How are you suppose to file your taxes if you have worked in two different states in one year?

Answer 1

File your federal taxes once and your state taxes in each state you worked.

Answer 2

Your Federal taxes aren't affected by this. State taxes are.

You'll file a normal return in the state of your residence and generally a non-resident return in the state where you worked as a non-resident. The state where you worked as a non-resident is entitled to tax the income you earned in that state only. The state of your legal residence is entitled to tax your entire income but in virtually all cases will give you a credit for the taxes paid to the other state.

If you moved between states, the rules are muddied a bit -- generally each state will only tax the income you earned while a resident of that state regardless of where it was earned. You may be required to file as a "part year" resident or even as a non-resident for the year where you had two domiciles.

In any case, you'll have to carefully review the rules and filing instructions for both states before you file your returns.

Answer 3

Federal tax includes all income (no matter what state earned in) so would file it as usual - sending to IRC center for your current resident state. You will file two state taxes - both as part year resident (assuming you established residences in each state; otherwise, you may be filing as non-resident).