Every year I have several people ask me how to file their taxes if they lived and worked in two different states over the course of the year. The issue arises from the fact that each state appears to tax you based upon the entire income you report on your Federal 1040, thereby resulting in you being double taxed.
Of course, that’s not really the case. For each state, there’s generally a form you need to fill out that allows you to account for the fact that only part of your income for the year was earned while working in that state. The final result from that extra form will be the amount of income you earned while working in that state. This amount will be entered on your state 1040, and this is the amount that the state will tax you on.
So how do you know the name of the extra form you need to fill out? It will tell you on your state 1040. Phrases to look for include “part-year resident” or “[name of state] income percentage.”