U.S. State Taxes for Americans Living in the UK
Moving to the UK ends many financial obligations — but for some Americans, it doesn't end state taxes. A handful of states continue to tax former residents on worldwide income years after they left. This guide explains which states are the problem, how residency works, what ties to sever, and what to do if you've been filing nothing.
In this guide
- The state tax problem
- How residency works
- State categories
- The sticky states
- How to sever ties
- Planning before you move
- State-sourced income
- Missed filings
- FAQ
Key facts at a glance
- Does moving abroad end state taxes? No — you must formally sever ties
- No-income-tax states AK, FL, NV, NH, SD, TN, TX, WA, WY
- Sticky states CA, NY, VA, NM, SC
- California Safe Harbour 546+ days on employment contract
- FEIE recognised by states? Usually no
- Burden of proof On you — not on the state
The state tax problem most expats ignore
Federal taxes get most of the attention in expat tax discussions — and rightly so, since the obligation to file a U.S. federal return follows every American abroad regardless of where they live. State taxes are less prominent, and for good reason: most Americans who move abroad and properly sever ties with their former state have no state tax obligation at all. The problem is the word "properly."
Simply moving to London does not automatically terminate your residency in California, New York, Virginia, or any other state. Residency for state tax purposes is determined by legal concepts — domicile, intent, connections — not just by where you happen to be sleeping. A state does not receive a notification when you board your flight. It still expects a tax return until you demonstrate, through documented action, that you have genuinely left.
For some Americans in the UK, the realisation comes years after arrival: they receive a letter from a state tax authority, or they discover during a mortgage application or a return to the U.S. that state returns were expected and never filed. The problem is not always large financially, but it is always more straightforward to address early than late.
Most Americans who genuinely moved to the UK, established their lives here, and took basic steps to sever U.S. state ties have no ongoing state tax obligation. The issue predominantly affects people who left in a hurry without formally cutting ties, who maintained significant connections to their former state, or who come from one of four states with particularly aggressive enforcement.
How state residency actually works
State tax residency in the United States is based on two overlapping concepts: domicile and statutory residency.
Domicile is your permanent legal home — the place you intend to return to, the state you consider your true residence. You can have only one domicile at a time. Even if you have lived in London for five years, if you still consider a state your permanent home and intend to return eventually, many states will treat you as domiciled there and tax your worldwide income accordingly.
Statutory residency is a separate test based on physical presence. Some states consider you a statutory resident — even if not domiciled there — if you spend more than a set number of days there during the year (typically 183 days) and maintain a permanent place of abode. For Americans based in the UK who visit the U.S. occasionally, statutory residency is rarely the issue; domicile is.
The key point is that domicile is about intent. A state tax authority looking at your situation will ask: where do you consider home? Where do you plan to return? Where are your significant connections? These questions are answered not by where you are, but by the documentary trail you leave behind.
In most states, the burden falls on you to prove you are no longer a resident. The state does not need to prove you stayed — it simply continues to assume residency until you demonstrate otherwise. This is why documentation matters so much, and why "I moved to London three years ago" is not, by itself, sufficient evidence of non-residency.
States: four categories for expats
If you last lived in one of these states, you have no state income tax obligation regardless of ties — there is no state income tax to owe.
Most income-tax states will release you from residency once you have genuinely moved abroad and severed the main connections. Documentation of your move is important but the process is straightforward.
These states challenge residency changes, audit expats long after departure, and tax worldwide income if they determine you haven't properly severed ties.
Even as a non-resident, you generally still owe state tax on income sourced from that state — rental property, a business, or income from a U.S. employer with offices there.
The sticky states: what each one looks for
The Franchise Tax Board (FTB) is one of the most aggressive state tax bodies in the country. California uses a "closest connections" test looking at property ownership, where your family lives, business interests, professional licences, voter registration and driver's licence. California's 546-day Safe Harbour rule allows non-residency if you are outside the state for 546+ consecutive days under an employment contract, with fewer than 45 days return per year and less than $200,000 in California passive income annually. Top marginal rate: 14.4%.
New York uses a domicile-and-statutory test. To change domicile you must establish a new primary home elsewhere and abandon your New York domicile — evidenced by selling or no longer using your New York home as primary residence, changing voter registration, moving business, family and social connections. New York City adds its own income tax. Unlike California, New York does not have a formal safe harbour for expats. Top marginal state rate: 10.9% (NYC adds up to 3.9%).
Virginia applies both a domicile test and a days-based test: spending 183+ days in Virginia and maintaining a place of abode creates statutory residency. Virginia considers factors including where your family lives, your driver's licence, voter registration, and whether you maintain a home in the state. Virginia's approach is somewhat cleaner than California's — genuinely severing ties and establishing clear UK residency tends to resolve the issue. Top marginal rate: 5.75%.
