Connecticut State Department of Revenue Services

- CT filing, payment deadlines for individual income tax returns extended to May 17th. Read more.

- Please check our 2021 CT Tax Filing Season FAQ's

- Learn more about myconneCT

- Walk-in services at all DRS branch office locations remain suspended.

Business Use Tax Returns

Name Description  Revised Date  Due Date 
OS-114BUT  Business Use Tax Return  07/2018  Varies 
O-88BUT  Instructions for OS-114BUT  07/2018  N/A