This is not tax advice. Cross-border outcomes turn on facts this page cannot know: your visa category, your income mix, where your employer is incorporated, what you own and when you bought it. Use this to ask a qualified cross-border accountant better questions, and verify every figure against the UK's tax authority and, for the US side, the IRS guidance for citizens abroad.
Your position in the UK
You do not stop being a US taxpayer. You file a 1040 yearly and report UK bank and pension accounts on FBAR and Form 8938. For 2026 the foreign earned income exclusion covers $132,900, up from $130,000 in 2025, but most people in the UK do better with the foreign tax credit, because UK rates run above US rates once you cross into the 40 percent band at £50,271.
UK residence is decided by the Statutory Residence Test, not by your visa. Spend 183 days here and you are resident. Have your only home here for 91 consecutive days and use it for 30, and you are resident. Work full time in the UK for a 365-day period and you are resident. The tax year runs 6 April to 5 April, which makes the first two filings messy.
Rates are 20 percent above the £12,570 personal allowance, 40 percent above £50,270 and 45 percent above £125,140, with National Insurance at 8 percent and then 2 percent on top. Scotland sets its own bands, topping out at 48 percent. The 2001 treaty handles pensions, dividends and double taxation, and the 1984 social security agreement, in force since January 1985, keeps you out of both systems at once. With 10 years of prior non-UK residence, the four-year foreign income and gains regime that replaced the non-dom rules in April 2025 can shelter overseas income, at the cost of your personal allowance.
The United States does not stop taxing you
The US taxes citizens on worldwide income regardless of where they live. Moving to the UK adds a second tax system; it does not remove the first one. Most Americans abroad end up owing little or nothing to the IRS, but that outcome is produced by filing correctly, not by leaving.
Two mechanisms produce that result. The foreign earned income exclusion removes foreign wages and self-employment profit up to an annually indexed cap, but reaches earned income only and does nothing about self-employment tax. The foreign tax credit offsets US tax dollar-for-dollar with income tax actually paid to the UK, reaches passive income the exclusion cannot, and can leave credits to carry forward. You cannot apply both to the same dollar. Separately, FBAR and FATCA reporting is triggered by account balances rather than by tax owed, and carries penalties out of all proportion to the tax at stake.
The full mechanics are the same wherever you move, so they live in one place: US taxes when you live abroad covers the exclusion tests, the credit, treaties and the saving clause, FBAR and FATCA thresholds, self-employment tax and state residency. The rest of this page is what the UK specifically changes.
Which mechanism fits the UK
The UK's top rate of 45% sits at or above the US federal top rate of 37%. Local tax is doing the heavy lifting, so the foreign tax credit is the mechanism worth modelling first: it usually eliminates the US liability outright and leaves excess credits to carry forward.
Self-employment in the UK
A totalization agreement covers the UK, so a self-employed American here can normally be assigned to one social security system and exempted from the other, evidenced by a certificate of coverage. Arrange it at the start of the engagement, not at filing time.
US-side official references: FEIE ·Foreign tax credit ·FBAR ·FATCA reporting ·Totalization agreements
Which relief mechanism reaches which income
The most common planning error is assuming the exclusion covers everything. It covers one category. This table maps each kind of income against the mechanisms available to you, with the last column set to the UK's recorded agreement status.
