I've lived in TN almost the full year and did my taxes there as well (got a refund).
I told turbotax I moved to SC in 12/2020 and my W2 is proof of it.
The problem is when I did my SC state taxes it transferred all my federal income as my year income to add to my state income, then it gave a totally different result from that point on.
Not sure if it's a bug in the software or some kind of tax mandate, other states don't do that, so I feel cheated on by the state.
