How to Report Cryptocurrency on Your Tax Return in the UK?

You may think cryptocurrency is entirely detached from traditional finance, but it’s not. HM Revenue and Customs (HMRC) views cryptocurrency as a taxable asset. In the UK, there has been an increase in the number of individuals investing in Cryptocurrencies. At the same time, there has been an increase in tax complications. You must understand how to report cryptocurrency on your UK Tax return to remain compliant with the UK tax regulations.

This guide explains how you can report your cryptocurrency on your UK Tax return, which transactions are taxable, what records you need, and the steps to complete your Self Assessment correctly.

Is Crypto Taxable in the UK?

Many people wonder whether crypto is taxable in the UK. The answer is yes. You have to pay crypto taxes in the UK if your profits or crypto income are more than your tax-free allowances. Generally, HMRC does not treat cryptocurrency as money or gambling for tax purposes. Instead, it treats cryptoassets as property assets. This means that you either pay Capital Gains Tax (CGT) when disposing of crypto or Income Tax on certain crypto income.

Do I Have to Report Crypto to HMRC?

Before explaining the steps on how to report cryptocurrency on your UK Tax return, you need to learn why you have to report a crypto tax return in the UK. HMRC requires you to report taxable cryptocurrency transactions. The Cryptoasset Reporting Framework (CARF) will make it easier for HMRC to receive information from crypto service providers, helping enforce existing tax rules.

Certain reporting cryptoasset service providers will be required to report customer information to HMRC under CARF. If you trade or mine crypto, staying compliant is non-negotiable.

The reporting rules apply to reporting cryptoasset service providers (RCASPs) and require them to disclose certain user and transaction data to HMRC.

Note: The reporting rules began for transactions from 1 January 2026, with reports submitted to HMRC in 2027.

When Do You Pay Tax on Cryptocurrency?

To understand how to report cryptocurrency on your UK Tax return, it is important to know the taxable events. The following are the common taxable transactions where you have to pay tax:

Selling Cryptocurrency

Selling cryptocurrency such as Ethereum, Bitcoin, or other digital assets for GBP may result in a capital gain or loss.

Spending Cryptocurrency

If you are using crypto to purchase products or services, it is also considered a disposal for tax purposes.

Swapping Cryptocurrencies

Exchanging Bitcoin for Ethereum or another token is treated as a disposal. Also, this may create a taxable gain.

Staking Rewards

Receiving rewards from staking is another taxable event as income based on their market value when received.

Mining Income

Crypto earned through mining is generally treated as income, depending on whether mining amounts to a trade. This may also become subject to CGT when later sold.

How to Report Cryptocurrency on Your UK Tax Return?

Now that you have understood when you have to pay tax on cryptocurrency, let’s explain how to report cryptocurrency on your UK tax return step by step:

Gather Your Transaction History

The very first step to report cryptocurrency is to download reports from all cryptocurrency exchanges and wallets you have used during the tax year.

Calculate Gains and Income

Separate capital gains from taxable income. Simply, separate transactions into capital gains, income from mining, staking rewards, and employment income (if applicable).

Most crypto users trigger a disposal and CGT event whenever they sell crypto for fiat currency, swap one cryptocurrency for another, or use crypto to pay for goods or services.

Moreover, if you earn crypto as a reward, it is treated as income based on its fair market value when you receive it. This may include staking rewards, mining rewards, salary, and freelance payments made in cryptocurrency.

Complete Your Self Assessment

One of the most important steps in how to report cryptocurrency on your UK tax return is completing your Self Assessment. To complete your self-assessment, start with the Form SA100.

You must report any taxable crypto income as part of your Self Assessment. And, if you have allowable expenses directly related to earning that income, deduct those expenses. Complete the Capital Gains section (SA108) if you have chargeable crypto disposals. This gives you the supplementary pages you need, like SA108.

Complete the Form SA108

The next step in how to report cryptocurrency on your UK tax return is completing the Form SA108. It is the supplementary schedule specifically for capital gains.

Use the SA108 Form to report your taxable crypto disposals and calculate your capital gains or losses. You need to apply HMRC’s pooling rules when calculating gains and claim any allowable capital losses. The HMRC pooling rules are:

Same Day Rule

If you buy and sell the same crypto on the same day, HMRC matches all purchases and sales of that coin on that day.