| Income type | Foreign earned income exclusion | Foreign tax credit | Treaty position for the UK |
|---|---|---|---|
| Wages earned while living in the UK | Yes, up to the annual cap, if you pass the residence or presence test | Yes, on anything above the cap or not excluded | The employment income article assigns the primary taxing right |
| Self-employment profit | Income tax only. Self-employment tax survives the exclusion | Yes, against income tax on the same profit | Totalization decides which social security system you pay into |
| Dividends and interest | No. It reaches earned income only | Yes, for foreign tax actually paid on it | Dividend and interest articles usually cap withholding |
| Capital gains on investments | No | Yes, where a foreign tax is paid on the same gain | A gains article assigns the taxing right by asset type |
| Rental income from property | No | Yes, for foreign tax charged on foreign property | Immovable property is normally taxed where it sits |
| Pensions and retirement account withdrawals | No | Yes, where foreign tax is charged on the withdrawal | The pension article decides. Read it before you draw |
| US Social Security benefits | No | Depends which country is entitled to tax them | Many treaties assign them to one country only |
Read the rows against your own income mix. Someone on a local salary and nothing else uses one row of this table. Someone with a brokerage account, a rental at home and vesting equity uses five, and each one can land in a different country.
What the UK's agreements with the US actually change
The general mechanics above apply to every American abroad. What differs country by country is which of them the UK has an agreement to soften. Of the 15 countries covered on this site, 15 have a US income tax treaty, 12 have a totalization agreement and 12 have both. the UK is the case below.
| Issue | Status for the UK | What that means for you |
|---|---|---|
| Double tax on employment income | Treaty in force | A US–the UK income tax treaty exists, so each type of income has an assigned taxing country and there is a defined route to relief rather than an argument. You still file both returns; the treaty decides who taxes what first. |
| Being treated as resident by both countries | Tie-breaker available | Treaties carry a residence tie-breaker: permanent home, then centre of vital interests, then habitual abode, then nationality. It gives you a defensible answer in the year you move, when both countries can plausibly claim you. |
| Social security and payroll contributions | Totalization in force | A totalization agreement covers the US and the UK, so the same earnings are not charged to both social security systems. It also lets contribution periods in each country count toward qualifying for a benefit in the other. |
| Self-employment and freelancing | Certificate of coverage route | Where an agreement applies, a certificate of coverage from the system you do pay into is what you show the other one. Get it before the first invoice, not after the first assessment. |
| Pensions, retirement accounts and investment income | Treaty articles apply | Treaty articles usually address pensions, dividends, interest and capital gains separately from wages. Read the specific articles: a treaty that solves your salary can leave your brokerage account taxed in a way you did not expect. |
Treaty and totalization status is recorded from the sources listed at the foot of this page. Agreements are amended and protocols enter force on their own timetable, so check the current text before taking a position on a return.
Two numbers worth running before you move
Consumption tax, which nobody models
Income tax gets the attention. Consumption tax takes its slice every month without appearing on any return. A US household spending the national average net salary of $4,230 a month would need roughly $3,892 a month in the UK for the same basket, at the UK's overall price level. Of that, the VAT embedded in the prices is up to about $649 a month, against roughly $295 in embedded sales tax at home.
| Measure | United States | the UK |
|---|---|---|
| Headline consumption tax rate | 7.5% | 20% |
| Equivalent monthly basket | $4,230 | $3,892 |
| Tax inside that basket, per month | $295 | $649 |
| Per year | $3,540 | $7,788 |
A ceiling, not a bill. It assumes the whole net salary is spent, and in practice rent sits outside VAT in most systems while food, medicine, books and transport often carry reduced or zero rates, so real exposure lands below this line. The direction of the gap is the useful part: about $354 more per month than at home, before any reduced rate applies.
Marginal rate, read honestly
the UK's top personal rate is 45% against a US federal top rate of 37%, a gap of +8 points. That comparison is weaker than it looks in both directions. The US figure excludes state income tax, which can add several points on top. The British figure bites at its own threshold, which may be far lower or far higher in income terms than the US bracket it is being compared to. Top rates tell you the shape of a system, not your bill. Model your actual income against the brackets on the official site before you decide anything.
