Tax avoidance through illegal schemes is a serious risk. But there are several entirely legitimate, HMRC-approved ways to reduce your crypto CGT bill.
Use your full annual exempt amount
The £3,000 annual CGT allowance applies each tax year and cannot be carried forward if unused. If your gains are above £3,000, consider whether you can plan disposals across tax years. If your gains are just above the threshold, selling some positions at a loss can reduce your taxable amount.
Report and carry forward losses
Losses reduce your total gain and can be carried forward indefinitely to offset future profits. You must claim them in the year they arise by completing SA108. Many people miss this — a loss year that goes unreported is a loss year wasted.
Transfer to a spouse before disposal
Transfers of assets between spouses or civil partners are treated as a no-gain, no-loss disposal. This means your spouse can acquire crypto at your original cost and use their own annual exempt amount on any future disposal. This effectively doubles your CGT-free allowance.
Timing your disposals across tax years
The tax year ends on 5 April. If you plan to sell a large position, splitting the disposal across two tax years (selling some before 5 April and some after 6 April) can use two years' worth of allowances. Plan this carefully with the 30-day rule in mind.
Include all allowable costs
Transaction fees, network gas fees, and costs of acquisition are all allowable costs that reduce your gain. Many calculators miss some of these. Make sure your cost basis includes all fees paid when buying and that selling fees are deducted from your proceeds.
These are general strategies, not personalised advice. The 30-day bed-and-breakfasting rule means that selling and rebuying within 30 days is specifically anti-avoidance legislation. Always consult a qualified adviser before implementing tax planning strategies.
Frequently asked questions
Can I use a Bed and ISA strategy for crypto?
No. Cryptocurrency cannot currently be held in a UK ISA, so you cannot transfer gains into an ISA wrapper to shelter future growth. Any gains from crypto are fully subject to CGT. The government has indicated crypto ISAs may be possible in future, but no date has been confirmed.
Does transferring crypto to my spouse reset the cost basis?
No. Transfers between spouses are treated as no-gain, no-loss — the receiving spouse takes over your original cost basis, not the current market value. This is still valuable because they can use their own £3,000 annual allowance when they eventually sell, but there is no step-up in cost basis.
Is there any risk with the annual disposal strategy?
The 30-day rule is the main risk. If you sell to realise a gain up to the £3,000 allowance and repurchase the same crypto within 30 days, HMRC matches the sale against the repurchase — potentially eliminating the gain you were trying to crystallise. If you rebuy, wait more than 30 days or buy a different asset.
Can I offset crypto losses against my income (salary)?
No. Capital losses can only offset capital gains, not income. If your crypto losses exceed your capital gains for the year, the surplus carries forward to future capital gains. You cannot deduct crypto losses from your employment income or any other income.
How do I know if a cost reduction strategy is illegal tax avoidance vs. legitimate planning?
Legitimate planning uses reliefs and allowances that Parliament explicitly intended to be used — such as the annual exempt amount, spouse transfers, and loss relief. Artificial schemes that have no commercial purpose beyond creating a tax benefit are avoidance. When in doubt, consult a qualified tax adviser.
Are there any crypto-specific pension or retirement vehicles in the UK?
Not directly. You cannot hold crypto in a SIPP or other UK pension. Some pension providers invest in crypto-related equities (ETFs, mining companies), but direct crypto investment via pension is not currently available in the UK.
General information only. Consult a qualified tax adviser.