Highway Use Fee - Registration is now open for certain carriers to register for the new Connecticut Highway Use Fee - Click here for more information.

IMPORTANT INFORMATION - the following tax types are now available in myconneCT: Individual Income Tax, Attorney Occupational Tax, Unified Gift and Estate Tax, Controlling Interest Transfer Tax, and Alcoholic Beverage Tax. - Click here for the latest information.

Business Use Tax Returns

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