How the UK compares on tax across our dataset
the UK ranks 6 of 15 on headline top personal rate, lowest first, with 9 countries charging a higher top rate. Every row links to that country's own tax page.
| Country | Top rate | VAT | US treaty | Totalization |
|---|---|---|---|---|
| United States (baseline) | 37% | 7.5% | Not applicable | Not applicable |
| Mexico | 35% | 16% | Yes | No |
| Thailand | 35% | 7% | Yes | No |
| New Zealand | 39% | 15% | Yes | No |
| Italy | 43% | 22% | Yes | Yes |
| Australia | 45% | 10% | Yes | Yes |
| United Kingdom · this page | 45% | 20% | Yes | Yes |
| Spain | 47% | 21% | Yes | Yes |
| Norway | 47.4% | 25% | Yes | Yes |
| Germany | 47.5% | 19% | Yes | Yes |
| Portugal | 48% | 23% | Yes | Yes |
| Netherlands | 49.5% | 21% | Yes | Yes |
| Ireland | 52% | 23% | Yes | Yes |
| Sweden | 52.4% | 25% | Yes | Yes |
| Canada | 53.5% | 5% | Yes | Yes |
| Japan | 55.9% | 10% | Yes | Yes |
Headline rates only. They ignore social contributions, local surtaxes, wealth and inheritance taxes, and the very different incomes at which each top rate starts. A country with a high top rate that begins at a high threshold can cost a middle earner less than one with a lower rate that begins early.
The sequence of tax events in your move year
The move year is the messy one: part-year residence in two systems, two calendars, and deadlines that do not line up. This is the order things generally happen in.
- Before you leaveFix the date you stop being a US state resident and the date you land, because almost every later question is answered by those two dates. Take a snapshot of account balances, unrealised gains and any equity vesting schedule. Selling before you become the UK tax resident is a different transaction from selling after.
- The day you arriveRecord the arrival date against something durable, such as a boarding pass, a lease or a registration receipt, because you may have to evidence it years later. It is the day the clock starts on the rule that decides your British tax residency: The Statutory Residence Test. You are automatically UK resident if you spend 183 or more days in the UK in a tax year, if your only home was in the UK for 91 consecutive days and you visited or stayed in it for at least 30 days in the year, or if you worked full time in the UK for any 365-day period touching that year. Below those thresholds a sufficient ties test applies. The UK tax year runs 6 April to 5 April.
- Weeks 1 to 8: register locallyA local tax number is usually a precondition for a bank account, a lease and a payroll run, so it happens early whether or not you feel like a taxpayer yet. Registering does not by itself make you resident; the residency rule above does.
- First local filingYour first British return covers only the part of the year you were resident, in most systems, and it is the return where split-year treatment is claimed if the country offers it. Deadlines rarely match the US calendar.
- First US filing from abroadTaxpayers whose tax home is abroad get an automatic extension beyond the April deadline, and a further extension on request. The extension is for filing, not for paying: interest runs from the original date.
- The same season: information returnsThe FBAR and, above higher thresholds, Form 8938 are filed on their own schedules and carry their own penalties. They report balances, not income, so people who owe nothing still miss them and still get penalised.
- Month 12 onwardThe bona fide residence test needs an uninterrupted tax year abroad, so the first full calendar year is often the first year you can use it. Until then the physical presence test, 330 full days abroad in a 12-month window, is usually the only route to the exclusion.
State residency: the bill people do not expect
Federal filing is the obligation everyone knows about. The one that catches people is the state they left. States set their own residency rules, and several test domicile, meaning your permanent home in intent, rather than where you physically are. Under a domicile test you can spend a full year in the UK and still be assessed as a resident of your old state, on your worldwide income, with none of the federal relief above available against it. The FEIE and the foreign tax credit are federal mechanisms, and a state is not required to follow them.
What severing residency usually rests on, and what to be able to evidence:
- Ending the lease or selling the home, rather than keeping it available to you.
- Surrendering the state driver's licence and voter registration.
- Moving vehicle registration, professional licences and mailing address out of state.
- Where dependants live and where school-age children are enrolled.
- Day counts, kept contemporaneously. A calendar reconstructed three years later convinces nobody.
