The Latest
Where's My Refund? Check Your Refund Status 24/7
Did you know that you can check the status of your refund 24/7 by using Revenue Online?
Small Business Destination Sourcing Exception Ending Soon
Small businesses with less than $100,000 in retail sales need to transition to destination sourcing by February 1, 2022.
When is My Tax Return Due? Check the Tax & Fee Due Date Guide
The Colorado State Tax & Fee Due Date Guide shows filing and payment deadlines for both business and individual taxes.
You Can Now File a Sellers Claim for Refund Online
Rulemaking Announcements
November 5, 2021
On November 5, 2021, the Colorado Department of Revenue, Division of Taxation, announced that it is convening a stakeholder workgroup
October 28, 2021
The Colorado Department of Revenue, Division of Taxation, will hold a public rulemaking hearing on the following sales tax rule at 10:00 A.M.
October 25, 2021
The Colorado Department of Revenue, Taxation Division, will hold a public rulemaking hearing on the following tax rules on November 30, 2021 at 10:00 a.m.
Online Filing Tools
Sales & Use Tax System (SUTS)
Geographic Information System (GIS)
Did you know that DOR has a Free Business Tax Class Webinar?
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