Day 6 of Grant Thorntons Top 10 Year-End Tax Planning Tips you shouldn't ignore. Take a Closer Look at Your State Residency Status
For individuals who split their time in two different states throughout the year, now is an excellent time to consider where you may be taxed as a resident for 2015. To make it more likely that the high-tax jurisdiction will respect the move and not continue to tax you as a resident, you should track the number of days you are spending in each jurisdiction. Generally, if you reside in a state for 183 days or more, that state will assert residency and the ability to tax all of your income. Furthermore, if you move to a new state but you maintain significant contacts with the old state (including driver’s license, residences, bank accounts and the like), you could run the risk of being taxed as a resident in the old state.