- Filing a final part-year return for the state, which is what formally closes the file.
Check your specific state's rule before you leave, not after. It is easier to establish that you left cleanly on the way out than to argue it from London two years later.
What to keep, from day one
- A day-count log with arrival and departure dates for every trip, including trips back to the US. Both the physical presence test and the UK's own residency rule are decided on days.
- Local payslips and the annual British tax assessment, which is the evidence of foreign tax paid that a credit claim rests on.
- Year-end statements for every non-US account, plus the maximum balance during the year, which is what the FBAR asks for and what banks rarely show by default.
- Cost basis and acquisition dates for anything you owned before you moved, in USD at the time.
- Your certificate of coverage, if a totalization agreement applies to you.
- The exchange rates you used, and the source of them, applied consistently across the year.
Sources and review
The the UK-specific figures on this page, meaning the residency rule, treaty and totalization status, rates and notes, come from the sources below. The general US mechanics are described from published IRS, FinCEN and SSA guidance, linked inline above.
What these numbers are. The headline figures were re-derived from primary sources during review. Some category indices could not be matched to a published statistic and are reasoned estimates, marked as such in the list below. Where a source entry says a value is derived, estimated or crowd-sourced, that is exactly what it is: no international body publishes a like-for-like index for every category, and private insurance premiums are not published at all in most countries. Rent figures are national market averages, so a capital city will run above them. How the dataset is built.
- OECD, PPP detailed results: price level indices, United Kingdom with United States = 100, 2024 (SDMX dataflow DSD_PPP@DF_PPP_CPL). Retrieved values: household final consumption 87.3; food and non-alcoholic beverages 85.1; restaurants and accommodation 87.2; transport 111; clothing and footwear 78.9; information and communication 81.2; housing, water, electricity, gas and other fuels 95.4; alcoholic beverages 117; tobacco 192. 2024 is the latest year published — accessed September 4, 2026
- OECD Data Explorer, Purchasing power parities and price level indices (browsable source for the dataflow above) — accessed September 4, 2026
- World Bank, PPP conversion factor for household final consumption, United Kingdom (0.682739 GBP per international $ in 2024; 0.701529 in 2025) — accessed September 4, 2026
- World Bank, official exchange rate, United Kingdom (0.782415 GBP per USD in 2024; 0.759474 in 2025). Price level = PPP / exchange rate: 2024 gives 87.3, reproducing the OECD figure exactly, and 2025 gives 92.4, which is col_index_vs_us. The ratio 92.37 / 87.26 = 1.059 is the factor used to rebase the 2024 OECD category indices onto the 2025 basis, giving groceries 90, dining 92 and transport 117 — accessed September 4, 2026
- European Central Bank, euro foreign exchange reference rates, 4 September 2026 (EUR/USD 1.1622, EUR/GBP 0.85898, implying GBP/USD 1.3530). This rate is used for every currency conversion on this page — accessed September 4, 2026
- ONS, Private rent and house prices, UK: August 2026 (July 2026 average rents: UK £1,393, one-bedroom £1,132; London £2,317; Wales £843) — accessed September 4, 2026
- ONS, Price Index of Private Rents, UK: monthly price statistics, 19 August 2026 edition. One-bedroom rental prices for July 2026 read directly from the dataset: United Kingdom £1,132, London £1,752, Bristol City of £1,223, Manchester £998, Wales £634. rent_1bed_center_usd uses London (£1,752 x 1.3530 = $2,370); rent_1bed_outside_usd uses the UK average (£1,132 x 1.3530 = $1,532) — accessed September 4, 2026
- rent_index_vs_us derivation: the OECD 2024 price level index for housing, water, electricity, gas and other fuels is 95.4 with the US at 100; rebased by the 1.059 factor above this gives 101, so the rent index is set at 100. No directly comparable official US one-bedroom rent level was retrievable, so this index is a sourced approximation rather than a like-for-like rent comparison — accessed September 4, 2026
