I won money at an indian casino in colorado. I live in Arizona. Do I need to file a colorado state tax return

[HelenaC]

Yes, you do. Gambling winnings are taxable Colorado-source income and you will need to complete a Colorado non-resident income tax return. TurboTax will ask you a series of questions to determine the amount taxable.

You will be able to claim a credit on your AZ return for any taxes paid to CO on your non-resident return. 

 We recommend that you prepare the non-resident state income tax return first in order for TurboTax to properly calculate the taxes paid to other states credit.  This credit prevents you from paying double taxation. Click on How do I file a nonresident state return?

Related information:

• Can I deduct my gambling losses?
•  When would I have to file returns in more than one state?