NEW 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.

2017 Composite Income Tax

Name

 Description

Revised
Date

CT-1065/CT-1120 SI

2017 Connecticut Composite Income Tax - INSTRUCTION BOOKLET

12/2017

CT-1065/CT-1120SI

2017 Connecticut Composite Income Tax Return

12/2017

Supplemental Attachment

2017 CT-1065/CT-1120SI Supplemental Attachment

12/2017

CT-1065/CT-1120SI EXT

2017 Application for Extension of Time to File Connecticut Composite Income Tax Return

12/2017

CT-K-1T

2017 Transmittal of Schedule CT-K-1, Member's Share of Certain Connecticut Items

12/2017

Schedule CT K-1

2017 Member's Share of Certain Connecticut Items

12/2017

CT-AIT

Angel Investor Tax Credit

02/2017


SN 2018(4) Guidance on 2018 Estimated Payments for the Newly Enacted Pass-Through Entity Tax
N/A

CT-1065/CT-1120 SI ES - (COUPON)

2018 Estimated Connecticut Pass-Through Entity Tax - (Fillable)

06/2018