New Jersey Tax Residency (183-day rule)

Key parameters
Threshold	183 days
Period / Window	Tax year (1 Jan – 31 Dec)
Counting	Any part of a day
Alternative	Domicile
Additional requirements	Permanent home in New Jersey

This applies to anyone with a home available to them in New Jersey, whatever state they treat as their own. You are a New Jersey resident if either of these applies:

• Domicile — New Jersey is your permanent home, the place you intend to return to whenever you are away.
• Statutory residency — you are domiciled elsewhere but keep a permanent home in New Jersey and spend more than 183 days in the state.

A statutory resident is taxed exactly as a domiciled resident would be, for the whole year, on income from every source. Intent plays no part in it: the test is a home plus a day count.

What makes a home permanent is its purpose rather than its size or value. A place kept only for a temporary period to accomplish a particular purpose, such as a fixed-term job posting, is not permanent, and a home used only for vacations is not permanent either.

The rule also runs in reverse. Someone domiciled in New Jersey who keeps no permanent home in the state, maintains one outside it, and spends no more than 30 days there is treated as a nonresident for that year.

• Two states can tax you as a resident in the same year. Statutory residency in New Jersey leaves your domicile elsewhere untouched, so both can charge you as a resident, with credits closing only part of the gap.
• A vacation home does not trigger it. A property used only for vacations is not a permanent home, so a summer place at the shore does not by itself expose you to the test.
• A posting with an end date is not a permanent home. Accommodation taken for a temporary period to accomplish a particular purpose falls outside the definition, which is what separates a secondment from a relocation.
• Leaving needs more than staying away. Someone domiciled in New Jersey must also give up any permanent home in the state and hold a permanent home elsewhere before the 30-day route is available.
• There is no part-year resident return. A year split between residence and nonresidence is reported across two separate forms rather than one.

A statutory resident is taxed as though domiciled in New Jersey for the entire year on income from all sources, so an error usually surfaces as out-of-state income never reported to New Jersey while the home state taxed the same earnings. The Division charges interest from the original due date and adds penalties for filing late and for underpaying, with higher exposure where the omission is treated as deliberate. Professional tax advice is strongly recommended in situations like this.

A commuter with an apartment

You are domiciled in Pennsylvania, rent a New Jersey apartment on a rolling lease, and are in the state most working days. The permanent home is in place and the count passes 183 days, so you are a New Jersey statutory resident.

A shore house used for summers

You live in New York and own a beach house in New Jersey used only for vacations, spending around 60 days there. A vacation-only property is not a permanent home, so the statutory test cannot attach whatever the count.

Someone domiciled there who moves out properly

You are domiciled in New Jersey, sell your house, buy a home in Florida, and return for about 25 days in the year. With no permanent home in the state, a permanent home outside it, and fewer than 30 days, you are a nonresident.

• New Jersey Division of Taxation — NJ-1040 resident return instructions
• New Jersey Division of Taxation — Income tax information