how long do you have to live in a state before you re considered a resident 
many states use the 183 day rule to determine residency for state tax purposes and what constitutes a day varies among states for instance any time spent in new york except for travel to destinations outside of new york e g airport travel is considered a day 6 so if you work in manhattan but live in new jersey you may still be considered a new york resident for tax purposes even if you never spend one night there in addition some states have special agreements whereby a resident who works in another state is only required to pay taxes in the state of their permanent residence or where they are domiciled it is important to consult the laws of each state that you frequent to determine if you are required to pay their income taxes 