Fuel Taxes | Help

Help Yourself Online
Exempt Fuel Refund Accounts may use Revenue Online to send a secure message. See "Secure Messaging in Your Revenue Online Account"
Call or Email Us With Your Tax Matters
  • CDOR Customer Service Representatives are available Monday through Friday, 8 a.m. to 4:30 p.m. 
    Fuel Tax Unit: 303-205-8205
  • Colorado Fuel Tracking System: Helpdesk@cofts.com, which is the preferred contact method by the COFTS help desk.  Alternatively, information concerning electronic filing using COFTS is available on the COFTS website or by calling 1-844-673-9272.
Other Contact Phone Numbers
Hearing or Speech Impaired:  Relay Colorado
To use this service, dial the appropriate number above. Give the Relay Colorado agent the number that you would like to call. The Relay Colorado agent will stay on the line to relay the information/conversation to you.
  • TTY Telephone Users: 1-800-659-2656
  • Voice Telephone Users: 1-800-659-3656