For UK-resident Self-Assessment filers with foreign income, residency status drives the entire tax position. UK residents are taxed on worldwide income; non-residents are taxed only on UK-source income. The Statutory Residence Test (SRT) determines status year by year. Foreign Tax Credit Relief prevents double taxation. Split-year treatment handles the year of arrival or departure. And the April 2025 abolition of the remittance basis replaced the centuries-old non-dom regime with a residence-based test.
The Statutory Residence Test
The SRT applies a three-tier test in order:
- 1Automatic overseas tests: under 16 days in UK (if resident in any of last 3 years) OR under 46 days (if not resident in last 3 years) OR full-time work overseas.
- 2Automatic UK tests: 183+ days in UK OR only home in UK for 91+ days OR full-time work in UK.
- 3Sufficient ties test: combination of UK ties (family, accommodation, work, 90-day, country) and days in UK.
Each test is applied in order; if an automatic test resolves status, no further tests apply. The sufficient ties test is the most common pathway for borderline cases:
Sufficient ties test: UK days vs ties to be UK resident
| Days in UK | Arriver (not resident in last 3y) | Leaver (resident in last 3y) |
|---|---|---|
| 16-45 | Always non-resident | 4 ties needed |
| 46-90 | 4 ties needed | 3 ties needed |
| 91-120 | 3 ties needed | 2 ties needed |
| 121-182 | 2 ties needed | 1 tie needed |
| 183+ | Always resident | Always resident |
Reporting foreign bank interest and dividends
UK residents must declare foreign income on Self-Assessment regardless of where it is paid:
- Foreign bank interest: declared on the SA106 foreign income page.
- Foreign dividends: declared on SA106, qualifying for the £500 dividend allowance and dividend tax rates.
- No de minimis: even £1 of foreign interest must be declared.
- Currency conversion: HMRC accepts spot rate at receipt or HMRC published average rates.
- Foreign tax suffered: claim Foreign Tax Credit Relief to avoid double tax.
Foreign Tax Credit Relief
Where the same income is taxed in the UK and overseas, FTCR provides relief:
- 1The lower of UK tax or foreign tax on the same income is creditable.
- 2Treaty relief: most countries have double-taxation treaties capping the foreign tax suffered.
- 3Unilateral relief: where no treaty, unilateral domestic UK relief still applies.
- 4Excess foreign tax: cannot offset other UK tax; lost.
- 5Documentation: certificates of foreign tax suffered required for HMRC enquiry.
Split-year treatment for arrival or departure
Where an individual arrives in or leaves the UK mid-year, split-year treatment can apply:
- Cases for arriving: starting full-time work in UK, ceasing full-time work overseas, becoming UK-resident with UK home.
- Cases for leaving: starting full-time work overseas, leaving UK with no UK home, accompanying spouse on overseas employment.
- Effect: the year is split into a UK-resident period and a non-resident period.
- UK source income: taxable in both periods (subject to specific rules).
- Foreign source income: taxable only during the UK-resident period.
The Foreign Income & Residency Series
We're publishing two detailed pieces per week from this series. Check back shortly.
NRLS for expat landlords
Non-resident landlords with UK rental property:
- Without NRLS approval: letting agents (or tenants paying >£100/week direct) must withhold 20% basic-rate tax.
- NRLS-approved landlords: receive rents gross, file annual UK Self-Assessment.
- Application via NRL1i (individual) or NRL2i (company); 4-6 week processing.
- UK personal allowance available to UK citizens, EEA nationals, and certain treaty-country residents.
- CGT applies on UK property disposals via the 60-day reporting regime regardless of residence.
CRS and offshore asset disclosure
The Common Reporting Standard automatically exchanges financial account information between 100+ jurisdictions:
- Offshore banks, brokerages, insurance companies report account holders to local tax authority.
- Local tax authority forwards to HMRC for UK-resident account holders.
- HMRC cross-references against UK Self-Assessment declarations.
- Unreported offshore income triggers HMRC enquiry, potential 200% penalty surcharge for offshore matters, and potential criminal prosecution for serious cases.
CRS makes offshore non-disclosure a high-risk strategy
HMRC receives roughly 6 million CRS data points annually, automatically cross-referenced. Offshore non-disclosure is now actively reconciled, not a strategy.
The post-April-2025 non-dom regime
The remittance basis was abolished from 6 April 2025 and replaced with a residence-based regime:
- 4-year FIG (Foreign Income and Gains) exemption: new arrivals to the UK in their first 4 tax years pay no UK tax on foreign income and gains.
- After 4 years: full worldwide taxation on the arising basis.
- Transitional reliefs: existing remittance-basis users had options for 2025-26 and 2026-27 around relevant FIG tax-free remittance and rebasing.
- IHT: residence-based test from April 2025; long-term residents (10 of last 20 years) face IHT on worldwide assets.
Foreign income or residency-test complexity?
A specialist Harrow accountant handles the SRT, foreign tax credit, NRLS approval, and the post-April-2025 non-dom regime.
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