Connecticut State Department of Revenue Services

Walk-in services at all DRS branch office locations remain suspended. Email DRS at drs@po.state.ct.us. Email the Priority One Taxpayer Assistance Program: DRSPriorityOne_CollectionsAssist@po.state.ct.us. Please check our Frequently Asked Questions page.

2016 Composite Income Tax

Name

Revised
Date

Due
Date

CT-1065/CT-1120 SI

2016 Connecticut Composite Income Tax Return -BOOKLET

01/2017

CT-1065/CT-1120SI

2016 Connecticut Composite Income Tax Return

12/2016

Supplemental Attachment

2016 CT-1065/CT-1120SI Supplemental Attachment

01/2017

CT-1065/CT-1120SI EXT

2016 Application for Extension of Time to File Connecticut Composite Income Tax Return

01/2017

CT-K-1T

2016 Transmittal of Schedule CT-K-1, Member's Share of Certain Connecticut Items

01/2017

Schedule CT K-1

2016 Member's Share of Certain Connecticut Items

12/2016

CT-AIT

Angel Investor Tax Credit

02/2017