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.

Prior Years Sales Tax Return

Name Type Description Revised
 OS-114  Form Sales and Use Tax Return 07/2021 
 O-88  Instructions Instructions for OS-114  07/2021