Its obvious to me that many of you having this issue work at a large drug store chain located in RI. They prepare their W-2's incorrectly, and have done so for some time.
In my case, I live in MA and work in CT. This employer lists the same income twice on their W-2, once for your home state, and again for the state you work in. TurboTax will add them together on your home state return (MA in my case). TurboTax is working correctly - it's the W-2 that is incorrect. You have two options:
1. If the amounts in box 16 are the same, simply do not enter the line for your home state in TurboTax. MA will tax all of the income from the non-resident state, which is correct, and should represent all of your income. And you will get a credit for taxes paid to the non-resident state.
2. If the amounts in box 16 for the two states are not the same (usually, they should be the same) - then your W-2 is potentially wrong (this has happened to me, where they forgot to include stock vesting in my home-state income, but did include it in my working-state income). You will need a new W-2.
