Lived part time in NJ and NY

[Nelestjulval]

I lived 9 months in NJ and 3 months in NY during 2023. How do I file my taxes?

Do I have to file as part time resident on both states and also as par time non- resident on both ?

I am a little confused.

Also the W2 copy of NJ doesn't have any taxes withheld.

[DMarkM1]

Yes.  You'll file part-year resident returns in both states and the nonresident periods will be handled within those returns.  

In the "My Info" section, edit your personal information and indicate which state you lived in on 31 Dec 2023.  Then answer, "Yes" you lived in another state and select the prior state from the list.  Enter the date you moved to your new state.

After entering your income and deductions in the federal interviews you can start the state returns.  You will allocate your income in each state's interview based on where you resided when you received the income.  

It is strange that zero was withheld for NJ so you likely will owe taxes there.  Be sure to check with your current employer to get withholding started for the correct state going forward.

[Nelestjulval]

So, If I understood correctly, I do not need to file part time "non resident" taxes for NJ or NY.

Wouldn't  each state want to tax during the Nonresident periods ?

[TomK2023]

No, you will only need to file a part-year resident tax form for both states.  Be sure to finish filing out the tax form for the state you moved from first, then proceed to your current state's tax return.  

[Nelestjulval]

I actually had already done NY state return first which is the State where I movee to from NJ.

Would I need to delete it and do NJ first ?

[AmyC]

You said the w2 shows no NJ income but that doesn't convince me that is the case. Not knowing about your income, you may need to file a NJ NR form in addition to the resident form. See page 4 of 
Nonresident Income Tax Return Instructions for your situation. Whichever state has the income and creates the tax liability should be done first and then the state that will credit the amount should be entered.