30-Day Rule

If you sell your coin and then buy the same coin within 30 days, HMRC matches your sale to those new purchases first.

Section 104 Rules

If none of the above rules applies, HMRC uses your average purchase cost from all your existing holdings.

Submit Before the Deadline

The last step but not least is to track the deadlines. Submit your self-assessment by 31 October for paper, and 31 January for online.

Can I Claim Crypto Losses?

When learning the steps of how to report cryptocurrency on your UK tax return, it is important to understand whether you can claim losses.

You can claim crypto losses on disposals of cryptocurrency. However, the losses must arise from capital disposals or allowable trading activity under HMRC rules. These losses can generally be used to reduce the capital gains in the same tax year or carried forward to future years.

Keep in mind that reporting losses can help reduce future CGT liabilities, making it an important part of how to report cryptocurrency on your UK tax return.

Who Needs to Report Cryptocurrency on Their UK Tax Return?

A person needs to report cryptocurrency if they have sold crypto for a profit, exchanged one cryptocurrency for another, used cryptocurrency to purchase goods or services, and received crypto through mining or staking.

Furthermore, if you have earned crypto as employment income or received crypto through airdrops in certain circumstances, you may need to report cryptocurrency on your tax return.

What Happens If I Fail to Report Cryptocurrency on My UK Tax Return?

Failing to report cryptocurrency on your tax returns can lead to hefty penalties from HMRC. It may charge you a penalty of up to £300 if you do not follow the rules. You could be charged a penalty if you do not report, if you submit your report late, or if your report is inaccurate, incomplete, or unverified.

How Much Crypto is Tax Free in the UK?

Knowing how much crypto is tax-free is a key part of learning how to report cryptocurrency on your UK tax return. No fixed amount of cryptocurrency is completely tax-free, but you get a yearly CGT allowance, which is currently £3,000. This means you can make up to £3,000 in crypto capital gains from selling or swapping crypto. The income tax allowance is separate from the CGT allowance.

So remember, this applies to profit, not the total amount of crypto you sell. Therefore, if your gains go over £3,000, only the extra amount is taxed. Moreover, income from staking or mining is taxed separately and not covered by this allowance.

Do I Have to Report Cryptocurrency If I Only Bought and Held it?

No, you do not need to report cryptocurrency if it is only bought and held with no disposal. Simply holding crypto, without selling, spending, gifting (except to a spouse) or swapping, does not create a taxable event. Therefore, you generally do not report it on a tax return. You need to report it when a disposal happens.

What are the Tips on How to Report Cryptocurrency on Your UK Tax Return?

Here are some key tips you should follow to report cryptocurrency on your tax return:

Organise your Records

Keep and maintain all your cryptocurrency transactions, including amounts, transaction types, dates, and values in GBP. To keep track of your transactions and simplify record-keeping, you can use digital tools and software.

Understand Taxable Events

Recognise taxable events such as selling crypto for fiat, trading between cryptocurrencies, and earning from staking or mining. You should also understand non-taxable events, such as buying crypto with fiat or transferring crypto between your wallets.

Calculate Gains and Losses

Calculate capital gains and losses using accurate methods and consider the cost basis and sale price. Deduct allowable expenses like transaction fees and costs associated with acquiring crypto.

Stay Informed

Stay informed about the latest HMRC guidelines and updates on cryptocurrency taxation and track important deadlines. Consult a tax expert if needed to ensure compliance and accuracy.

The Final Thought

Understanding how to report cryptocurrency transactions on your UK tax return is important to manage your digital assets responsibly. Whether you trade frequently or invest occasionally, you need to keep accurate records, identify taxable events, and complete your Self Assessment correctly. This can help you remain compliant with HMRC requirements.

In the UK, cryptocurrency taxation is evolving. You need to stay informed about current UK tax rules. Additionally, follow the guidance outlined above. It will help you complete your tax return accurately and minimise errors.

If you need a tax professional to minimise errors and avoid unnecessary HMRC penalties, check out our platform, AccountingFirms. We help you find qualified professionals who suit your business. With our amazing platform, you can search and find one in just a few minutes.

Disclaimer: The information provided on AccountingFirms.co.uk is for informational purposes only and should not be considered as financial advice. Always consult with a professional accountant to ensure compliance with UK laws and regulations.