State tax filing

Thank you for your very prompt reply!

 

If I did have income during January and part of February of this  year, then I will have to report that to NH for the 2024 tax year?

 

Does the notification of the IRS about a change in mailing address play any role as to when I took up residence in NJ for tax purposes?  What is the trigger for the start date of my NJ residence for tax purposes - move-in date or decision to reside in the state?