CO 106 Information

An S corporation/Partnership must file Form 106 for any year it is doing business in Colorado. An S corporation will be deemed to be doing business in Colorado if it is engaged in any activities in Colorado which are beyond the protection afforded by Public Law 86-272.

Link to official form info:

Link to official form info for 106

Tax Reminder works year round to keep official tax form info up-to-date for Colorado and the rest of the USA. The IRS and states change their forms often, so we do the hard work for you of figuring out where the official form info is located.

To access the official link to form CO 106 and get reminded when it's due, sign up for a free Tax Reminder account:

  • Upcoming Due Dates in the Next Year:*
  • Friday Apr 15, 2022
  • Create a free account to see exactly when to file this form, receive email or SMS notification reminders, and to keep a record of filing it in your history.
    * Due dates are based on the filing requirements for this form and may vary depending on your tax year.

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