Crypto Taxes in the UK: How Cryptocurrency Gains Are Taxed and Declared on Self Assessment!
A complete 2026/27 guide to UK cryptocurrency tax: Bitcoin, Ethereum, crypto-to-crypto trades, Capital Gains Tax, staking, mining, DeFi, airdrops, losses, NFTs, Self Assessment and HMRC’s new Cryptoasset Reporting Framework
Cryptocurrency can create a UK tax liability even if you have never withdrawn any money to your bank account.
This is probably the single most important point for anyone investing in Bitcoin, Ethereum or other cryptoassets.
Many people assume:
“I only pay tax when I convert my crypto back into pounds.”
That is incorrect.
For UK tax purposes, exchanging Bitcoin for Ethereum, using crypto to buy something, giving crypto to another person, or carrying out certain DeFi transactions can all potentially create taxable events—even where no GBP ever reaches your bank account. HMRC treats most individuals who buy crypto as investors, meaning Capital Gains Tax normally applies when the cryptoassets are disposed of. Income Tax can instead apply when crypto is received through activities such as staking, mining, lending, employment or certain airdrops. (GOV.UK)
And from 1 January 2026, another major change has made crypto tax compliance even more important: the UK's Cryptoasset Reporting Framework — CARF has started operating. UK cryptoasset service providers are now required to collect specified information about users and transactions, with the first reports covering the 2026 calendar year due to HMRC by 31 May 2027. (GOV.UK)
So crypto tax is no longer something investors should assume HMRC cannot see.
First: Is Cryptocurrency Actually Taxed in the UK?
Yes.
HMRC does not regard cryptoassets as money or currency for Capital Gains Tax purposes. Instead, cryptoassets capable of being owned and having a realisable value are generally treated as chargeable assets. (GOV.UK)
However, there is no single special tax called:
“Crypto Tax.”
The tax depends on what you did with the crypto.
For most individual investors:
buying and later disposing of crypto → Capital Gains Tax
For certain crypto received as income:
staking / mining / lending / employment / some airdrops → Income Tax
For the relatively unusual individual whose crypto activity amounts to an actual financial trade:
trading profits → Income Tax rather than CGT
HMRC says that, in the vast majority of cases, individuals hold cryptoassets as personal investments rather than conducting a trade in cryptoassets. (GOV.UK)
Simply Buying Crypto Does Not Normally Create Tax
Suppose you transfer:
£10,000 from your bank account
to a cryptocurrency exchange and buy:
£10,000 of Bitcoin.
You have not made a profit merely by buying the Bitcoin.
There is therefore normally no Capital Gains Tax simply because you bought crypto.
The taxable event generally comes later, when you dispose of it. HMRC specifically confirms that someone who purchases tokens does not pay tax simply on buying them, although tax may arise when they are later disposed of. (GOV.UK)
What Counts as a Crypto Disposal?
This is where many investors make mistakes.
A disposal includes much more than selling crypto for pounds.
HMRC treats the following as disposals:
selling crypto for money;
exchanging one cryptoasset for another;
using crypto to pay for goods or services;
and
giving crypto away to another person, except for certain transfers to a spouse, civil partner or charity. (GOV.UK)
This means all of the following can potentially trigger Capital Gains Tax:
BTC → GBP
BTC → ETH
ETH → USDT
SOL → BTC
Bitcoin → laptop
Ethereum → car
crypto gifted to a friend
You do not need to cash out into your bank account first.
Crypto-to-Crypto Trades Are Taxable Events
This is perhaps the biggest misconception in crypto taxation.
Imagine you bought Ethereum for:
£1,200
Later, Ethereum is worth:
£2,000
You exchange the Ethereum directly for Solana.
No pounds enter your bank account.
Nevertheless, for CGT purposes you have disposed of Ethereum.
Simplified calculation:
Market value of ETH disposed of: £2,000
Original allowable cost: £1,200
Gain: £800
The new Solana acquired would broadly have an acquisition value of £2,000 for future CGT calculations, subject to the relevant matching, pooling and transaction-cost rules.
HMRC specifically identifies exchanging tokens for a different type of token as a disposal. (GOV.UK)
The same principle can therefore apply when exchanging cryptocurrency for stablecoins.
