State Residency and IRS Residency Are Not the Same Thing
You can be a nonresident for the IRS and a resident of your state at the same time. Domicile, the 183-day rule, and why your visa status is no shield against state tax.
State Residency and IRS Residency Are Not the Same Thing
One of the costliest myths among people who move to the US goes like this: "I'm a nonresident, so I only pay tax on my US income." That statement is about the federal level — and it tells you nothing about your state.
Federal residency and state residency are determined under different rules, by different agencies, and with different consequences. A person can be a nonresident alien for the IRS and, at the same time, a full-fledged resident of a state, obligated to report worldwide income.
How the IRS decides
At the federal level, your status is set by one of two tests:
The test has exceptions: F-1 students and J-1 teachers count as "exempt individuals" for a set period and do not count their days at all. That is exactly why a student can live in the US for years and remain a nonresident alien for the IRS.
How the state decides
The state does not care what your visa says. It looks at two concepts of its own.
Domicile. This is your permanent home — the place you intend to return to. You have only one domicile. It does not change because you left on a business trip, went away to study, or spent the winter in Florida. To change your domicile, you have to physically move and also demonstrate that you do not intend to return.
Statutory residency. Even without a domicile there, a state will treat you as a resident if you both maintained a permanent place of abode in the state and spent enough days there. The thresholds differ:
| State | Threshold |
|---|---|
| New York | permanent place of abode for substantially all of the year + 184 days in the state |
| New Jersey | permanent place of abode all year + more than 183 days |
| Pennsylvania | permanent place of abode + 183 days or more |
| Maryland | place of abode for more than six months + physical presence of more than 183 days |
| Arizona | more than nine months in the state in total — presumption of residency |
| Colorado | permanent place of abode + more than six months |
Note this: in New York, any part of a day counts as a day, and you do not have to be in your own apartment — being anywhere in the state is enough.
Where it hurts the most
Situation one. A person on a work visa is in their second year of living in New Jersey. For the IRS they are already a resident under the presence test — that is a separate conversation. But even if they remained a nonresident at the federal level, New Jersey treats them as its own resident and taxes worldwide income, including interest on a bank deposit back in their country of origin.
Situation two. An F-1 student in New York. For the IRS, an exempt individual who files Form 1040-NR. But if that student rents an apartment and spends more than 183 days in the state, the question of state statutory residency comes up. A special rule saves them: undergraduate students who are not domiciled in New York and attend full time are not treated as statutory residents — a dorm room does not count as a permanent place of abode. For graduate students and for anyone renting an apartment, that protection is far less obvious.
Situation three. A family moved from California to Texas but kept the house in California and keeps flying back. California will examine whether the abandonment of domicile was real.
What the state does when it has doubts
A residency review is not about the return, it is about evidence. States look at:
Washington deserves a separate note: there is no income tax there, but the state does have its own list of residency indicators — and it affects other state taxes.
What to do about it
Sources
Federal rules — IRS Publication 519, U.S. Tax Guide for Aliens. State rules — the return instructions on the agencies' websites: tax.ny.gov, nj.gov/treasury/taxation, pa.gov/agencies/revenue, azdor.gov (A.R.S. §43-104), tax.colorado.gov.
If you arrived recently and are not sure what status you are filing under or which state you owe, book a consultation — we will sort out both levels at once, federal and state.
