Related Information
Question: Am I required to file an individual income tax return?
You must file a Colorado income tax return if during the year you were:
  • A full-year resident of Colorado, or
  • A part-year resident of Colorado with taxable income during that part of the year you were a resident, or
  • A nonresident of Colorado with Colorado source income;

    AND
  • You are required to file a federal income tax return, or
  • You have a Colorado income tax liability for the year.

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