Both states apply domicile-based rules similar to the other sticky states. New Mexico looks at where you maintain a permanent home and intend to return. South Carolina considers your permanent home and significant personal and professional ties. Neither is as aggressively enforced as California or New York, but both have been known to pursue former residents who haven't clearly severed connections. A formal non-residency filing for the transition year is advisable for both.
Handles U.S. state tax returns alongside federal filing for Americans in the UK. Covers sticky state situations, non-residency filings, and state-sourced income reporting in a clean, expat-focused flow.
Visit MyExpatTaxes →How to sever state ties: the practical checklist
Severing state ties is not a single action — it is a pattern of behaviour and documentation that tells a consistent story: you left, you established a genuine life elsewhere, and you do not intend to return to that state as your permanent home.
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1
Establish a new domicile
Your primary home is now in the UK. Register with your local council, open UK bank accounts, get a UK GP. Document your UK life — you need to show not just that you left, but that you arrived somewhere else and built a life there.
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2
Change your driver's licence
Surrender your U.S. state driver's licence or allow it to lapse. Obtain a UK driver's licence. A state licence is one of the most commonly cited indicators of continued residency.
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3
Change voter registration
Cancel your state voter registration or re-register as an overseas voter under federal (UOCAVA) rules rather than a specific state. This removes one of the clearest domicile signals.
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4
Address your property
If you own a home in the state, sell it, rent it out as an investment property, or stop using it as your regular base. Retaining a home you regularly use is one of the strongest indicators of continued domicile — particularly for California and New York.
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5
Move your family
States — especially California — give significant weight to where your spouse and children live. If your family remains in the state while you are in the UK, many states will continue to treat you as a resident.
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6
Close or transfer state accounts and affiliations
Professional licences, club memberships, primary bank accounts, subscription services with state addresses — cancel what you no longer need. What remains should be clearly investment or administrative, not personal.
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7
File a final part-year or non-resident return
For the tax year you moved, file a part-year resident return for your former state. This formally establishes the date you ceased to be a resident and creates a clean record. Skipping this step creates an open question that later attracts scrutiny.
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8
Keep records
Maintain documentation of each step for at least seven years. A well-organised file — UK tenancy agreement, UK bank statements, council registration, change of driver's licence, sale or rental of former home — is your best defence if a state ever challenges your residency status.
Planning before you move: the strategic opportunity
If you are currently in the U.S. and planning a move to the UK, the period before departure is the most valuable window for state tax planning. There is one strategy that is commonly used and genuinely effective: establish residency in a no-income-tax state before leaving.
If you can spend enough time in Florida, Texas, Nevada or another no-income-tax state to establish genuine residency there — obtaining a driver's licence, registering to vote, establishing a mailing address — before your UK move, you create a clean break from a high-tax state. Instead of severing ties with California or New York, you have already severed them by changing domicile within the U.S. first.
This strategy requires genuine intent and genuine action — not just a postal address. States like California actively scrutinise rapid changes of residency shortly before departure abroad, particularly when significant income events are involved. But for someone who has a natural reason to spend time in another state before moving, it can be a significant long-term saving.
The earlier you take action — either by establishing non-residency before leaving or by taking formal tie-cutting steps immediately on arrival in the UK — the cleaner the record. State tax authorities are much more interested in recent departures than in people who have clearly and consistently built a life abroad over many years.
State-sourced income: still taxable even as a non-resident
Even after you successfully establish non-residency in your former state, that state retains the right to tax income sourced within its borders. The most common situations for Americans in the UK:
- Rental property: If you own a rental property in a state, that rental income is state-sourced and taxable to that state regardless of your residency. You will need to file a non-resident state return each year.
- Business income: If you operate a business or partnership with operations in a state, income attributable to that state remains taxable there.
- Remote work for a U.S. employer: Some states attempt to tax wages paid by employers based in that state, even when the employee works in the UK. New York, in particular, applies the "convenience of the employer" doctrine — if you work remotely for a New York employer by choice rather than employer requirement, New York may still claim the income. This is a contentious, fact-specific area.
- Investment income: Dividends and interest from U.S. accounts are generally sourced to where the investor resides — once you are a non-resident, this income is no longer state-sourced. Capital gains on property inside a state are state-sourced.
Matched with a qualified CPA familiar with state tax residency disputes, non-resident filings, and sticky state situations for expats in the UK. Suitable where California, New York or Virginia are involved.
