So the facts and the entity must be identified before a return is prepared.
HMRC guidance distinguishes activity carried on as a trade from activity that does not amount to a trade. Frequency, organisation, risk and commercial character can all matter. Do not assume that a label such as hobby, investment or business decides the answer by itself. Retain the evidence used for each valuation and ask a suitably qualified tax adviser about material or unusual transactions.
Frequently asked questions
What is the main point of UK crypto tax allowance?
UK crypto tax allowance: A £1,000 trading allowance can apply to certain gross trading or miscellaneous income.
For UK crypto tax allowance, what should a beginner know about the Capital Gains Tax annual exempt amount?
For people in 2026/27 the annual exempt amount is £3,000.
For UK crypto tax allowance, what should a beginner know about proceeds are not gains?
Selling £10,000 of Bitcoin does not mean a £10,000 gain.
For UK crypto tax allowance, what should a beginner know about mining income is separate?
The annual exempt amount does not shelter mining reward income. Non-trading rewards may be miscellaneous income and appropriate expenses may be deductible.
Conclusion: UK crypto tax
The £3,000 annual exempt amount applies to net chargeable gains, not the value of crypto sold and not mining income. Income allowances have separate conditions. Keep contemporaneous GBP valuations and evidence for income, acquisitions and disposals.
Useful next steps
Authoritative references
Use current official guidance because tax rules and HMRC guidance can change.
Join the ASIC Mining Discussion
Members can read and join the discussion
Log in to read comments from other miners. Create a free account if you would like to ask a question or share your experience.
Membership helps us protect the discussion from spam and keep answers useful.