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Income Tax | Individual -- Help
Help Yourself Online
Recently moved to Colorado? Learn about individual income tax in our
New Resident Guide
. Ready to file? See our
Unsure if you need to file? See
on the Quick Answers webpage.
Need Refund Information? See the
Income Tax | Individual -- Refund Webpage.
Using Revenue Online? See
Revenue Online Sign Up/Login Help Videos
“Where’s My Refund?”
How to use Secure Messaging in Your Revenue Online Account
Call Us With Your Tax Matters
Customer Service Representatives are available Monday through Friday, 8 a.m. to 4:30 p.m.
Tax Information: 303-238-SERV (7378)
Other Contact Phone Numbers
EFT/Electronic Payment Help
Field Audit: 303-355-0400
Report Tax Evasion, Fraud or Scams
Hearing or Speech Impaired:
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
Assistance in Person (Service Centers)
Service centers statewide have staff available who:
Can assist with general information regarding taxes
Can provide tax account registration assistance
Can provide tax filing assistance
Perform enforcement and business seizure activities due to failure to file taxes, and monitor tax delinquencies.
See list of
Taxation Service Centers