Welcome to the Colorado Department of Revenue Sales Tax ZeroFile System.
Use this service to safely and easily file a Colorado Sales Tax Return for state and
state-collected local sales tax if you have zero net sales (line 3 of form DR 0100) and no tax due.

Who can use this service? • Retailers who have only one location and
  • File monthly, quarterly, annually or seasonally and
  • Have net sales of zero and no payment due.
What do you need? • The Colorado account number on your sales tax license
  • Gross sales and service amount (line 1 of form DR 0100)
  • Sales to other licensed dealers amount (line 2a)
  • Other deductions amount (line 2b)

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.