New Jersey Tax Residence: the rule, how days are counted, examples

Summary

New Jersey treats you as a resident for its Gross Income Tax, even when your domicile is in another state, if you maintain a permanent home in New Jersey and spend more than 183 days of the calendar year in the state. The 184th day crosses the line. A resident is taxed on income from all sources, inside and outside New Jersey. A nonresident is taxed only on New Jersey income. The New Jersey Division of Taxation applies the test. Members of the Armed Forces are covered by separate federal rules.

Limit: More than 183 days in New Jersey (the 184th day crosses the line)
Period: The tax year, for most people 1 January to 31 December
A day counts when: The law gives no definition, the careful count is any part of a day
Second condition: A permanent home in New Jersey
Law: N.J.S.A. 54A:1-2(m), New Jersey Gross Income Tax Act
Run by: New Jersey Division of Taxation

Who it applies to

People domiciled in New York or Pennsylvania who own a house at the Jersey Shore that can be lived in all year.
People who moved their domicile to Florida and kept a home in New Jersey near their family.
People from other states or countries who take an open-ended lease in New Jersey for work.
Couples where one spouse has moved away for work and the other stays in the New Jersey house.

The rule

The New Jersey Gross Income Tax Act defines a resident taxpayer in N.J.S.A. 54A:1-2(m). The Division of Taxation explains it in its bulletin GIT-6, revised in May 2026. If New Jersey is your domicile, which means the place you consider your permanent home and intend to return to, you are a resident. If New Jersey is not your domicile, you are a resident only if you maintain a permanent home in the state and spend more than 183 days there.

GIT-6 defines a permanent home as a residence that you maintain permanently as your main home, whether or not you own it. A home is not permanent if you maintain it only for a temporary period to do a specific thing, such as a temporary job assignment. The instructions for Form NJ-1040 add that a home used only for vacations is not a permanent home.

Both conditions must be met. The Division states the other side as well: you are a nonresident if New Jersey was not your domicile and you spent 183 days or fewer in the state, or if you spent more than 183 days there but did not maintain a permanent home in the state. So many days without a permanent home do not make you a resident, and a permanent home with few days does not either.

People domiciled in New Jersey are tested differently. They stay residents unless they have no permanent home in New Jersey, have a permanent home outside the state, and spend not more than 30 days in New Jersey. The Division looks at the facts of each person, and where domicile is in doubt it considers things such as where you vote, your driving licence, family ties and the address on your federal return.

Why it exists

New Jersey sits between New York City and Philadelphia, and many people have homes or jobs on both sides of the state line. Domicile alone is easy to argue about. The state uses a permanent home plus more than half of the year as a second, more factual way to decide who should pay tax on all their income and who should pay only on income earned in New Jersey.

Counting the days

You count the days of the tax year that you spent in New Jersey. The official guidance does not say how to treat a part of a day, so the careful way is to count every day on which you were in the state at all.

Decide whether you maintain a permanent home in New Jersey: a residence kept permanently as a main home, not a temporary place for one assignment and not a place used only for vacations.
Mark each day from 1 January to 31 December on which you were in New Jersey.
Include the days you arrived and the days you left, to stay on the safe side.
Add up the days. 183 or fewer means the day condition is not met.
If the total is 184 or more and you have the permanent home, treat yourself as a resident and report income from all sources.

How Countr counts it. Countr counts every calendar day on which your phone was in New Jersey at any time, from 1 January to 31 December, against a limit of 183 days. That is the careful reading, because the New Jersey guidance does not define a day. It means days when you only drove through, for example on the New Jersey Turnpike between New York and Philadelphia, are counted too. Countr cannot see whether you maintain a permanent home in the state, so add this tracker only if you do.

Track New Jersey Tax Residence on your phone.

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Examples

A shore house used most of the year

Vera is domiciled in Philadelphia and owns a house in Cape May that she keeps all year and lives in for long periods, not only for vacations. In 2026 she is there from 15 April to 15 October without leaving. That is 16 days in April, 31 in May, 30 in June, 31 in July, 31 in August, 30 in September and 15 in October, a total of 184. With a permanent home and more than 183 days she is a New Jersey resident for 2026.

