The Department of Revenue is processing 2023 income tax returns. For more information, please read the Department's announcement.


Fiduciary Income Tax | File Online

You can file your Fiduciary Income Tax Return online through Revenue Online. However, if you are a first-time Colorado income tax filer, you must file a paper return or through an accepted tax software program. After your first tax return is processed, you may create your own User ID and Password to use in Revenue Online.

Resources Tax Professionals:

Fiduciary Income Tax Services in Revenue Online

Login Required

  • File/amend fiduciary income tax returns
  • View 1099-Gs (issued by the Colorado Department of Revenue)
  • View payment history
  • View account balances
  • View letters from the Department
  • Update your account mailing address
  • Check your refund status (Fiduciary Income Tax)

No Login Required

How-To Videos


How To Set Up Your Revenue Online Account

Requesting a Letter ID


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