Crypto → stablecoin does not automatically mean “no taxable event.”
Using Crypto to Buy Something Can Trigger CGT
Suppose you originally bought 0.1 Bitcoin for:
£2,000
Later it is worth:
£3,500
Instead of selling it, you use the 0.1 BTC to buy a computer worth £3,500.
For tax purposes, you have disposed of the Bitcoin.
Simplified gain:
£3,500 − £2,000 = £1,500
That gain forms part of your overall Capital Gains Tax calculation for the tax year.
HMRC expressly includes using cryptoassets to pay for goods or services within the meaning of a disposal. (GOV.UK)
Moving Crypto Between Your Own Wallets Is Different
Moving Bitcoin from Coinbase to your own hardware wallet does not normally create a disposal if you remain the beneficial owner throughout.
Similarly, moving crypto between two wallets that you personally control does not normally create a gain simply because the blockchain records a transfer.
HMRC says there is no disposal where the person retains beneficial ownership throughout the transaction. (GOV.UK)
However, transaction fees need separate attention.
If network or transaction fees are themselves paid using crypto tokens, HMRC's analysis can treat the tokens used to pay the fee as a separate disposal in their own right. (GOV.UK)
So:
wallet transfer ≠ necessarily taxable disposal
but:
crypto used to pay the transfer fee = potentially separate disposal
How Much Capital Gains Tax Do You Pay in 2026/27?
For 2026/27, the individual Capital Gains Tax Annual Exempt Amount remains:
£3,000.
For ordinary crypto gains, the current CGT rates are:
18% to the extent gains fall within the available basic-rate band;
24% above that level. (GOV.UK)
The £3,000 is not an exemption for the amount of crypto you sell.
It is an exemption against your net taxable capital gains.
That distinction is critical.
You could sell £100,000 of Bitcoin and have a gain of only £2,000.
Or you could sell £10,000 of crypto that originally cost £1,000 and have a gain approaching £9,000.
Tax is based on the gain, not simply the amount withdrawn.
Example: £9,800 Crypto Gain
Suppose you dispose of crypto for:
£18,000
Its allowable pooled acquisition cost is:
£8,000
and you have:
£200 allowable disposal fees.
Your gain would be approximately:
£18,000 − £8,000 − £200 = £9,800
Assuming you have no other capital gains or losses:
Gain: £9,800
less 2026/27 Annual Exempt Amount:
£3,000
Taxable gain:
£6,800
If the entire taxable gain falls within the 24% CGT rate:
£6,800 × 24% = £1,632 CGT
The actual calculation can change where the individual has other taxable income, gains or allowable losses because part of a gain may potentially fall at 18% and the remainder at 24%. The 2026/27 CGT rates and £3,000 exemption are confirmed in the government's current rates and allowances. (GOV.UK)
Your Salary Can Affect the Crypto CGT Rate
Capital Gains Tax does not operate completely independently from your other income.
Suppose, after allowances, your taxable income is:
£30,000
The ordinary basic-rate band is £37,700 for 2026/27, leaving:
£7,700
of unused basic-rate band. (GOV.UK)
If your taxable crypto gains after the Annual Exempt Amount are £10,000, a simplified calculation could therefore place:
£7,700 at 18% = £1,386
and
£2,300 at 24% = £552
Total:
£1,938 CGT
The precise calculation depends on the individual's complete taxable income and gains.
HMRC Does Not Simply Use “First In, First Out”
Another major area of confusion is calculating the original cost of cryptocurrency.
If you bought Bitcoin ten different times at ten different prices, you do not normally choose whichever purchase gives you the lowest taxable gain.
Cryptoassets of the same type are generally grouped into a Section 104 pool.
HMRC applies broadly the following matching order:
same-day acquisitions;
then certain acquisitions of the same cryptoasset made during the following 30 days;
then the Section 104 pool. (GOV.UK)
This is similar to the share-matching rules.
Example: How Crypto Pooling Works
Suppose you buy:
100 Token X for £200
and later:
300 Token X for £300
You now own:
400 Token X
with a total pooled allowable cost of:
£500
Average pooled cost:
£500 ÷ 400 = £1.25 per token
If you later dispose of 200 Token X, ignoring same-day and 30-day matching:
Allowable pooled cost:
200 × £1.25 = £250
You compare the proceeds from those 200 tokens against £250 to calculate the gain or loss.