- ONS, Employee earnings in the UK: 2025 (median gross annual earnings for full-time employees £39,039 in April 2025, up from £37,439 in April 2024). Net of 2026-27 income tax (£5,293.80) and employee National Insurance (£2,117.52) this is £31,628 a year, £2,636 a month, or $3,566 at 1.3530 — accessed September 4, 2026
- ONS, Provisional population estimate for the UK: mid-2025 (69.5 million, 69,487,000 on 30 June 2025) — accessed September 4, 2026
- GOV.UK, Income Tax rates and Personal Allowances (£12,570 allowance; 20 percent to £50,270, 40 percent to £125,140, 45 percent above) — accessed September 4, 2026
- GOV.UK, National Insurance rates and categories, 2026 to 2027 (employee Class 1 category A at 8 percent from £242 to £967 a week, 2 percent above) — accessed September 4, 2026
- GOV.UK, VAT rates (standard rate 20 percent, reduced 5 percent, zero rate 0 percent) — accessed September 4, 2026
- GOV.UK, Tax on foreign income: UK residence and tax (Statutory Residence Test automatic UK tests; tax year 6 April to 5 April) — accessed September 4, 2026
- GOV.UK, Check if you can claim the 4-year foreign income and gains regime (started 6 April 2025; requires 10 years of prior non-UK residence; claiming forfeits Income Tax and Capital Gains Tax allowances) — accessed September 4, 2026
- IRS, United Kingdom (UK) tax treaty documents (2001 treaty, protocol, technical explanation and exchange of notes) — accessed September 4, 2026
- IRS, tax inflation adjustments for tax year 2026 (foreign earned income exclusion $132,900, up from $130,000 for 2025) — accessed September 4, 2026
- legislation.gov.uk, The Social Security (United States of America) Order 1984 (SI 1984/1817), giving effect to the Agreement on Social Security signed 13 February 1984; Parts I, II, IV, V and Article 7(1) in force from 1 January 1985 and Part III from 1 January 1988 — accessed September 4, 2026
- IRS, Totalization agreements (general explanation of how the agreements remove dual social security coverage and contributions) — accessed September 4, 2026
- GOV.UK, Pay for UK healthcare as part of your immigration application: how much you pay (£1,035 per year standard; £776 per year for students, their dependants, Youth Mobility Scheme holders and under-18s) — accessed September 4, 2026
- GOV.UK, NHS entitlements: migrant health guide (anyone in England can register and consult with a GP without charge; A&E free to all; ordinarily resident test for secondary care; 150 percent of NHS cost charged to non-exempt overseas visitors) — accessed September 4, 2026
- NHS, Visiting or moving to England (the NHS's own guidance on using the NHS if you are moving to England from outside the EEA, including entitlement and exemptions). This is healthcare.official_url: the national health service itself rather than the Home Office page about paying the immigration health surcharge — accessed September 4, 2026
- utilities_index_vs_us energy component: Ofgem, Energy price cap will rise by 4% from October 2026 (£1,723 a year, up £60 on £1,663, for a typical dual-fuel household paying by direct debit, 1 October to 31 December 2026). Consumption assumption: Ofgem's typical domestic consumption values as revised in July 2026, which the release describes as about 7 percent less electricity and 17 percent less gas than the previous review, so this is actual metered national household usage priced at the capped tariff, not a unit price. £1,723 / 12 = £143.58 a month, $194 at 1.3530 — accessed September 4, 2026
- utilities_index_vs_us water component: Discover Water (the industry and regulator portal run with Water UK, Ofwat, CCW and the Drinking Water Inspectorate), average annual bill. Forecast average combined water and sewerage bill for England and Wales, April 2026 to March 2027: £639, sourced to Water UK. £639 / 12 = £53.25 a month, $72 at 1.3530. Water is billed separately from rent in the UK; only social and a minority of furnished lets bundle it — accessed September 4, 2026
