UK-USA Tax Treaty for UK Expats 2026 -- Tie-Breaker, Article 17 and Pension Rules

Last reviewed: 26 April 2026

The UK-US tax treaty (formally the UK-USA Double Taxation Convention 2001, gov.uk/government/publications/usa-tax-treaties) is the legal framework that determines how UK expats in the USA are taxed on UK-source income, and how US-source income is taxed for UK residents with US financial interests. The UK expat tax treaty USA framework covers: employment income, dividends, interest, royalties, pensions, capital gains, and business profits -- each with its own article allocating taxing rights between the two countries. For the UK tax residency rules that define whether you are UK-resident or non-UK-resident for treaty purposes, see our UK tax residency guide. For the pension implications of the UK-US treaty Article 17, see our UK pension abroad guide.

The UK expat tax treaty USA framework has been significantly affected by two recent UK legislative changes: the Finance Act 2025 abolition of non-domicile status from 6 April 2025 (replacing it with the 4-year FIG regime) and the Finance Act 2025 introduction of residence-based IHT (the 10-year long-term resident rule from 6 April 2025). Additionally, the non-resident dividend credit -- which previously allowed non-UK-resident shareholders in UK companies to claim a credit equal to the 10% dividend tax credit -- was abolished from 6 April 2026 (Autumn Budget 2025 OOTLAR, gov.uk). These changes affect UK expats in the USA who hold UK equities, UK pension funds, or who are planning a UK-to-USA or USA-to-UK relocation. The HMRC International Manual (gov.uk/hmrc-internal-manuals/international-manual) is the authoritative HMRC reference for the UK-US DTC application; IRS Publication 901 (irs.gov/pub/irs-pdf/p901.pdf) covers the US position on the treaty.

Article 4: residence tie-breaker

The UK-US DTC Article 4 determines "residence" for treaty purposes where an individual is regarded as resident in both countries simultaneously (a "dual resident"). The tie-breaker rules in Article 4(2) are applied in sequence: first, a "permanent home" test (the individual is resident in the state where they have a permanent home available; if homes in both countries, move to the next tie-breaker); second, "centre of vital interests" (the country with the closer personal and economic relations); third, "habitual abode" (the country where the individual normally lives); fourth, nationality (the state of which the individual is a national). For most UK expats who have physically relocated to the USA with their family and have given up their UK permanent home, the tie-breaker resolves to USA residence for treaty purposes from the date of departure from the UK. HMRC’s SRT (Statutory Residence Test, gov.uk/guidance/the-statutory-residence-test-srt) independently determines UK tax residency under UK domestic law; the SRT result may differ from the treaty tie-breaker position, requiring careful coordination. HMRC’s RDR1 (gov.uk/hmrc-internal-manuals/residence-domicile-and-remittance-basis) provides the residence/domicile framework.

Article 17: pension carve-out and the US savings clause

Article 17 of the UK-US DTC is the most practically significant provision for UK expats in the USA with UK pension funds (SIPPs, workplace pensions, defined benefit schemes). Article 17(1) provides that "pensions and other similar remuneration paid in consideration of past employment" and periodic pension payments are taxable "only in the Contracting State in which the recipient is a resident". For a UK national resident in the USA receiving income from a UK SIPP or defined benefit pension: under Article 17(1), that pension income should be taxable only in the USA (at US income tax rates) and not subject to UK income tax. A UK NT (No Tax) code from HMRC can be obtained to receive UK pension income gross without UK PAYE withholding; HMRC’s Charities, Savings and International 2 (CS&I2) team processes NT code applications. However, the critical caveat: Article 1(4) of the UK-US DTC (the "savings clause") provides that the USA retains the right to tax its own citizens and residents as if the treaty had not entered into force -- overriding most treaty benefits for US citizens and green-card holders. A UK national who has become a US permanent resident (green-card holder) or US citizen loses most treaty protections, including the Article 17 pension carve-out, under the savings clause. The IRS publications at irs.gov and the US Treasury Technical Explanation of the UK-US DTC are the US-side authoritative references; specialist US-UK cross-border tax advice is essential for pension drawdown planning.

Article 10: dividends and the abolished non-resident credit

Article 10 of the UK-US DTC governs dividends paid by a UK company to a US-resident shareholder, and vice versa. Under Article 10, UK dividends paid to US residents (who are not UK residents) may be taxed in both the UK and the USA, but the UK source tax is capped at the rate specified in the treaty: 15% for general portfolio shareholders; 5% for corporate shareholders holding 10%+ of the company. The non-resident dividend credit -- which previously allowed non-UK-resident shareholders in UK companies to reclaim a notional tax credit equal to the previous 10% dividend tax credit -- was abolished from 6 April 2026 (Autumn Budget 2025 OOTLAR). US-resident UK expats who hold UK equities (directly or through ISAs, noting ISA tax relief does not apply during non-residency) no longer benefit from any notional UK dividend credit from April 2026. The US treats UK dividends as ordinary foreign income, taxable at US ordinary income tax rates (10-37% federal) or qualified dividend rates (0-20%) depending on whether the UK company’s shares qualify as "qualified foreign corporation" stock. IRS Publication 901 (irs.gov/pub/irs-pdf/p901.pdf) covers the US treatment of UK dividends under the treaty.