HMRC uses essentially this same example in its crypto guidance. (GOV.UK)
Each Cryptocurrency Normally Has Its Own Pool
Bitcoin does not go into the same pool as Ethereum.
Ethereum does not go into the same pool as Solana.
HMRC requires a separate pool for each type of fungible token.
For example:
Bitcoin pool
Ethereum pool
XRP pool
Solana pool
each have their own quantities and pooled allowable costs. (GOV.UK)
This is one reason calculating crypto gains from several years of trading can become complicated very quickly.
NFTs Are Different
Non-Fungible Tokens are, by definition, individually identifiable.
HMRC's crypto manual states that NFTs are therefore not normally pooled under the Section 104 crypto pooling method and the same matching rules do not apply in the same way. (GOV.UK)
An NFT disposal still needs a tax analysis, but it should not simply be placed in the same pool as fungible cryptocurrencies.
The Same-Day and 30-Day Rules Matter
Suppose you sell Bitcoin at a gain and immediately buy Bitcoin again.
You cannot automatically assume that the repurchased Bitcoin simply enters your historic Section 104 pool.
The same-day rule is applied first.
Where crypto of the same type is bought within the next 30 days after a disposal, the 30-day matching rule can then apply before the Section 104 pool. (GOV.UK)
This is designed, among other things, to prevent straightforward “bed and breakfasting” of assets solely by selling and immediately repurchasing them.
Someone making dozens or hundreds of trades should therefore not calculate tax simply using:
total deposits − total withdrawals.
That approach can give a completely incorrect result.
What Costs Can You Deduct From Crypto Gains?
Allowable costs can potentially include:
the acquisition cost of the cryptoassets;
certain transaction fees;
advertising costs relating to finding a buyer or seller;
contract costs relating to the transaction;
valuation costs incurred to determine the gain;
and the appropriate proportion of pooled token costs. (GOV.UK)
However, you cannot deduct a cost twice.
For example, an expense already deducted for Income Tax purposes cannot then also be used to reduce the Capital Gain.
HMRC also specifically says mining equipment and electricity costs are not simply deductible as CGT acquisition costs for the tokens. (GOV.UK)
All Crypto Calculations Must Ultimately Be in Pounds Sterling
Your exchange may show:
BTC/USD;
ETH/USDT;
SOL/USDC;
or another crypto pair.
HMRC does not accept:
“There was no GBP value, so I could not calculate tax.”
For Self Assessment, transactions must be valued in pounds sterling.
Where a transaction does not have a direct GBP value—for example Bitcoin exchanged directly for Ether—an appropriate sterling valuation needs to be established using a reasonable and consistent methodology. HMRC also expects the valuation methodology to be retained with the taxpayer's records. (GOV.UK)
When Does Crypto Become Income Instead of a Capital Gain?
This is the second major side of crypto taxation.
Crypto you receive can sometimes be taxable as income.
HMRC identifies crypto received from activities including:
mining;
staking;
lending;
liquidity pool arrangements;
DeFi activities;
and
employment
as potentially subject to Income Tax. (GOV.UK)
The important point is that you can potentially face:
Income Tax when the crypto is received
and then later:
Capital Gains Tax on any subsequent increase in value.
This is not necessarily double taxation of the same amount because the value already subjected to Income Tax effectively becomes relevant to the later CGT calculation. HMRC confirms that where Income Tax was paid on tokens when received, CGT generally applies only to the subsequent gain in value. (GOV.UK)
Example: Staking Reward
Suppose you receive staking rewards worth:
£2,000
at the time they are received.
If the activity is not a trade, HMRC generally treats the reward as taxable miscellaneous income. (GOV.UK)
Suppose you later sell those tokens for:
£3,000.
Simplified position:
Income initially received:
£2,000
Potential subsequent capital gain:
£3,000 − £2,000 = £1,000
subject to pooling, allowable costs and the wider CGT calculation.
You should not treat the entire £3,000 as a capital gain where £2,000 was already taxable as income.
