Education

That depends.

How you file state tax returns depends on several circumstances. 

(Military members have their own requirements unique to them)

Let's break it down.

First, as a student, if someone else claims you as their dependent, you are a resident of the same state as the taxpayer who claims you. 

(For example, parents live in California and dependent child attends school in Wisconsin. That child/student is a resident of California and may or may not need to file both California and Wisconsin depending on income sources.) 

When a student is NOT a dependent, they must determine their- 

• DOMICILE:     Permanent legal residence/ permanent home where you intend to return to after a temporary move, such as for schooling.
• PLACE OF ADOBE:     Location of housing, no matter if owed or rented.

The fact that you still have a New Jersey ID is irrelevant. If you no longer have a place in New Jersey to return to, you cannot be "domiciled" in New Jersey.

If you are DOMICILED in New Jersey-

You file as a Resident of Connecticut if you lived there more than183 days. (your place of adobe)  

You file as a Part-Year resident of Connecticut for the year you moved there but did not stay more than 183 days

You ALSO file as a resident of New Jersey unless:

          1. You did not maintain a permanent home in New Jersey; 

          2. You maintained a permanent home outside New Jersey; and 

          3. You did not spend more than 30 days in New Jersey.

New Jersey link on Understanding Income Tax

If you do need to file both state returns, enter the Part-Year temporary state first,  (Connecticut) then your Resident state (New Jersey). On the New Jersey Resident return, you will claim all your income but will also get a credit for the tax paid to Connecticut on the income earned in Connecticut. 

If you were not domiciled in New Jersey (and did not earn income attributed to that state) you needn't file a New Jersey tax return. 

Instructions for CT-1040 NR/PY

Non-Resident and Part-Year Resident Information Connecticut 

New Jersey Tax Credit for taxes paid to another state 

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