If you paid taxes to a state other than Colorado during the year, you may receive a tax credit on your Colorado state taxes. That way, you won't be taxed twice on the same income.
When going through the Colorado state interview in TurboTax, you will come to a screen titled Take a look at Colorado credits and taxes. Scroll down to Other Credits - Other State Tax Credit and click on Start next to that topic.

**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"