Coronavirus Disease 2019 (COVID-19) in Colorado: State & National Resources

Business Income Tax | File Online

Businesses can file their 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 Login ID and Password to use in Revenue Online. For more information, review the E-Filer Handbook or visit the Online Services web page.

Business Income Tax Services in Revenue Online

  • File/amend income tax returns
  • Check your refund status
  • View payment history
  • View account balances
  • View letters from the Department
  • Update your account mailing address
  • Submit e-Filer Attachments for income tax returns (Instructions) (No Login Required)
  • File a protest (No Login Required)
  • Add Power of Attorney (No Login Required)
  • Set up Third Party access to your tax account (Instructions)
  • Make a payment (No Login Required)

How-to Videos

Tips for Setting up your Revenue Online Account
Solving Login Issues
Resetting your Revenue Online Password
Authenticating a Browser or Device