CT CT-1120 Information

Form CT-1120, Corporation Business Tax Return, must be filed by every corporation (or association taxable as a corporation) that carries on business or has the right to carry on business in Connecticut. Any corporation dissolved or withdrawn from Connecticut is subject to the corporation business tax up to the date of dissolution or withdrawal. Beginning with the 2014 Income Year Corporate Tax Returns (including Form CT-1120ES) MUST be electronically filed through the TAXPAYER SERVICE CENTER - TSC www.ct.gov/DRS/TSC

Link to official form info:

Link to official form info for CT-1120

Tax Reminder works year round to keep official tax form info up-to-date for Connecticut 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 CT CT-1120 and get reminded when it's due, sign up for a free Tax Reminder account:

  • Upcoming Due Dates in the Next Year:*
  • Monday Mar 17, 2025
  • 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.

Never forget to file CT CT-1120 again.
Are we missing a Connecticut tax form?

If we're missing the form you need, help us help you! Suggest a form we should include!

Anonymous Suggestions?