If you have an existing sales tax account with the Colorado Department of Revenue, please include your sales tax account number on the Business Registration Form (CR 0100). You will use the same number for both accounts.

Closing an Account

If you need to close your wage withholding tax account you must indicate so on their final withholding return or use the Account Change or Closure Form (DR 1102)   no later than 30 days after close of business.

Changes or Corrections to an Account

To make changes or corrections to your wage withholding account, you can complete the Account Change or Closure Form (DR 1102)  and submit it to us by mail or you may contact us with any changes. If there is a change in ownership or in the Federal Employer Identification Number (FEIN) you must indicate these changes by completing a Colorado Business Registration (CR 0100) and submitting it with any fees associated with the change.