UK Capital Gains Tax on Cryptocurrency for Non-Residents

Cryptocurrency has created a new set of complications for the international tax community, and the UK's approach to taxing non-residents on crypto gains is an area where the law has struggled to keep pace with the technology. As of 2026, the general rule is that UK non-residents are not subject to UK Capital Gains Tax (CGT) on cryptocurrency disposals — but there are important caveats relating to where the asset is "situated" for tax purposes, the interaction with the non-dom regime, and the application of anti-avoidance rules including temporary non-residence.

The Basic CGT Position for Non-Residents

UK Capital Gains Tax applies to UK-resident individuals on gains from the disposal of any chargeable asset, wherever situated. For non-residents, the UK CGT charge was historically narrow. However, it has been progressively extended:

• From April 2015: non-residents became liable to UK CGT on disposals of UK residential property (Non-Resident Capital Gains Tax, NRCGT)
• From April 2019: the charge was extended to all UK land (residential and commercial) and to indirect interests in UK property-rich companies

Cryptocurrency is not UK land. There is no specific provision extending UK CGT to non-residents' gains on cryptocurrency. Therefore, as a matter of domestic law, a non-resident individual who disposes of cryptocurrency is generally not subject to UK CGT on that disposal.

This is a significant benefit for UK expats who hold cryptocurrencies and have established non-resident status. A gain that would attract 18%–24% CGT in the hands of a UK resident (at the capital gains rates applicable for 2026/27) may be entirely outside the UK charge for a non-resident.

However, the analysis does not end there.

The Situs of Cryptocurrency: A Live Legal Question

For UK CGT purposes, the rules that apply to non-residents partly depend on whether an asset is "situated" in the UK. This matters because:

1. The UK's CGT rules extending to non-residents focus specifically on UK-situated assets
2. Tax treaties also allocate taxing rights partly by reference to where an asset is situated
3. For inheritance tax and the former remittance basis, the situs of assets was critical to whether UK tax applied

HMRC's current view (set out in its Cryptoassets Manual, most recently updated in 2024) is that the location of a cryptocurrency asset is broadly determined by the residence of the beneficial owner. In practice, HMRC says that for many crypto assets, the situs follows the owner. If the owner is UK-resident, the crypto is UK-situated; if the owner is non-resident, the crypto is not UK-situated.

This is a pragmatic administrative position, but it is not definitively settled in law. Different analysis might apply depending on:

• The type of crypto asset (fungible tokens vs NFTs vs wrapped tokens)
• Whether the asset is held on a centralised exchange (which may have a UK operation) or in a self-custody wallet
• Whether there is a contract or other legal instrument underpinning the asset that is governed by UK law

Academic opinion and some foreign tax authorities take a different view. The UK does not yet have specific legislation pinning the situs of crypto assets beyond HMRC's guidance. If and when this is tested in court, the outcome is uncertain.

For practical purposes, most non-residents can rely on HMRC's current guidance and take the position that their crypto holdings are not UK-situated and therefore not subject to UK CGT. However, this should be treated as a practical approach rather than a legal certainty, and the position should be monitored as the law develops.

The Former Non-Dom Regime and Crypto

For individuals who were UK-resident but non-domiciled and used the remittance basis (prior to April 2025), the situation was more complex.

Under the remittance basis, gains from foreign assets (including overseas-situated crypto) were only taxed in the UK if remitted. If the crypto was treated as a foreign asset (i.e., not UK-situated), gains from disposal were not immediately taxable — they would only be charged when the proceeds were brought to the UK.

This created a specific issue: if you sold crypto while on the remittance basis and kept the proceeds offshore, was the gain "arising" in the year of disposal (but deferred under the remittance basis) or was it something else? HMRC's position was that gains from foreign assets under the remittance basis were treated as arising in the year of disposal but not immediately taxable unless remitted. The proceeds then became "foreign chargeable gains" and were subject to the mixed fund ordering rules on eventual remittance.

Following the abolition of the remittance basis from April 2025, new arrivals to the UK using the FIG regime are fully exempt from UK CGT on foreign gains (including crypto) for their first four years of UK residence, without any restriction on remittance. This is significantly simpler and more generous for those who qualify.

Temporary Non-Residence and Crypto Gains

The temporary non-residence (TNR) rules represent the most significant practical risk for UK expats with large unrealised crypto gains.