The £1,000 Trading and Miscellaneous Income Allowance
For non-trading crypto income such as certain staking, mining, lending or DeFi receipts, the £1,000 Trading and Miscellaneous Income Allowance can potentially be relevant.
HMRC says that crypto miscellaneous income counts towards this £1,000 allowance.
If your total miscellaneous income from all sources is:
between £1,000 and £2,500, HMRC says you should contact them;
over £2,500, HMRC says you should register for Self Assessment if required. (GOV.UK)
Importantly, this is not a separate £1,000 allowance just for crypto.
It forms part of the wider trading and miscellaneous-income rules.
Mining
Mining rewards can be taxable when received.
Whether the mining activity constitutes a trade depends on the facts, including factors such as the degree of activity, organisation, risk and commerciality.
Where it does not amount to a trade, HMRC generally treats the sterling value of mining rewards as miscellaneous income.
Where there is a genuine trade, trading-income rules apply instead. (GOV.UK)
If the mined crypto is subsequently retained and later sold at a higher value, a later CGT calculation can also arise.
Staking
The same broad principle can apply to staking.
A person receiving tokens through staking may have taxable income based on the GBP value of the tokens when received.
If those tokens are subsequently sold, exchanged or spent, Capital Gains Tax may then arise on the change in value after acquisition. (GOV.UK)
Staking arrangements can nevertheless vary considerably, particularly in DeFi, so the legal and beneficial ownership of tokens and the nature of the return can affect the precise treatment.
Airdrops
Not every airdrop is automatically taxable income.
HMRC says Income Tax may not apply where an airdrop is received:
without the recipient doing anything in return;
and
where it is not part of a trade or business involving the relevant crypto activity.
However, where an airdrop is received in return for—or in expectation of—a service, it may be subject to Income Tax as miscellaneous income or trading income. (GOV.UK)
Even where no Income Tax is due when the airdrop is received, disposing of the airdropped tokens later can still create a Capital Gains Tax liability. (GOV.UK)
Being Paid in Crypto by an Employer
Getting your salary in Bitcoin does not make the salary tax-free.
Crypto received from employment counts as employment income.
HMRC treats the value received as “money's worth”, potentially subject to Income Tax and National Insurance. Exchange tokens such as Bitcoin are normally regarded as readily convertible assets, meaning a UK employer will generally need to deal with PAYE and National Insurance obligations. (GOV.UK)
If the employee retains the crypto and its value later rises, a subsequent disposal can then produce a Capital Gain.
DeFi, Lending and Liquidity Pools: One of the Most Complex Areas
DeFi taxation is significantly more complicated than simply buying Bitcoin and later selling it.
Under the current approach, it can be necessary to determine whether transferring tokens into a lending or liquidity arrangement transfers beneficial ownership.
Where beneficial ownership is transferred, the existing HMRC interpretation can treat that transfer itself as a disposal for CGT purposes. (GOV.UK)
The return received from a DeFi arrangement can also need to be classified as income or capital depending on its nature and how the arrangement is structured. (GOV.UK)
This means two DeFi arrangements that look similar on an app can potentially have different tax consequences because the underlying contractual rights are different.
A Major DeFi Change Is Planned for April 2027
This is one of the newest developments in UK crypto taxation.
On 13 July 2026, HMRC published draft legislation proposing a new treatment for certain cryptoasset lending, borrowing and automated market-making arrangements.
The planned measure is intended to treat specified transactions on a no gain, no loss basis, effectively deferring Capital Gains Tax until there is a genuine economic disposal rather than triggering CGT merely because tokens enter or leave certain qualifying arrangements.
The published operative date is 6 April 2027. (GOV.UK)
Because this is a newly published measure with draft legislation as of August 2026, investors should not simply apply the proposed 2027 treatment to transactions taking place under the current 2026/27 rules.
Gifts of Cryptocurrency
Giving crypto away can create CGT.
If you give crypto to a friend, child, sibling or another person, the CGT calculation will normally use market value, even if that person paid you nothing. (GOV.UK)
Example
You bought Bitcoin for:
£5,000
It is now worth:
£15,000
You gift it to your adult child.
You received no money.
