If you are a permanent resident of NY but you have earned income in CT, then you will need to file
a CT nonresident state income tax return (for your CT source income only -
your CT wages). You will also need to file an NY resident state tax return (for
all income from all sources including CT wages). You will get a state income
tax credit in NY for any CT state income taxes that you paid on your
nonresident CT state income tax return.
You
will want to work on your nonresident CT state income tax return first.
Some additional information about NY state income
taxes:
NY
taxes all the income reported when calculating NY state income taxes (whether
resident, part-year resident or nonresident) but you will only be required
to paid a portion of the total NY state income taxes calculated (your
percentage of the total NY tax that relates to your NY source income only)
The
way that the NY state income tax return works is that NY looks at all of your
income from all sources and generates a total NY state income tax on all
income. When NY is determining the actual NY state income taxes that you
owe, NY multiples the total NY taxes on all income by the percentage of NY
source income over all source income. For NY residents, all income from all sources will be taxed on your NY resident state income tax return.
So if all your income is from CT, then your total CT income and your NY income could be the same amount.
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