Article 13: capital gains

Article 13 of the UK-US DTC governs capital gains. The general rule under Article 13(6) is that capital gains from the alienation of property are taxable only in the country of residence of the alienator (the seller). Key exceptions: gains from UK immovable property (UK real estate) are taxable in the UK under Article 13(1) -- non-UK-residents are subject to UK NRCGT (Non-Resident Capital Gains Tax) on UK residential property disposals regardless of treaty residence; gains from shares deriving value principally from UK immovable property are also UK-taxable under Article 13(2). For a UK expat in the USA who sells UK equities or UK funds (not UK property): the gain is taxable only in the USA under Article 13(6), not in the UK. However, the US savings clause (Article 1(4)) means US citizens and green-card holders pay US CGT on all worldwide gains regardless of the treaty. HMRC’s guidance on NRCGT is at gov.uk/capital-gains-tax-for-non-residents-uk-residential-property; a 60-day NRCGT return must be filed within 60 days of completion of a UK residential property sale by a non-UK-resident, with a £100 late filing penalty even where no CGT is due. The HMRC International Manual is the technical reference for Article 13 application.

Finance Act 2025 IHT and US-resident UK nationals

The Finance Act 2025 (effective 6 April 2025) introduced residence-based IHT that significantly affects UK nationals who have been long-term UK residents before relocating to the USA. The 10-year long-term resident test: individuals UK-resident in at least 10 of the prior 20 tax years are subject to UK IHT (Inheritance Tax Act 1984) on their worldwide estate -- including US bank accounts, US real estate, US securities, and other non-UK assets -- during a tail period after departure. The tail period: up to 10 years after departure for those with the maximum 20-year UK residency history. During the tail period, all worldwide assets are within the UK IHT estate; IHT is charged at 40% above the nil-rate band (£325,000 for 2025/26, frozen to April 2030). A UK national who spent 15 years in the UK before moving to the USA in 2020 has a tail period of approximately 7-8 years post-departure; their US real estate, US investment accounts, and US retirement accounts (401k, IRA) are all within the worldwide UK IHT estate during the tail. The UK-US estate and gift tax treaty (a separate instrument from the income tax DTC) provides some double taxation relief for US estate tax and UK IHT on the same assets; specialist UK-US cross-border estate planning advice is essential. HMRC’s IHT guidance at gov.uk/inheritance-tax covers the Finance Act 2025 residence-based rules.

The 4-year FIG regime: implications for US-to-UK movers

The Finance Act 2025 4-year FIG (Foreign Income and Gains) regime (effective 6 April 2025) is relevant for US nationals or UK expats returning to the UK from the USA who have not been UK-resident in any of the prior 10 consecutive tax years. Such individuals qualify for the FIG regime: they are exempt from UK income tax and CGT on all foreign income and gains for their first 4 tax years of UK residency, regardless of whether that income is remitted to the UK. For a UK national returning from a 10+ year stay in the USA: their US rental income, US dividends, US retirement account distributions, and US capital gains are all outside UK tax for the first 4 years of UK residency under FIG. The FIG regime replaces the old remittance basis that applied to non-domiciled UK residents; unlike the remittance basis, the FIG exemption applies automatically (no election required) and without distinction by domicile. The Temporary Repatriation Facility (TRF), available for 2025/26 and 2026/27, allows former non-doms to remit pre-2025 foreign income to the UK at a reduced flat rate (12% for 2025/26; 15% for 2027/28). HMRC’s guidance on the FIG regime at gov.uk/hmrc-internal-manuals/residence-domicile-and-remittance-basis is the authoritative reference.

Article 11: interest, and Article 7: business profits

Article 11 of the UK-US DTC governs interest income. US-source interest paid to UK residents: under Article 11(1), interest arising in the USA and paid to a UK resident is taxable in the UK and may also be taxed in the USA, with the US source tax capped at 0% for most interest (bank interest, government bonds, corporate bond interest) under the revised 2001 DTC. UK-source interest paid to US residents: similarly, UK-source interest is generally exempt from UK withholding tax for US-resident recipients. Article 7 covers business profits: a UK-resident business operating in the USA is taxable in the USA only if it has a "permanent establishment" (PE) there (a fixed place of business, dependent agent, or construction site above 12 months per Article 5). For UK nationals who are self-employed or run UK companies and work remotely from the USA, the PE risk is a significant compliance concern; working in the USA for an extended period from a fixed location (home office) may constitute a PE, subjecting the UK business profits to US federal and state income tax. The IRS and HMRC provide guidance on PE determination; specialist US-UK tax advice is essential for remote workers operating across the two jurisdictions.