But for CGT purposes you can still be treated broadly as disposing of the asset for:
£15,000 market value
potentially creating:
£10,000 gain
before allowable costs, losses and the Annual Exempt Amount.
Transfers Between Spouses and Civil Partners
Different rules generally apply to transfers between spouses and civil partners who meet the relevant conditions.
Such transfers are normally made on a no gain/no loss basis, meaning no immediate CGT is triggered.
However, the spouse receiving the crypto effectively inherits the historic tax cost for future CGT purposes; the gain does not simply disappear permanently. (GOV.UK)
This can make spouse ownership relevant to legitimate family tax planning, particularly where one spouse has unused capital losses, Annual Exempt Amount or basic-rate band, but the actual beneficial ownership of the crypto must genuinely change.
What if Your Crypto Makes a Loss?
Losses matter just as much as gains.
Suppose you make:
£15,000 gain on Bitcoin
but:
£8,000 allowable loss on Ethereum.
Before considering the Annual Exempt Amount, your net capital gain could broadly be:
£15,000 − £8,000 = £7,000
You can then consider the available CGT exemption.
Allowable capital losses should be reported to HMRC so they can be used.
Unused reported capital losses can generally be carried forward and used against later gains. HMRC allows capital losses to be claimed up to four years after the end of the tax year in which the disposal occurred. (GOV.UK)
A Falling Portfolio Is Not Automatically a Tax Loss
Suppose you bought crypto for:
£50,000
and it is now worth:
£15,000.
You have lost £35,000 economically.
But if you still own the crypto, you have not necessarily created an allowable CGT loss.
Capital losses normally need an actual disposal or another event recognised for tax purposes.
This distinction is particularly important after market crashes.
Unrealised loss ≠ automatically an allowable tax loss.
What if a Token Becomes Worthless?
A negligible value claim may potentially allow a loss to be crystallised where cryptoassets have become worthless or of negligible value even though you technically still own them.
Because fungible cryptoassets are pooled, HMRC says a negligible value claim generally needs to relate to the whole relevant Section 104 pool rather than simply selected tokens from within that pool. (GOV.UK)
The claim needs to identify the asset, the deemed disposal value and the relevant date.
This can be particularly important following the collapse of a token project.
What if You Lose Your Private Key?
Losing the password or private key to a wallet is not automatically a disposal.
The tokens still exist on the blockchain even though you can no longer access them.
HMRC therefore says merely losing the private key does not itself create a CGT loss. (GOV.UK)
However, where it can be demonstrated that there is no realistic prospect of recovering the key or accessing the tokens, it may be possible to make a negligible value claim.
What if Your Crypto Is Stolen or You Are Scammed?
This is another uncomfortable area.
HMRC does not normally regard theft itself as a disposal because the victim may legally retain ownership and a right to recover the asset.
Therefore:
“£20,000 of crypto was stolen”
does not automatically mean:
“I have a £20,000 allowable capital loss.” (GOV.UK)
Where someone actually acquired tokens that later became worthless, a negligible value claim might potentially be relevant.
However, where someone paid money to a fraudster but never acquired any cryptoasset at all, there may be no chargeable asset on which to claim a normal capital loss.
These cases should be reviewed individually.
What Happens After a Blockchain Hard Fork?
A hard fork can create new cryptoassets.
HMRC's approach is that the allowable costs associated with the original tokens are normally apportioned on a just and reasonable basis between the original cryptoasset pool and the new cryptoasset pool.
The newly created tokens then normally enter their own Section 104 pool. (GOV.UK)
This is another example of why crypto records cannot be reconstructed simply by looking at bank withdrawals.
How Do You Declare Crypto on Self Assessment?
This has become clearer recently.
HMRC now includes a dedicated cryptoasset section in Self Assessment returns for the 2024/25 tax year onwards.
Where you report crypto capital gains through Self Assessment, the figures must be entered in pounds sterling. (GOV.UK)
Depending on the activity, crypto can therefore appear in different parts of the tax calculation:
capital disposals → crypto/Capital Gains information;
miscellaneous crypto income → relevant Income Tax section;
genuine crypto trading → self-employment/trading income;
employment crypto → employment/PAYE treatment.
