It depends.
If you have 2 W-2s for the same income and one shows federal amounts with one state and the other just shows the state amount only, then you will just add a state line to your W-2 entry (with the federal information) under the federal taxes tab when you are entering the state information from your second W-2 (screenshot)
If these are 2 separate W-2s related to 2 separate federal income and state amounts, you will need to enter them separately.
If you are a permanent resident of NC but were in SC
for school and earned income in SC, then you will need to file
a SC nonresident state income tax return (for your SC source income only -
your SC wages). You will also need to file a NC resident state tax return (for
all income from all sources including SC wages). You will get a state income
tax credit in NC for any SC state income taxes that you paid on your
nonresident SC state income tax return.
You
will want to work on your nonresident SC state income tax return first. You
will then take a tax credit from your nonresident SC state income taxes on your
resident NC state income tax return. (Please note that you will only get a tax
credit for your SC state income taxes up to the amount of NC state income taxes
that would have been paid if the income was earned in NC). The credit for
taxes paid to another state section will be at the end of your residence
state's interview process.
Just
follow the TurboTax guide when working on your states (remembering to do your
nonresident state return first) and TurboTax will do all the calculations and
credits to your resident states return
Here
is additional information about filing in multiple states (select "see
more answer" to view the entire attachment)
https://ttlc.intuit.com/replies/3300797