This article is for general information only and does not constitute tax, legal, financial or immigration advice. Rules and rates change; verify with the primary sources cited or consult a qualified adviser before acting.

FAQ

Can UK expats in the US receive UK pension income tax-free in the UK?

Under Article 17(1) of the UK-US DTC (2001), pension income paid to a US-resident UK national is taxable only in the USA -- not in the UK. A UK NT (No Tax) code from HMRC allows UK pension income to be paid gross without UK PAYE withholding. However, the US savings clause (Article 1(4)) overrides this treaty benefit for US citizens and green-card holders; US persons pay US income tax on worldwide income including UK pension distributions, and the treaty Article 17 exemption does not apply to eliminate UK PAYE for US persons without specialist cross-border planning. IRS Publication 901 covers the US-side treatment.

What is the UK-US DTC savings clause?

The US savings clause (UK-US DTC Article 1(4)) provides that the USA retains the right to tax its own citizens and residents as if the treaty had not entered into force. This overrides most treaty benefits for US citizens and green-card holders: the Article 17 pension carve-out, the Article 10 dividend rate caps, and other treaty benefits are largely unavailable to US persons, who pay US tax on worldwide income regardless of treaty provisions. Non-US-person UK expats in the USA retain full treaty protection. Specialist US-UK cross-border tax advice is essential for US persons with UK income.

Does Finance Act 2025 IHT affect UK nationals living in the USA?

Yes, for long-term UK residents. Finance Act 2025 (from 6 April 2025) introduced residence-based IHT: individuals UK-resident in at least 10 of the prior 20 tax years have worldwide IHT exposure during a tail period (up to 10 years) after departure. During the tail, US bank accounts, US real estate, and US securities are all within the UK IHT estate. IHT is 40% above the nil-rate band (£325,000). The UK-US estate and gift tax treaty provides some relief for double taxation on the same assets. HMRC’s IHT guidance is at gov.uk/inheritance-tax.

What happened to the non-resident dividend credit for UK shareholders in the USA?

The non-resident dividend credit -- which previously allowed non-UK-resident shareholders in UK companies to reclaim a notional 10% dividend tax credit -- was abolished from 6 April 2026 (Autumn Budget 2025 OOTLAR). US-resident UK expats who hold UK equities directly no longer benefit from any notional UK dividend credit from April 2026. UK dividends paid to US residents are still subject to Article 10 DTC withholding rate caps (typically 15% for portfolio shareholders). IRS Publication 901 covers the US treatment of UK dividends under the DTC.

What is the 4-year FIG regime and how does it affect UK-US movers?

The 4-year FIG (Foreign Income and Gains) regime (Finance Act 2025, from 6 April 2025) exempts qualifying new UK residents from UK income tax and CGT on all foreign income and gains for their first 4 tax years of UK residency, provided they have not been UK-resident in any of the prior 10 consecutive tax years. UK nationals returning from 10+ years in the USA qualify; their US income, US dividends, and US capital gains are outside UK tax for the first 4 years. HMRC guidance at gov.uk/hmrc-internal-manuals/residence-domicile-and-remittance-basis.

Do I need to file a UK tax return if I am a non-UK-resident with US income?

Non-UK-residents generally do not file UK Self Assessment for US-source income alone. UK Self Assessment is required only where the individual has UK-source income above the personal allowance (£12,570 for 2025/26): UK rental income, UK pension income (if no NT code), UK employment income for UK duties, or UK dividends above the allowance. US-source income (US salary, US dividends, US rental) is not UK-taxable for non-UK-residents. HMRC’s guidance on who must file Self Assessment is at gov.uk/self-assessment-tax-returns.

Sources

1. GOV.UK -- UK-USA Double Taxation Convention 2001 (full treaty text and protocols) (verified 26 April 2026)
2. IRS -- Publication 901: US Tax Treaties (UK-US DTC provisions, savings clause) (verified 26 April 2026)
3. HMRC -- International Manual (DTC application, Article 17 pension provisions) (verified 26 April 2026)
4. GOV.UK -- IHT: Finance Act 2025 residence-based IHT from 6 April 2025 (verified 26 April 2026)
5. GOV.UK -- Autumn Budget 2025 OOTLAR (non-resident dividend credit abolished 6 April 2026; FIG regime) (verified 26 April 2026)