As noted in the separate guide on TNR, if you leave the UK and return within five complete tax years of non-residence, specified categories of income and gains realised during the non-resident period can be taxed in the year of return.

Critically, the TNR rules can apply to gains on assets held at the time of departure from the UK. Cryptocurrency held at departure — and disposed of during a short period of non-residence — may fall within the TNR charge on return. The gain would then be treated as arising in the year of return and taxed at UK CGT rates.

This is a real risk for expats who:

• Left the UK in the last few years with significant unrealised crypto gains
• Sold during their non-resident period at a profit
• Are now considering returning to the UK

If you are in this position, seek specialist advice before returning to the UK. The five-year rule must be calculated precisely (see the TNR guide), and the planning options should be assessed before crossing the threshold back into UK residence.

HMRC's Data Gathering on Crypto

A significant practical consideration is HMRC's increasing capacity to track cryptocurrency transactions. HMRC has:

• Issued "bulk data notices" to major centralised exchanges (including Coinbase, Kraken, and Binance UK) requiring disclosure of UK and former-UK customers' transaction histories
• Implemented the OECD's Crypto-Asset Reporting Framework (CARF), which from 2027 will require exchanges globally to report transaction data to tax authorities, including HMRC
• Integrated crypto analysis tools into its compliance operations to identify unreported gains

This means that the belief that crypto transactions are invisible to HMRC is no longer tenable. If you have undisclosed crypto gains from periods of UK residence, HMRC's data-matching is increasingly likely to identify them. Proactive disclosure via the Worldwide Disclosure Facility or a specific offshore disclosure approach is almost always preferable to being caught.

Reporting Requirements for Non-Residents

If you are genuinely non-resident and have no other UK filing obligations, you are generally not required to report a crypto disposal to HMRC. There is no standalone crypto reporting requirement for non-residents.

However, if you have a UK self-assessment filing obligation for other reasons (e.g., UK rental income), you may be asked on the return whether you have made cryptocurrency disposals. The correct answer for a non-resident should be that any crypto gains arose in the non-resident period and are not subject to UK CGT — but this should be stated clearly on the return, not simply omitted.

If you are in any doubt about your filing position, err on the side of transparency and take professional advice.

The Inheritance Tax Dimension

Non-resident status does not automatically exempt your estate from UK Inheritance Tax (IHT). Under the post-2025 IHT reforms, individuals who have been UK-resident for 10 or more years in the last 20 are "long-term UK residents" and subject to UK IHT on their worldwide estate — including cryptocurrency.

If you have a large crypto holding and have been UK-resident for a significant period, UK IHT exposure on your crypto assets is a live concern regardless of your current residence. This is a separate issue from CGT and requires separate estate planning.

Planning Points for Non-Resident Crypto Holders

1. Confirm non-resident status. CGT non-residence is only effective if your non-resident status is properly established under the SRT. Day-counting, tie analysis, and record-keeping must be in order.

2. Check the TNR clock. If you are within five complete tax years of UK departure, be cautious about crystallising large crypto gains. Take advice before any significant disposal.

3. Monitor situs guidance. HMRC's position on the situs of crypto may change. Keep up to date with CARF implementation and any legislative developments.

4. Consider DeFi and staking. Decentralised finance (DeFi) activities — staking, yield farming, liquidity provision — create income and potentially gains that are treated differently from simple buy-and-sell. HMRC has issued specific guidance on DeFi, and some activities are treated as income (taxable even for non-residents if UK-source). See the separate guide on crypto tax for UK expats.

5. IHT planning. If you have been a long-term UK resident with significant crypto holdings, review your IHT exposure as a matter of urgency.

How Global Investments Can Help

Global Investments works with HNW and internationally mobile clients who hold significant digital asset positions alongside traditional investments. We can introduce you to specialist UK tax advisers with experience of crypto taxation in both domestic and cross-border contexts, and help you integrate your crypto position into your overall wealth and estate plan.

Whether you are leaving the UK with unrealised crypto gains, managing an existing non-resident position, or planning a return, we can ensure the relevant rules are properly considered. Contact our team for a confidential discussion.

This article is for general information only. Tax rules — particularly relating to digital assets — are changing rapidly. Nothing here constitutes personal tax advice. Always seek independent professional guidance tailored to your situation. Investments, including digital assets, can fall as well as rise in value.