Cryptocurrency what is a sale gain or income
The cryptocurrency market continues to grow in the UK, with more individuals and businesses exploring digital assets as part of their investment portfolios. However, the tax treatment of cryptocurrency transactions remains confusing for many. One of the most common questions we hear at Severn Accounting is whether selling cryptocurrency triggers a capital gain or income tax liability. The answer isn’t always straightforward, and getting it wrong could result in an unexpected tax bill or, worse, a compliance issue with HMRC. Let’s break down the rules.
How HMRC Treats Cryptocurrency Sales
HMRC classifies cryptocurrency as an asset for tax purposes, not as currency itself. This distinction is crucial. When you dispose of cryptocurrency—whether by selling it for pounds sterling, exchanging it for another cryptocurrency, or even using it to purchase goods or services—you may trigger a capital gains tax (CGT) liability.
The key principle is that if you’ve made a profit on the disposal, that profit is generally subject to capital gains tax at rates of either 10% or 20%, depending on your income tax band (as of the 2024/25 tax year). For the 2024/25 tax year, basic rate taxpayers benefit from a 10% CGT rate on gains above the annual exemption, whilst higher rate taxpayers face 20%.
You’ll also benefit from the annual CGT exemption of £3,000 for the 2024/25 tax year. This means your first £3,000 of gains across all assets (not just crypto) are tax-free.
When It’s Treated as Income Instead
Whilst most cryptocurrency disposals are treated as capital gains, there are scenarios where HMRC treats the proceeds as income instead. This distinction matters significantly, as income tax rates (up to 45% for additional rate taxpayers) are considerably higher than CGT rates.
HMRC will treat cryptocurrency gains as income if you’re carrying on a trade in cryptocurrency. This means you’re buying and selling regularly with the intention of making a profit, rather than simply investing. Factors HMRC considers include the frequency of transactions, the time span over which you hold assets, and whether you’re relying on market movements for profit rather than longer-term appreciation.
If you’re mining cryptocurrency or receiving it as payment for goods or services, this is also treated as income at the point of receipt. The value of the cryptocurrency at the time you receive it forms part of your taxable income, and any subsequent gain when you sell is a capital gain.
Reporting Cryptocurrency to HMRC
Self-assessment is the primary route for reporting cryptocurrency gains. If you’re within Self Assessment (which you are if you’re self-employed, a company director, or have income above £1,000 from sources other than employment), you must declare all cryptocurrency transactions.
On your tax return, you’ll report capital gains in the capital gains section. Keep meticulous records of:
- Date of acquisition and disposal
- Cost basis (what you paid, including fees)
- Proceeds from disposal
- Any gains or losses calculated
HMRC has made it clear they’re increasing compliance checks on cryptocurrency transactions. They’re reviewing transaction patterns and cross-referencing with exchange data, so accuracy and completeness are essential.
For Companies
If your company holds cryptocurrency, the position is similar but with different rates. Corporation tax applies to gains at 25% (for profits over £250,000 from April 2023), or 19% for smaller companies. The same annual exemption doesn’t apply to companies—all gains are chargeable—but you may be able to offset losses from previous years.
Companies must record crypto holdings on their balance sheet at fair value and account for any gains or losses through their accounts, affecting both the tax computation and statutory accounts.
Common Pitfalls to Avoid
Don’t assume all cryptocurrency disposals are capital gains. Don’t ignore small transactions—HMRC has sophisticated tracking capabilities. And don’t forget that exchanging one cryptocurrency for another is a taxable disposal event, even though you haven’t converted to fiat currency.
Get It Right from the Start
The cryptocurrency tax landscape is complex, and mistakes can be costly. Whether you’re a casual investor, an active trader, or a company holding digital assets, understanding your obligations is crucial for compliance and tax efficiency.
For tailored advice on your specific situation, contact Severn Accounting — we’re here to help.