The Latest

Looking for Tax Credit Information? The Tax Navigator Can Help

Woman looking through binoculars while hiding behind a houseplant

The Tax Navigator will guide you to information about the Federal Child Tax Credit, PTC Rebate, commonly claimed Colorado income tax credits, and much more.


  Tax Navigator

Small Business Destination Sourcing Exception Ending Soon

Small Business Owner Filing Orders

Small businesses with less than $100,000 in retail sales need to transition to destination sourcing by February 1, 2022.


Transition to Destination Sourcing Information

When is My Tax Return Due? Check the Tax & Fee Due Date Guide

Person Shrugging

The Colorado State Tax & Fee Due Date Guide shows filing and payment deadlines for both business and individual taxes. 


View the Tax & Fee Due Date Guide

Businesses Can Now File a Sellers Claim for Refund Online

Businesswoman working on her computer

You can use Revenue Online to file a Sellers Claim for Refund for a variety of tax types. Filing online saves mailing time and reduces errors.  


Learn How to File a Sellers Claim for Refund

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.

Online Filing Tools

Revenue Online (ROL)

File state taxes and manage your state tax account

Visit ROL

ROL Help

Sales & Use Tax System (SUTS)

State-administered and home rule sales and use tax filing

How To Get Started

Log In

Geographic Information System (GIS)

Look up sales and use tax rates by address or map location

Look Up Rates

GIS Help

Did you know that DOR has a Free Business Tax Class Webinar?

  Sign Up & Learn More

Open Embed