The correct section depends on why the crypto was received or disposed of, not simply the fact that cryptocurrency was involved.
When Must Crypto Capital Gains Be Reported?
If your total taxable gains exceed your Capital Gains Tax Annual Exempt Amount, you need to report the gains and pay any CGT due.
For 2026/27, the individual Annual Exempt Amount is £3,000. (GOV.UK)
There is another rule that many taxpayers miss.
If you are already within Self Assessment and your total disposal proceeds from chargeable assets exceed £50,000, you can be required to report the disposals even where your gains are below the £3,000 exemption. (GOV.UK)
Therefore:
“My gain was under £3,000, so I never need to mention crypto”
is not always correct.
Example: £100,000 of Crypto Sales but Only £2,000 Gain
Suppose you are already required to complete Self Assessment.
During the tax year you sell several cryptoassets for combined proceeds of:
£100,000
but after pooling and allowable costs your total gain is only:
£2,000.
That gain may be below the £3,000 Annual Exempt Amount, meaning no CGT is due.
However, because total chargeable disposal proceeds exceed £50,000, the Self Assessment reporting requirement can still apply. (GOV.UK)
This distinction between:
tax payable
and
reporting required
is important.
Current Self Assessment Deadlines
We are currently dealing with the 2025/26 Self Assessment filing cycle.
For the tax year ending 5 April 2026:
5 October 2026 — normally tell HMRC if you newly need Self Assessment;
31 October 2026 — paper return deadline;
31 January 2027 — online return deadline;
31 January 2027 — tax payment deadline. (GOV.UK)
Crypto disposals occurring during the current 2026/27 tax year, from 6 April 2026 to 5 April 2027, would normally form part of the return due after that tax year ends.
You Can Also Use the Real-Time CGT Service
For qualifying non-property capital gains, HMRC also operates a real-time Capital Gains Tax reporting service.
However, if you are already registered for Self Assessment, HMRC states that the disposal still needs to be included in your Self Assessment return as well. (GOV.UK)
For most clients already completing Self Assessment, reporting the complete crypto position through the annual return is therefore normally the clearest route.
HMRC's New Cryptoasset Reporting Framework — CARF
This is one of the most significant changes crypto investors should understand in 2026.
The UK Cryptoasset Reporting Framework began on:
1 January 2026.
Cryptoasset service providers within the rules now have due-diligence, record-keeping and reporting responsibilities.
The first reporting period runs:
1 January 2026 → 31 December 2026
with reports due:
by 31 May 2027. (GOV.UK)
Service providers can be required to collect identifying information including users' tax residence and tax identification information so that crypto activity can be linked to tax records. (GOV.UK)
This does not eliminate the taxpayer's responsibility to calculate tax correctly.
It means HMRC will have increasingly structured third-party data with which declarations can be compared.
“But My Crypto Is on a Foreign Exchange”
Using an overseas exchange does not automatically make gains tax-free for someone who is subject to UK tax.
UK tax treatment depends on matters such as residence, the nature of the activity and the relevant tax rules—not simply where the exchange's website is headquartered.
CARF is also an international information-sharing framework rather than merely a domestic UK-exchange initiative. UK service providers report users who are tax resident in the UK or other participating CARF jurisdictions, and participating jurisdictions can exchange relevant information under the framework. (GOV.UK)
Cross-border crypto arrangements can become particularly complex and may require specialist tax analysis.
Your Exchange Statement Is Not Your Tax Calculation
Coinbase, Binance, Kraken or another platform may provide a transaction report.
That report can be extremely useful.
But HMRC expressly warns that exchange reports:
are not themselves tax calculations
and
may not track your pooled allowable costs. (GOV.UK)
This is particularly important where you:
use multiple exchanges;
move crypto between wallets;
trade the same asset on several platforms;
use DeFi;
receive staking rewards;
or bought crypto several years ago.
For tax purposes, your Bitcoin holdings are not necessarily separate just because some are on Exchange A and others on Exchange B.
The taxpayer's overall beneficial ownership needs to be considered.
What Crypto Records Should You Keep?
HMRC places responsibility on the taxpayer to maintain their own crypto records.