Visit Taxfyle →If you haven't filed state returns since moving
This situation is common. Many Americans move to the UK, focus on the federal return, and simply do not think about state taxes — particularly if they assumed that moving abroad automatically ended any state obligation.
If you come from a no-income-tax state, this is not an issue. If you come from a standard income-tax state and had clearly severed ties, the risk of back-filing obligations is usually low — but a final part-year return for the transition year is still worth filing to create a clean record.
If you come from a sticky state (California, New York, Virginia), the risk is higher. A sticky state may still consider you a resident for the years you were abroad, particularly if you maintained any of the residency indicators listed above. Unlike the IRS Streamlined Procedure, there is no universal state-level amnesty programme for expats — each state has its own procedures. A tax professional experienced in multi-state expat situations can assess your exposure and advise on the best path forward before you take any action.
Handles federal and state returns from a single platform for Americans abroad. Suitable for straightforward non-resident or part-year state filing situations. Complex sticky state disputes are better handled by a specialist CPA.
Visit TurboTax →State taxes are the part of U.S. expat tax compliance that most people don't discover until something goes wrong — a notice from Sacramento, a surprise liability uncovered during a return to the U.S., or a mortgage application that suddenly requires years of state returns. The rules are not obvious, the burden is on you to prove you left, and the states with the most to gain are also the most motivated to pursue it.
What makes this genuinely difficult is that the solution isn't complicated in principle — it's just easy to leave undone. Changing a driver's licence, updating voter registration, filing a final part-year return: none of these are hard. But they require deliberate action at a point when most people are focused on the logistics of an international move, and the consequences of inaction don't usually appear for years.
If you haven't yet addressed your former state, the best time to do it is now — before a state decides to do it for you.
Disclaimer: This guide is for general information only and does not constitute tax, legal or financial advice. State tax residency rules vary significantly across U.S. states, change over time, and depend heavily on individual facts and circumstances. Always consult a qualified tax professional familiar with your former state before making decisions about residency status or filing back returns. Information is believed accurate as of March 2026.
Frequently asked questions
No. Moving abroad does not automatically terminate state residency. States determine residency based on domicile and intent, not physical location. To end your state tax obligation you need to formally sever ties — and in some states, file a part-year return for the year you left. Simply living in London for several years is not, by itself, legally conclusive evidence that you have changed your domicile.
It depends on whether you have genuinely severed California ties. California uses a "closest connections" test looking at property, family location, driver's licence, voter registration, business interests and professional licences. If you have clearly established your life in the UK and removed the main California connections, you can become a non-resident. If you maintained significant ties — a home you use when visiting, family who stayed behind, or business interests — California may still consider you a resident. California's 546-day Safe Harbour applies specifically to employment contract arrangements.
Usually not. Most states do not recognise the federal Foreign Earned Income Exclusion. If a state still considers you a resident, it typically taxes your worldwide income under its own rules — the federal FEIE does not carry through. Similarly, most states do not allow a Foreign Tax Credit for UK taxes paid, meaning state-level double taxation is a real possibility for Americans who remain resident in high-income-tax states while living in the UK. This is one of the main financial arguments for formally severing state ties.
Potentially yes. New York applies the "convenience of the employer" doctrine, which means that if you work remotely from the UK for a New York employer by your own choice rather than because the employer required it, New York may still treat that income as New York-sourced. This is a contentious area and has been the subject of significant litigation. If your remote work from the UK was required by your employer rather than chosen by you, the income may be treated differently. This is a fact-specific situation where professional advice is important.
Yes. Even as a non-resident, income sourced from within a state — including rental income from property located there — is generally taxable to that state. You would need to file a non-resident state return each year reporting the rental income. Owning rental property as an investment, where you do not use it as a personal residence, does not by itself create domicile in that state — but it does create an ongoing filing obligation.
The right answer depends on which state you're from, whether you severed ties when you left, and what income you had in subsequent years. If you're from a no-income-tax state, there's nothing to worry about. If you're from a standard income-tax state and clearly left with no remaining ties, the risk is generally low — but a retrospective part-year return for the transition year would create a clean record. If you're from a sticky state, particularly California or New York, a professional assessment is strongly recommended before you take any action, including simply filing back returns, as this could trigger an audit.
For people leaving a high-tax sticky state, it can be. Establishing genuine residency in Florida, Texas, Nevada or another no-income-tax state before your UK move creates a clear break from the previous state. The key is "genuine" — you need to establish real ties in the new state, not just a postal address. States like California actively scrutinise rapid domicile changes before departure, particularly when significant income events coincide. For someone with a natural reason to spend time in a no-income-tax state before leaving, the planning opportunity is real.
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