
State tax for US expats does not always end when you move abroad. How "sticky" states like California and New York keep taxing you, and how to sever residency.
State tax for US expats does not automatically end when you move abroad. "Sticky" states — notably California, New York, Virginia and New Mexico — apply a domicile test and can keep taxing you overseas until you clearly sever residency. The federal Foreign Earned Income Exclusion does not help at state level.
For a high earner who has just left California or New York for London, Dubai or Singapore, this is the detail that quietly costs the most. You can correctly file your federal return, exclude foreign earnings, and still receive a state assessment years later because, in the state's eyes, you never actually left. This article explains why that happens and how to establish that you have genuinely severed state residency. It is general guidance, not advice on your own facts, which is where the real decisions are made.
Most states tax their residents on worldwide income, and "resident" is defined far more broadly than "person currently living here." The key concept is domicile — your one true, permanent home, the place you intend to return to. You can be physically in Dubai for years yet remain domiciled in California if the state concludes your absence is temporary and your real home never moved.
That is the trap at the heart of state tax for US expats. A domicile continues until you replace it with a new one, which requires both actually settling somewhere else and intending to make it your permanent home. Simply flying out with a one-way ticket does not sever it if you keep the house, the licence and the accounts that say your life is still rooted in the old state. High-tax states have every incentive to read an ambiguous move as a temporary one.
A handful of states are notorious for holding on. California treats you as a resident while you are outside the state for a temporary or transitory purpose, and it examines the closeness of your connections to decide. New York runs both a domicile test and a statutory-residence test and is well known for auditing departures aggressively. Virginia and New Mexico similarly apply domicile-based rules that can keep a mobile professional on the hook after a move overseas.
Domicile is not about a rulebook of days alone; it is about intent evidenced by facts. States look at where your permanent home is, where your family lives, where your most valuable possessions are kept, and where your civic and financial life is centred. No single item settles it — the authorities weigh the whole picture, which is exactly why a clean, deliberate break matters so much. California's own Franchise Tax Board publishes detailed residency guidance that shows how many factors it considers (ftb.ca.gov), and New York's Department of Taxation and Finance takes a comparably thorough approach (tax.ny.gov).
Severing residency means changing your domicile and then removing the ties that suggest the old state is still home. The move has to be real and, ideally, permanent or indefinite — a genuine relocation of your life, not a posting you plainly intend to reverse. Practically, that involves establishing a settled home abroad and moving the centre of your personal and financial world there.
The evidence you build matters as much as the move itself. States decide these cases on the totality of the facts, so a documented, consistent story is your best protection:
The factors that catch people out are usually the ones they thought were harmless conveniences. Keeping the family home "just in case" is the classic example: an available, unrented residence in the old state is powerful evidence that you always intended to return. A retained driving licence and active voter registration send the same signal, cheaply and in writing.
Other common anchors include a US bank listing the old state as your address, storing your most valuable belongings there, keeping children in a local school, and continuing memberships or professional registrations. None is fatal on its own, but together they build the picture the state wants to see. The goal is to remove ambiguity, so that a reviewer looking at your affairs reaches only one conclusion about where you now live.
Many expats assume that because the Foreign Earned Income Exclusion wiped out their federal liability, the state follows suit. It does not. The FEIE and the foreign tax credit are creatures of federal law, and states are free to ignore them — and sticky states generally do. If California still regards you as a resident, income you excluded on your federal return can be fully taxable in California, with no equivalent relief.
This is the single most expensive misunderstanding in state tax for US expats. It means the federal expat toolkit, however well used, does nothing to solve a state residency problem. The only reliable fix at state level is to stop being a resident — which brings the whole question back to domicile and the quality of your break. If your federal filings are also behind, our guide to missed US tax returns is a sensible companion read, because the state and federal positions should be corrected together.
If you are planning a move, treat the state exit as a project of its own rather than an afterthought to the international one. Decide clearly where your new domicile will be, make the move genuine, and assemble the evidence contemporaneously — the tenancy or purchase abroad, the licence change, the closed registrations, the moved accounts — rather than reconstructing it under audit years later. Where a state offers a part-year return for the year of departure, file it correctly to mark the break.
Because California and New York in particular are known to challenge departures, this is an area where careful, documented planning pays for itself many times over. At Next Tax Source, our cross-border team coordinates your federal and state positions, and a CPA or Enrolled Agent reviews and signs off every filing before you rely on it. If you need to clean up prior years while you are at it, the IRS Streamlined Foreign Offshore Procedure is often the right federal route. To plan a clean exit, start with our US–UK expat tax service, or book a consultation to map your own situation.
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Reviewed by a CPA / Enrolled Agent. This article is general information for planning purposes, not advice on your specific facts; state residency rules vary and change, so confirm your own position with a professional before acting.
Last updated: 19 August 2026.
Official sources: California Franchise Tax Board · New York Department of Taxation and Finance · IRS — Foreign Earned Income Exclusion · IRS — US Citizens and Resident Aliens Abroad