The Colorado DR 1102 form serves as a critical tool for businesses needing to update their information with the Colorado Department of Revenue. This form is primarily utilized to notify the department of changes in business names, addresses, or to formally close an account related to sales tax, withholding tax, or retailer’s use tax. Businesses must provide their Colorado Account Number (CAN) and branch ID when submitting the form to ensure accurate processing. It is essential to complete the form accurately, especially if there has been a change in ownership, as a new Sales Tax / Wage Withholding Account Application (CR 0100) may be necessary. The form also includes sections for indicating the date of closure and the specific tax types affected. Furthermore, businesses are reminded to refrain from altering their name or address on tax returns once the DR 1102 has been submitted, as the Department will issue updated tax forms accordingly. For those operating in multiple locations, it is crucial to specify the relevant account and branch numbers to avoid any billing discrepancies. Submissions can be made online through Revenue Online for added convenience, but paper submissions are also accepted via mail to the designated address in Denver.