It depends but according to the UT Department of Revenue, you must file a UT nonresident state income tax return if you have income from Utah sources and you must file a federal return.
If you are a permanent resident of CO but were in UT
on a temporary basis and earned income in UT, then you will need to file
an UT nonresident state income tax return (for your UT source income only -
your UT wages). You will also need to file a CO resident state tax return (for
all income from all sources including UT wages). You will get a state income
tax credit in CO for any UT state income taxes that you paid on your
nonresident UT state income tax return.
You
will want to work on your nonresident UT state income tax return first. You
will then take a tax credit from your nonresident UT state income taxes on your
resident CO state income tax return. (Please note that you will only get a tax
credit for your UT state income taxes up to the amount of CO state income taxes
that would have been paid if the income was earned in CO). 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