- utilities_index_vs_us derivation. Basis: a typical monthly household bill for one basket - electricity, heating, water, sewerage and refuse for a normal dwelling - not a per-kWh unit price. UK side, converted at £1 = $1.3530: £143.58 energy (Ofgem cap, dual fuel, actual metered typical consumption, above) + £53.25 water and sewerage (Water UK via Discover Water, above) + an ESTIMATED £11 for refuse = £207.83 a month, or $281. US side: $210 a month for the same basket. That $210 is the dataset-wide US reference basket, fixed across every country page so the indices are comparable; it is a site benchmark, not a figure reconstructed here, and the only US component independently sourced at this URL is EIA's 2024 US-total average residential electricity bill of $142.26 a month (863 kWh at 16.48 cents/kWh, table 5A). 281 / 210 x 100 = 134. Two ESTIMATED elements: the £11 refuse figure, because UK households receive no refuse bill (collection is funded from council tax) and the per-household cost sits inside MHCLG revenue outturn spreadsheets rather than in any retrievable published statistic - excluding refuse entirely the index would be 127; and the non-electricity part of the US $210, which is a benchmark rather than a derived total. Treat 134 as directionally right rather than precise. This replaces the previous energy-only figure of 81, which compared UK dual fuel with a US energy bill built from gas prices per gas customer rather than per household and left water and refuse out of both sides — accessed September 4, 2026
- GOV.UK, Skilled Worker visa: how much it costs (£819 up to 3 years, £1,618 over 3 years, per person from outside the UK; healthcare surcharge usually £1,035 a year) — accessed September 4, 2026
- GOV.UK, Skilled Worker visa: your job (general salary threshold £41,700 or the going rate, whichever is higher; reduced floor £33,400 in limited cases) — accessed September 4, 2026
- GOV.UK, High Potential Individual visa: how much it costs (£880 application fee, £252 including VAT for the Ecctis qualification check, £1,270 maintenance funds) — accessed September 4, 2026
- GOV.UK, Innovator Founder visa (£1,357 per person from outside the UK; £1,000 endorsement fee; £500 for each meeting with the endorsing body, at least two required; settlement possible after 3 years) — accessed September 4, 2026
- GOV.UK, Global Talent visa: digital technology (applications endorsed by Tech Nation) — accessed September 4, 2026
- GOV.UK, Apply for an Electronic Travel Authorisation (an ETA lasts 2 years or until your passport expires, whichever is sooner, and allows unlimited journeys) — accessed September 4, 2026
- GOV.UK, Family visa: how much it costs as a partner or spouse (£2,064 from outside the UK, £1,407 from inside) — accessed September 4, 2026
- GOV.UK, Family visa: proving your income as a partner (minimum income requirement £29,000 a year, or qualifying savings) — accessed September 4, 2026
- GOV.UK, Earned settlement consultation (ran 20 November 2025 to 12 February 2026, responses being analysed; proposes raising the default settlement qualifying period from 5 years to 10, with reductions of up to 7 years for Global Talent and Innovator Founder holders and income-based reductions above £50,270 and £125,140) — accessed September 4, 2026
- GOV.UK, Driving in Great Britain on a non-GB licence (checker for how long you can drive and whether your licence can be exchanged) — accessed September 4, 2026
- myTribe Insurance, average cost of private health insurance in the UK 2026 (£82.53 a month for an adult, from 11,770 quotes across seven insurers gathered in March 2026; £82.53 x 1.3530 = $112). Aggregated market data, used because no official UK statistic on private medical insurance premiums exists — accessed September 4, 2026
Your New Country publishes reference information, not tax advice. Tax positions are fact-specific and the penalties for getting a cross-border position wrong are heavier than the fees for getting it checked. Before you file, take advice from an accountant who works both systems, and confirm everything against the UK's tax authority and the IRS, which administers the US rules described here.