Deadline extended! The state-collected sales tax filing and payment deadline for January 2026 has been extended to March 2, 2026.

 
1

CR 0100 - Colorado Sales Tax and Withholding Account Application

Use form CR 0100 to open a sales tax and withholding account, or to add an additional new physical location to an existing account. Please complete all the sections in the application for the applicable account type(s) needed.