Relevant records can include:
type of cryptoasset;
transaction dates;
units bought, received or disposed of;
GBP value at each tax point;
wallet addresses;
bank statements;
exchange records;
balances;
and pooled allowable costs. (GOV.UK)
You should also preserve the methodology used to convert non-GBP transactions into pounds sterling. (GOV.UK)
Do not assume an exchange will retain your transaction history forever.
HMRC specifically notes that exchanges can disappear or retain records only for limited periods. (GOV.UK)
A Practical Example: Investor With Buying, Swapping and Staking
Suppose Andrei does the following:
May 2026
Buys Ethereum for:
£5,000
September 2026
His Ethereum is worth:
£8,000
He exchanges all of it for Bitcoin.
This creates a disposal of Ethereum.
Simplified gain:
£8,000 − £5,000 = £3,000
before fees and detailed pooling rules.
The Bitcoin acquired has a corresponding acquisition value for future calculations.
November 2026
He receives staking rewards worth:
£1,500.
Assuming this is non-trading miscellaneous income, that £1,500 may create an Income Tax reporting issue, taking account of the £1,000 Trading and Miscellaneous Income Allowance and any other miscellaneous income. (GOV.UK)
February 2027
He sells the staking tokens for:
£2,200.
Because £1,500 was the value already brought into Income Tax when received, the subsequent increase may create a simplified capital gain of approximately:
£700
subject to the normal pooling and CGT rules. (GOV.UK)
Andrei therefore potentially has both Income Tax and Capital Gains Tax calculations in the same tax year, arising from different crypto activities.
That is completely normal under the current system.
Common Crypto Tax Mistakes
The most dangerous misconceptions are usually very simple:
“I did not withdraw to my bank, so there is no tax.”
Wrong. Crypto-to-crypto exchanges can be disposals.
“USDT is basically dollars, so BTC → USDT is not taxable.”
A swap into another cryptoasset can still be a disposal.
“I made 500 trades but ended the year with the same amount of money, so there is nothing to declare.”
Each disposal needs to be considered under the matching and pooling rules.
“My exchange calculated my profit, so HMRC will accept it.”
Exchange reports do not necessarily calculate UK pooled costs correctly.
“My portfolio fell £30,000, so I automatically have a £30,000 tax loss.”
A fall in market value while assets are still held is not automatically a realised allowable loss.
“I lost my wallet password, so I can claim the whole investment immediately.”
Losing a private key is not itself a disposal, although a negligible value claim might be possible in appropriate circumstances.
“HMRC cannot see crypto.”
That assumption is increasingly dangerous following the introduction of CARF from January 2026. (GOV.UK)
What if You Forgot to Declare Crypto in Previous Years?
Do not assume that because the filing deadline passed, nothing can now be done.
HMRC has a dedicated Cryptoasset Disclosure Service for people who need to disclose previously unpaid tax relating to cryptoassets. HMRC also points taxpayers to this service directly from its current crypto CGT guidance. (GOV.UK)
The correct treatment depends on:
the years involved;
whether the error was careless or deliberate;
Income Tax versus CGT;
the amount owed;
previous returns;
and whether HMRC has already contacted the taxpayer.
Where undeclared amounts are significant, dealing with the position voluntarily before HMRC opens an enquiry can be very important.
What if the Crypto Is Owned by an LTD?
The rules above focus mainly on individuals and Self Assessment.
If a Limited Company owns the crypto, the tax treatment is different.
A company can potentially be within:
Corporation Tax on trading profits;
Corporation Tax on chargeable gains;
and other tax rules depending on what the company actually does with the cryptoassets.
HMRC confirms that businesses and companies engaged in crypto activities can fall within Corporation Tax, Corporation Tax on chargeable gains, Income Tax, NIC, VAT and other taxes depending on their circumstances. (GOV.UK)
A director should therefore not report company-owned cryptocurrency as though it were personally owned crypto on their individual Self Assessment.
The legal and beneficial owner matters.