Many days, no permanent home

Sam is domiciled in Manhattan and works at an office in Newark on 220 days in 2026. He goes home every evening and has no home in New Jersey. He spent more than 183 days in the state, but without a permanent home there he is a nonresident. He files Form NJ-1040NR for his New Jersey wages.

A temporary assignment

Lena is domiciled in Georgia. Her company sends her to Princeton for a project from 1 February to 30 November 2026, and she rents a furnished flat for those months only. She spends 250 days in New Jersey. The flat is kept only for a temporary period to do a specific thing, so GIT-6 does not treat it as a permanent home. She is taxed as a nonresident on her New Jersey income.

Exceptions

For members of the military and their spouses, New Jersey follows the federal Servicemembers Civil Relief Act and does not use the ordinary test. The statute excludes members of the Armed Forces from the 183-day rule.
A home kept only for a temporary period to accomplish a particular purpose is not a permanent home.
A home used only for vacations is not a permanent home, according to the Form NJ-1040 instructions.
A person domiciled in New Jersey with no permanent home in the state, a permanent home elsewhere and not more than 30 days in New Jersey is treated as a nonresident.
Pennsylvania residents who had New Jersey tax withheld from their wages file a nonresident return to get it back. That is a separate matter and does not change the residence test.

Common misconceptions

“I work in New Jersey more than 183 days, so I am a New Jersey resident.”: Not without a permanent home in the state. The Division says a person who spends more than 183 days in New Jersey but has no permanent home there is a nonresident.
“My beach house makes me a resident as soon as I own it.”: Owning a home is only one condition. You also need more than 183 days in the state. And a home used only for vacations is not a permanent home at all.
“New Jersey has a part-year resident return for this.”: There is no separate part-year form. A person who was a resident for part of the year reports that period on Form NJ-1040 and, if needed, New Jersey income from the other period on Form NJ-1040NR.
“Being domiciled in New York means New Jersey can tax only my New Jersey salary.”: If you meet the permanent home and 183-day test, New Jersey taxes you as a resident on income from all sources, whatever your domicile is.

Questions and answers

Is 183 days in New Jersey over the limit?

No. The Division says a person not domiciled in New Jersey who spent 183 days or less in the state is a nonresident. The test needs more than 183 days, so day 184 is the one that counts.

Does New Jersey count a part of a day as a day?

The bulletin GIT-6 and the return instructions do not define a day. Neighbouring states with the same kind of test count any part of a day, so the careful approach is to count every day on which you were in New Jersey.

What does New Jersey mean by a permanent home?

A residence that you maintain permanently as your main home, whether or not you own it. A place kept only for a temporary purpose and a home used only for vacations are not permanent homes.

Which form do I file if I become a resident under this test?

Residents file Form NJ-1040 and report income from all sources. Nonresidents with New Jersey income file Form NJ-1040NR.

Can I be taxed as a resident by New Jersey and by my home state?

Yes. Your home state can treat you as a resident because of domicile, and New Jersey because of the permanent home and the days. Each state applies its own law, and credits for tax paid to another state depend on the rules of each state.

Do days I commute through New Jersey to another state count?

The New Jersey guidance does not give a transit rule. If you rely on leaving such days out, keep records that show you only passed through, and expect that the Division will look at the whole situation.

Sources

Other rules for United States

Arizona Tax Residence 273 days in each calendar year
California Tax — Visitors 181 days in each calendar year
California Tax Residence 273 days in each calendar year
Connecticut Tax — 30 Days or Fewer 30 days in each calendar year
Connecticut Tax Residence 183 days in each calendar year
Delaware Tax Residence 183 days in each calendar year
Hawaii Tax Residence 200 days in each calendar year
Idaho Tax Residence 270 days in each calendar year

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This page explains the rule and how the days are counted. It is not legal or tax advice. The authority decides each case on its own facts.