The rule exists in one place on GOV.UK. HMRC's Cryptoassets Manual, at CRYPTO22100, says there is "no disposal if the individual retains beneficial ownership of the tokens throughout the transaction, for example moving tokens between public addresses that the individual beneficially controls (commonly described as moving tokens between wallets)". The test is beneficial ownership; the wallets are an example of it.
The guidance written for taxpayers does not say this. "Check if you need to pay tax when you sell cryptoassets", updated on 5 October 2026, lists four things that are disposals and never says what is not one. The word "wallet" appears on it once, in the records section.
The pool belongs to you, not the wallet
CRYPTO22200 says that where pooling applies "the beneficial owner of the tokens will have a single pooled asset for Capital Gains Tax purposes", and section 104(1) of the Taxation of Chargeable Gains Act 1992 pools assets "acquired by the same person in the same capacity". The unit is the person: not the wallet, not the account, not the chain.
Take a reader who bought 0.5 units on one exchange in 2021 at £24,000, 0.3 on another in 2023 at £21,000 and 0.2 into a hardware wallet in 2025 at £75,000. One pool: 1.0 unit, £33,300 of pooled cost, an average of £33,300. In 2025/26 they move the first 0.5 into the hardware wallet, which changes nothing, then sell 0.2 at £60,000.
The right answer takes 0.2 of the pooled average: £6,660 of cost against £12,000 of proceeds, a gain of £5,340. Less the £3,000 annual exempt amount for 2025/26 that is £2,340 taxable, so £421.20 at 18 per cent or £561.60 at 24. Compute it from the wallet and the 0.2 sold looks like the 0.2 bought at £75,000: a £15,000 cost and a £3,000 loss. An £8,340 error, which moves the reader from someone who must report to someone who thinks there is nothing to.
Where it stops being simple
Take the fee first. CRYPTO22150 lists "transaction fees paid for having the transaction included on the distributed ledger" as allowable, unqualified. Section 38 cannot carry that: its limbs hang off an acquisition, a disposal, or expenditure on the asset itself, and a transfer you own either end of is none of the three. HMRC knows this, saying of a foreign currency deposit on the same page that retained beneficial ownership means "there's no acquisition or disposal that the costs can be attributed to". It has never written that row for tokens.
Wrapping is worse. CRYPTO22110 says the answer "will depend on the facts", resolves only one-way irreversible transfers, never mentions wrapped tokens and has not been revised since November 2021. The reporting manual, meanwhile, treats wrapping as an exchange of one asset for another "for the purposes of the CARF". Your wrap therefore reaches HMRC labelled an exchange while no page tells you whether it was a disposal.
A transfer changes nothing in the pool. Not the units, not the pooled cost, not the average. The pool is blind to the movement.
What the exchange will tell HMRC
UK providers have collected data under the Cryptoasset Reporting Framework since 1 January 2026, and the first reports fall due between 1 January and 31 May 2027. Transfers are their own reportable category, and a provider must "distinctly report" a transfer to an external wallet with "the type of cryptoasset, aggregate number of units, aggregate fair market value in fiat currency". No cost-basis field exists, so a withdrawal to your own cold storage arrives as a gross outbound value with nothing attached to show you still own it.
What it costs and what it allows
The cost is record-keeping nobody asks for, and one line of HMRC's guidance now looks odd: you "may also want to keep other records such as wallet addresses" — optional — while providers must retain those same addresses for at least five years. What it allows is the better half: consolidating custody, rotating addresses and switching exchanges without triggering a disposal or disturbing a figure in your pool.
| Annual exempt amount, 2025/26 and 2026/27 | £3,000 |
| CGT rates for individuals, both years | 18% and 24% |
| Rate switches at | £37,700 of taxable income plus net gains |
| Worked example, pooled gain | £5,340 on £12,000 of proceeds |
| Same disposal, computed per wallet | a £3,000 loss |
| Online return and payment, 2025/26 | 31 January 2027 |
| First CARF reports | 1 January to 31 May 2027 |
| Cost basis in a CARF report | no such field |
Sources retrieved 26 October 2026, with each page's last-updated date: Cryptoassets Manual CRYPTO22100 and CRYPTO22150 (26 March 2021), CRYPTO22110 (22 November 2021), CRYPTO22200 (17 November 2025); "Check if you need to pay tax when you sell cryptoassets" (5 October 2026); Capital Gains Tax rates and annual tax-free allowances (13 April 2026); Income Tax rates and allowances (6 April 2026); Self Assessment deadlines; International Exchange of Information Manual IEIM8000555, IEIM8000575 and IEIM8000585 (4 November 2025); "Reporting cryptoasset user and transaction data" (3 June 2026); and sections 38 and 104 of the Taxation of Chargeable Gains Act 1992. Contested: CRYPTO22150's unqualified allowance of transaction fees reads wider than section 38 permits, and the statute governs. Unverified: HMRC has published nothing on fees paid on a transfer that is not a disposal. Figures are as at 26 October 2026 and the Budget on 28 October 2026 may change the allowance or the rates. Worked example computed in Python, illustrative, English bands assumed. General information, not tax advice — your circumstances decide the treatment. Not a recommendation to buy, sell or hold anything.