Do expats pay state taxes?
Leaving the United States ends your connection to a state only if you actually broke it. States do not follow the federal rules here, they do not care that you qualified for the foreign earned income exclusion, and several take the view that you remain a resident until you prove otherwise.

Domicile is not the same as residence
Residence is where you are. Domicile is where your permanent home is considered to be — the place you intend to return to. You can have several residences; you have one domicile, and it persists until you establish a new one somewhere else.
This is the whole difficulty. Moving abroad changes where you live immediately. It changes your domicile only if you took the steps that establish a new permanent home and gave up the old one.
What states actually look at
No single fact decides it. States weigh a pattern, and the common factors are consistent enough to list:
Property. A home kept available for your use in the old state weighs heavily against you, particularly if it is not rented out.
Licences and registration. A driver's licence, vehicle registration and voter registration all point at continuing domicile.
Financial ties. Bank accounts, a mailing address used as your own, and professional licences kept current.
Family and time. Where your immediate family lives, and how many days a year you spend in the state.
Some states are harder to leave
A handful of states are widely regarded as difficult to break from — California, New York, Virginia, New Mexico and South Carolina among them. That reputation comes from how they apply the domicile test and how willing they are to challenge a departure, not from a different rule in the statute.
At the other end, states with no personal income tax leave nothing to break. If your last state was one of those, this is usually a short conversation.
What breaks the connection
Consistency, evidenced. Changing the licence, the registrations, the voter roll and the mailing address; closing or relocating what can be relocated; and being able to show a permanent home abroad. Doing three of those and leaving the house available is the pattern that goes wrong.
Timing matters too. A part-year return is usually required for the year you leave, and the date you claim the change took effect needs to match what the paperwork shows.
State domicile rules are set by each state and vary; the factors above are those common to most. Directional only — a specific state's position depends on its own statute and case law. Checked 13 September 2026.
Still tied to a state you thought you left?
Worth checking before the year closes, while the facts can still be changed.