DOR Taxation web site

Tax Information

The Colorado Department of Revenue provides information on a variety of Colorado tax topics.


Tax Information Index: Find tax information sorted by tax topic.


FYI Publications: There are more than 180 FYI tax publications that cover sales tax, income tax, withholding tax, excise tax, and general topics. 
Videos:  Watch video clips about commonly-asked questions and issues.

Tax Workshops and Education Sign up for a class, take a class online, or view class content in PDF format.