Welcome to the Colorado Department of Revenue Withholding Tax ZeroFile System.
Use this service to safely and easily file a Colorado Withholding Tax Return for state income tax
if you have zero witholding (line 1 of form DR 1094) and no tax due.

Who can use this service?
  • Employers who had no state income tax withholding to report and
  • file monthly, quarterly or seasonally.
  • Employers who file weekly or frequently can file a zero return on our EFT system at 877-265-6338
    or by choosing Electronic Payment on our web site taxcolorado.com.
What do you need?
  • The Colorado account number on your withholding coupon book.

Please enter your Colorado account number. Do not enter the L or any dashes.

Frequently Asked Questions
   
  Need help? You can contact us with questions at
  • Our Call Center (303)238-SERV (7378), press 3, then press 1, then press zero.
  • Our Online Customer Support Site.
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