You might need to file a Colorado tax return if your social security was taxable, since you received some while a Colorado resident.
You must file a Colorado income tax return you were a part-year resident of Colorado with taxable income during that part of the year you were a resident
AND
you are required to file a federal income tax return, or you have a Colorado income tax liability for the year.
If you know that you do not have to file the Colorado tax return, you can choose not t download it.
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