Does Connecticut require you to file a business tax extension?


Yes, If you were approved for a federal tax extension, then the State of Connecticut will automatically grant your business a six-month income tax extension. If your business owes the state tax or was not approved for a federal extension, you must submit Connecticut tax extension Form CT-1120 EXT with reasonable cause information.

Which business tax forms are required by the state of Connecticut?


To request Connecticut business tax extension, use Connecticut Form CT-1120 EXT (Application for Extension of Time to File Connecticut Corporation Business Tax Return). To avoid late filing penalties from the State of Connecticut, your filing of Form CT-1120 EXT must be postmarked by the original due date of your return.

What is the deadline to file business tax forms with the state of Connecticut?


The due date to file Connecticut business tax Form CT-1120 EXT by May 15th for calendar year C-corp filers and April 15th for S corp filers.

What is the extended deadline for business taxes in Connecticut?


Connecticut extension offers an additional 6 months tax extension, which moves the filing deadline to October 15 (for calendar year taxpayers).

What payment options does the state of Connecticut offer?


The payments can be made through the following options,

  • Pay Electronically
  • Pay by Credit Card or Debit Card
  • Pay by Mail

Where do I mail Connecticut Form CT-1120EXT?


Mail Connecticut Form CT-1120 EXT with payment to the following address:

Department of Revenue Services,
State of Connecticut,
PO Box 2974, Hartford, CT 06104-2974.

Published by ExpressExtension Support, ExpressExtension
Last modified 3/6/2020 6:45:10 AM EST