UK crypto treatment depends on the transaction and taxpayer. Most individual investors consider Capital Gains Tax on disposals, while employment, trading, mining, staking and DeFi receipts can raise Income Tax questions. Use current HMRC thresholds for the filing year rather than figures copied from an older guide.
What counts as a disposal?
Selling for sterling, exchanging one token for another, spending crypto and making some gifts can be disposals. A transfer between wallets under the same beneficial ownership is generally different, but retain both transaction sides and fees.
Pooling and matching
UK calculations do not simply apply global FIFO. HMRC's same-day rule, 30-day rule and section 104 pool can determine which allowable costs match a disposal. Maintain quantities and sterling values per token and do not let a tax application silently use a U.S. lot method.
Income receipts
Crypto received from employment, services, mining, staking or other activities may be income depending on the facts. Record sterling value when received and preserve the amount used as acquisition cost for a later disposal. National Insurance and trading questions can also arise.
DeFi and beneficial ownership
Lending, liquidity pools, wrapped tokens and receipt tokens require analysis of rights transferred and returns received. HMRC guidance distinguishes transactions based on their legal and economic nature. Do not assume every deposit is tax-neutral or every accrued balance is immediate income.
Gifts and losses
Gifts to a spouse or civil partner can have different rules from gifts to others. Negligible-value claims and losses have conditions and evidence requirements. Lost access or platform failure does not automatically create an allowable loss equal to purchase cost.
Example of matching
A taxpayer sells tokens and buys the same token again within 30 days. The later acquisition may match the disposal before the section 104 pool. Software using simple FIFO can therefore calculate a different result. Retain the transaction-level sterling values and review HMRC's matching order.
Employment and business receipts
Crypto paid by an employer or customer needs records of gross value, withholding or invoicing and subsequent ownership. A later token disposal is separate from the original earnings event. Keep payroll or business records linked to the acquired lot.
Records and reporting
- dates, token quantities and sterling values;
- transaction IDs and wallet addresses;
- bank and exchange statements;
- fees and allowable costs;
- pool calculations and matching rules;
- income classifications and later disposals;
- DeFi terms and beneficial-ownership analysis.
Current-year checks
Before filing, verify the annual exempt amount, rates, Self Assessment deadlines and any reporting service changes directly with GOV.UK. Thresholds can change between tax years even when the underlying transaction rules remain similar.
Also check residence and remittance questions when wallets, work or exchanges span countries.
How to Reconcile UK Crypto Transactions Before Filing
For UK taxpayers, the most useful final check is not simply comparing an exchange’s “profit” figure with a tax return. HMRC’s cryptoasset guidance treats the tax result as a transaction-by-transaction calculation, so reconcile every disposal with the acquisition cost, valuation and records supporting it. HMRC’s Cryptoassets Manual is the primary reference for individual cryptoasset transactions and was updated on 28 November 2025.
Build a working paper for each tax year ending 5 April. At minimum, include:
- the date and type of transaction, such as sale, token swap, spending or gift;
- the asset, quantity and sterling value at the relevant time;
- exchange, network and other directly attributable fees, with evidence of payment;
- the wallet or platform reference, transaction ID and any transfer explanation; and
- the acquisition source, including an earlier purchase, income receipt or a prior matched transaction.
Next, separate transfers from disposals. A movement between wallets or accounts may need to be investigated differently from a sale or exchange, but the records should still show the sending wallet, receiving wallet, date, quantity and ownership. This helps prevent a wallet transfer from being mistaken for a taxable disposal—or genuine disposal proceeds from disappearing from the calculation.
Recalculate matching in the order applicable in the UK rather than relying on an imported FIFO report. For each token, test same-day acquisitions and acquisitions in the following 30 days before applying the section 104 pooled holding. Keep the calculation showing quantities remaining after each step. If software cannot display that matching trail, export its raw data and retain a separate spreadsheet or calculation file.
Finally, compare the resulting gains and losses with the official GOV.UK Capital Gains Tax guidance. That guidance explains that Capital Gains Tax applies to the gain on disposal, not the total proceeds, and lists disposals such as selling, gifting or swapping an asset. Check the rules and allowances for the specific UK tax year before submitting, because figures and reporting requirements can change.
Primary sources
Disclaimer: Educational information only, not UK tax advice. DeFi, trading and residence questions require fact-specific review.