Crypto Tax Checklist Before Completing Self Assessment
Before submitting a return containing cryptocurrency, make sure you have identified:
-
every crypto purchase;
-
every sale for GBP or other fiat currency;
-
every crypto-to-crypto swap;
-
every transaction where crypto was spent;
-
gifts or transfers to other people;
-
transfers between your own wallets;
-
staking, mining, lending and DeFi income;
-
airdrops;
-
NFTs;
-
transaction and network fees;
-
Section 104 pools for each cryptoasset;
-
same-day and 30-day transactions;
-
carried-forward capital losses;
-
potentially worthless tokens;
-
GBP valuations at every relevant tax point;
-
your total disposal proceeds;
-
your total gains and losses;
-
whether the £50,000 Self Assessment disposal-proceeds reporting threshold is relevant;
-
whether Income Tax as well as CGT applies;
-
whether older undeclared years need correction.
The key is to calculate from the transaction history, not from the difference between money deposited into and withdrawn from the exchange.
Final Verdict: When Do You Pay Crypto Tax in the UK?
For most individual investors, the basic framework is:
Buying and holding
Normally no immediate CGT simply because the value rises.
Selling
Potential Capital Gains Tax.
Swapping one crypto for another
Potential Capital Gains Tax.
Spending crypto
Potential Capital Gains Tax.
Giving crypto to someone other than a qualifying spouse/civil partner or charity
Potential Capital Gains Tax using market-value rules.
Staking, mining, lending and certain DeFi returns
Potential Income Tax when received, followed by possible CGT on later appreciation.
Employment paid in crypto
Potential Income Tax and National Insurance.
Investment losses
Potential capital losses—but they generally need to be properly realised or claimed and notified to HMRC.
2026/27 Capital Gains Tax
Annual Exempt Amount: £3,000
CGT rates on ordinary crypto gains: 18% / 24% depending on the individual's wider taxable income and gains. (GOV.UK)
The Biggest Change in 2026
The underlying principle that crypto is taxable is not new.
What is particularly important now is HMRC's visibility.
Since 1 January 2026, the UK Cryptoasset Reporting Framework requires relevant service providers to collect user and transaction information. The first reports covering 2026 are due to HMRC by 31 May 2027. (GOV.UK)
HMRC has also added a dedicated cryptoasset section to Self Assessment returns from 2024/25 onwards. (GOV.UK)
The direction is clear:
crypto is becoming increasingly integrated into ordinary tax reporting and third-party information matching.
The Golden Rule
Do not calculate UK crypto tax by looking only at how much money entered or left your bank account.
Your taxable events can occur while the money remains entirely inside the crypto ecosystem.
You need to understand:
what you bought;
what you sold;
what you exchanged;
what you received as income;
your sterling values;
your pooled costs;
and your realised gains and losses.
That is the difference between a correct Self Assessment and a return that can look completely different from the underlying blockchain activity.
How DCTaxAgent Can Help
DCTaxAgent can assist individuals with the tax and Self Assessment side of cryptocurrency activity, including:
crypto Capital Gains Tax calculations;
Bitcoin and Ethereum disposals;
crypto-to-crypto transactions;
Section 104 pooling;
same-day and 30-day matching rules;
staking and mining income;
airdrop taxation;
capital losses;
Self Assessment reporting;
historic undeclared crypto income or gains;
and combining crypto calculations with employment, self-employment, property and other personal income.
Where crypto activity involves complex DeFi arrangements, companies, trusts, non-UK residence or unusually large transactions, additional specialist tax or legal analysis may be required.
WhatsApp: 07587 532646
Website: www.dctaxagent.co.uk
Disclaimer
This article is intended for general informational and educational purposes only.
It does not constitute personalised tax, legal, investment or financial advice.
Cryptoasset taxation depends on the exact transactions, beneficial ownership, tax residence, acquisition history, type of cryptoasset, source of tokens, contractual terms of DeFi arrangements, losses, other income and individual circumstances.
The article reflects HMRC and UK government guidance available as at 14 August 2026.
Of particular relevance for 2026/27:
Capital Gains Tax Annual Exempt Amount: £3,000
ordinary CGT rates: 18% / 24%
CARF data collection commenced: 1 January 2026
first CARF reports covering calendar year 2026: due by 31 May 2027
and HMRC published draft legislation in July 2026 proposing new CGT treatment for certain cryptoasset lending and liquidity-pool arrangements from 6 April 2027. (GOV.UK)