How to Look Up a Colorado Account Number (CAN)

Not sure what your Colorado Account Number (CAN) is with the Colorado Department of Revenue? You can locate your Colorado Account Number (CAN) in a variety of ways. Select an option below to learn more:

If you need information on other tax account tasks, visit the Help with Online Services web page for more information. 


Revenue Online

Log in to the Revenue Online system, on the home-page the CAN is located near the bottom of the screen under ‘Accounts’. 

Image of the Revenue Online User Dashboard


Correspondence from the Department of Revenue

The Colorado Account Number is listed on all letters that have been sent by the Colorado Department of Revenue. The CAN is listed on the right side of the letter with the word "Account."

Image of Correspondence - Example #1

Image of Correspondence - Example #2

Note: If you have questions about why you have received correspondence from the Department, visit the Correspondence FAQ web page for more information.


Previously Filed Return

The CAN is listed in the Colorado Account Number field in the upper portion of the first page on every form. For example, it is located just under the street address field on the Retail Sales Tax Return (DR 0100). 

Image of the DR 0100 Sales Tax Return


Sales Tax License

The Colorado Account Number is listed on the Sales Tax License as the first eight (8) digits of the Use Account Number. The CAN is located on the upper left portion of the sales tax license.

Image of Sales Tax License