Cryptoassets have moved firmly into the financial mainstream, with more people now holding Bitcoin, Ethereum and other digital assets alongside traditional investments.
However, there is still a common misconception that crypto transactions are anonymous or somehow sit outside the UK tax system.
They don’t.
HMRC expects taxpayers to declare taxable income and gains arising from cryptoassets. Failing to report them correctly could result in additional tax, interest and penalties and, in more serious cases, an HMRC investigation.
With HMRC gaining access to increasing amounts of information about cryptoasset transactions, it is becoming more important than ever to make sure your tax affairs are correct.
At A&C Chartered Accountants, we help individuals understand their UK tax obligations and make sure taxable crypto transactions are properly reported.
How are cryptoassets taxed in the UK?
There isn’t a completely separate tax system for cryptoassets in the UK. Instead, existing tax rules are applied depending on what you have done with the asset and the circumstances surrounding the transaction.
For most individuals who invest in cryptoassets, profits are likely to fall within the Capital Gains Tax (CGT) rules.
A disposal for Capital Gains Tax purposes can occur when you:
- Sell cryptoassets for cash.
- Exchange one cryptoasset for another.
- Use cryptoassets to pay for goods or services.
- Give cryptoassets away to someone other than your spouse or civil partner.
One of the areas that can catch investors out is exchanging one cryptoasset for another.
For example, if you exchange Bitcoin for Ethereum, this can be a disposal for Capital Gains Tax purposes. You don’t need to withdraw money into your bank account for a taxable event to have occurred.
What about staking and mining?
Not every crypto transaction is dealt with under Capital Gains Tax.
Some cryptoassets received through activities such as mining or staking may be subject to Income Tax.
Depending on the circumstances, this income may be treated as miscellaneous income rather than trading income. The exact tax treatment will depend on the nature and extent of your activities.
If you later dispose of cryptoassets that you received through mining or staking, there may also be Capital Gains Tax implications.
This is one reason why keeping accurate records from the outset is so important.
Does transferring crypto between wallets trigger tax?
Not necessarily.
If you simply move cryptoassets between wallets that you beneficially own, this would generally not constitute a disposal for Capital Gains Tax purposes.
However, other transactions involving cryptoassets can have tax consequences, so it is important to understand what each transaction represents rather than assuming that tax only becomes relevant when money reaches your bank account.
HMRC is receiving more information about cryptoassets
HMRC has been increasing its focus on cryptoasset tax compliance and has published extensive guidance explaining how existing UK tax rules apply.
The amount of information available to tax authorities is also increasing.
From the 2026 calendar year, new international cryptoasset reporting requirements mean that participating cryptoasset service providers will collect information about relevant users and transactions, with the first reports due to HMRC in 2027.
This makes it increasingly important for anyone who has bought, sold, exchanged or received cryptoassets to check whether they have UK tax reporting obligations.
Keep good records of your crypto transactions
Crypto investing can quickly result in hundreds or even thousands of individual transactions, particularly if you use several exchanges or wallets.
Good record-keeping is therefore essential.
You should retain information relating to your:
- Purchases and acquisition costs.
- Sales and other disposals.
- Crypto-to-crypto exchanges.
- Transfers between wallets.
- Transaction and exchange fees.
- Wallet addresses.
- Mining or staking rewards.
- Dates and values of transactions.
Don’t rely solely on an exchange to retain this information indefinitely. Ultimately, it is your responsibility to ensure that you have sufficient records to support the figures reported to HMRC.
What if you haven’t declared crypto to HMRC?
If you believe you should have reported crypto income or gains in a previous tax year but haven’t done so, it is important not to ignore it.
In many circumstances, making a voluntary disclosure and correcting an error before HMRC contacts you can result in a better outcome than waiting for HMRC to identify the issue.
The appropriate action will depend on your circumstances, including which tax years are affected and whether additional tax is due.
Need help with crypto tax?
Crypto tax can become complicated surprisingly quickly, particularly where there are multiple wallets, exchanges, staking rewards or frequent crypto-to-crypto transactions.
If you’re unsure whether you need to declare your cryptoassets, have gains or income that haven’t previously been reported, or simply want reassurance that you’re doing everything correctly, A&C Chartered Accountants can help.
We can review your circumstances, help establish what needs to be reported and make sure your UK tax position is dealt with correctly.