Geographic Information System is Online and Available

Colorado retailers are advised pursuant to sections 39-26-104(3)(c)(III)(B) and 39-26-105.2(2), C.R.S., that the Geographic Information System (GIS) described in those sections is now online and available for retailers to use in determining the jurisdictions to which tax is owed and to calculate appropriate sales and use tax rates for individual addresses.

Beginning July 1, 2021, all retailers will be required to apply the destination sourcing rules.  The Department does not have the authority to grant exceptions to these rules.

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Announcements & Updates

Individual Income Tax Deadline Extended

The individual income tax payment and filing deadline has been extended by 32 days to May 17, 2021, without penalties and interest.

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American Rescue Plan Act

Colorado’s income tax statutes do not incorporate retroactive federal statutory changes that are enacted after the last day of a taxable year. As a result, this federal legislation will not impact state income tax returns for the year 2020, including the taxation of unemployment compensation. 

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1099-G for Unemployment Benefits

Taxpayers who did not receive their 1099-G for unemployment benefits or received an invalid 1099-G for unemployment benefits they did not receive should contact the Colorado Department of Labor & Employment (CDLE)

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Identity Verification Information

Each year, the Department sends out Validation Key letters to some taxpayers. If you have received a letter requesting that you verify your identity, it is important that you promptly respond to the letter.  

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COVID-19 Updates

A temporary state sales tax deduction is now available for qualifying retailers primarily in the bar, restaurant, and the mobile food services industries. The deduction is allowed to be retained by the business to provide assistance from business disruptions due to COVID-19 pandemic. Visit the COVID-19 Sales Tax Relief web page for more information and filing instructions.

We are proud to serve the great people of Colorado as efficiently and safely as possible. We appreciate your patience and understanding as we adapt to keep you and our staff safe. 

All of the Taxpayer Service Centers are now open by appointment only for in-person visits. For more information and to schedule an appointment, go to the Visit a Taxpayer Service Center web page.


More COVID-19 Information

Online Filing Tools

Revenue Online


File state taxes and manage your state tax account

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Sales & Use Tax System (SUTS)

State-administered and home rule sales and use tax filing

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Geographic Information System (GIS)

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

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Rulemaking Announcements

April 1, 2021
On March 17, 2021 the Colorado Department of Revenue, Division of Taxation, adopted ten
April 1, 2021
On April 1, 2021, the Colorado Department of Revenue, Division of Taxation, adopted temporary emergency rules to comply with


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