UK tax for UK residents on foreign income and gains

Overview

Generally, the UK tax system taxes anyone who is resident in the UK on their worldwide income and gains. On the other hand, if you are non-resident in the UK, your foreign income and gains are not in scope of UK tax. 

Therefore, only UK resident individuals will need to consider a possible UK tax liability on their foreign income and gains, unless the rules for temporary non-residence apply to any period of non-residence.

From tax year 2025/26, if you are a qualifying new resident and claim foreign income and gains relief, UK tax will only be charged on your UK source income and gains.  

For tax years up to 2024/25, if you are UK resident but non-domiciled, the amount of UK tax you have to pay on foreign income and gains may depend on whether or not you bring money or assets into the UK.

From 2017/18 to 2024/25 inclusive, the law treats some individuals who are not UK domiciled as if they are domiciled (‘deemed domiciled’) in the UK for income tax and capital gains tax purposes.

UK resident taxpayers should usually consider the following steps when working out if UK tax is due on their foreign income and gains:

1. What is the position under UK domestic law? 
2. If the income is taxable under UK domestic law, what is the position under any relevant double taxation agreement?
3. If the income or gain is taxable in the UK after considering the above, how can any double taxation be relieved?

For tax years starting from 6 April 2025, the position under UK domestic law will depend on the following:

• Whether you can claim relief for foreign income and/or gains under the new foreign income and gains regime
• Whether you claimed the remittance basis of taxation in a tax year up to 2024/25 and are now bringing foreign money or assets to the UK
• Whether you have previously ‘designated’ any funds under the temporary repatriation facility.

For tax years up to and including 2024/25, the position depends on your UK domicile status, and if you are UK non-domiciled, whether the remittance basis applies to the income, gain or asset.

Examples

Examples of foreign income and foreign gains include:

• Earnings relating to work duties performed in another country (even if this is for a UK employment, or the earnings are paid in or from the UK)*
• Profits from running a business in another country
• Income from renting out a property in another country
• Gains from selling or giving away overseas assets, such as a house or shares
• Interest on savings in overseas bank accounts
• Overseas pension income
• Other overseas investment income, such as dividends on shares in overseas companies

*if overseas workday relief does not apply, then for tax years up to and including 2024/25 the ability to exclude earnings for non-UK duties under the remittance basis is restricted to earnings from a foreign employer where the duties are performed wholly outside the UK. We recommend you seek professional advice in this situation.

Foreign workers’ exemption

For tax years up to and including 2024/25, if you work in the UK and have a small amount of foreign earnings you might be able to avoid filing a tax return and paying UK tax on your foreign income if the ‘foreign workers’ exemption’ applies. It does not matter if the foreign income is remitted to the UK. The exemption is available if all of the following conditions apply for the year:

• You are resident in the UK.
• You are not domiciled in the UK.
• You have income from employment duties performed wholly or partly in the UK.
• Your foreign employment income* does not exceed £10,000 and it has been subject to tax in the country it arose (even if no tax was paid, for example because it was covered by a tax allowance in that country).
• Your foreign investment income does not exceed £100, and is subject to tax in the country it arose.
• You have no other foreign income or gains.
• Your worldwide income and gains are less than the higher rate threshold for the tax year (£37,700 in 2024/25 after deducting personal allowances, though different thresholds apply in Scotland) – in other words, you are a basic rate taxpayer.
• You have not submitted a self assessment tax return for the year.

*if you meet the residence requirements for overseas workday relief, this means all employment income for duties performed outside the UK (otherwise, it is restricted to income from a foreign employer where all the duties from that employment are performed outside the UK).

If all of the above conditions apply, the foreign income is exempt from UK tax. You will still be liable to UK tax on your UK income and gains. This exemption is aimed at lower earning individuals who might inadvertently be non-compliant with the complex remittance basis rules.

Bringing money to the UK

In general, the only occasion you might need to pay UK tax on money or assets which you bring to the UK is where any such amounts represent foreign income or gains that arose in tax years (up to and including 2024/25) for which you were UK resident and taxable on the remittance basis. This is still the case even if the remittance occurs after 5 April 2025.

If you are resident in the UK after 6 April 2025 and you were previously taxed on the remittance basis, you may be eligible for the temporary repatriation facility. This will allow you to remit prior year income to the UK at a special low rate of tax provided you ‘designate’ the amounts concerned on your self assessment tax return for any tax year from 2025/26 to 2027/28.

If you make a transfer to the UK from an overseas savings account which earns interest, even if the savings relate to a period before you were resident in the UK for tax purposes, you are likely to be deemed to remit some of the foreign interest income with any transfer to the UK from that account. This could trigger an unexpected tax liability in the UK, so you should seek advice before you make any transfers.

Note that if you are bringing physical cash into, or out of, Great Britain and it exceeds £10,000 (or 10,000 Euros, in the case of Northern Ireland), you must declare it. 

Undisclosed foreign income and gains

You may have received a letter saying that HMRC’s information indicates you currently have or previously had offshore income or gains, and if you have additional tax to pay, to tell HMRC using the worldwide disclosure facility.

If you have undisclosed UK tax liabilities in relation to offshore income and gains for tax years 2015/16 and earlier, and you did not disclose this to HMRC by 30 September 2018, you may be liable to penalties under the requirement to correct regime. See our information on Offshore penalties.

We strongly recommend that you seek advice in this situation.