Offer your thoughts or opinion on the input financial query or topic using your financial background.

Do I live in a state for tax purposes if my permanent home is in another state?
You're most likely required to file in both for 2013 - since you've lived in both. From 2014 and on you're definitely a NY resident (since you're renting a place there and live there), and you may very well continue being NJ resident (since you're essentially continue being domiciled there). I suggest talking to a EA/CPA licensed in NY and NJ to try and see what you can do to avoid being resident in both the states, or see if it is at all an issue other than filing everything double.