Connecticut State Department of Revenue Services

HOLIDAY: The Department of Revenue Services will be closed on Thursday, June 19th, a state holiday.

WEBINAR: DRS will be holding a webinar on Wednesday, June 25, 2025, at 10:00 a.m.  This session will provide an overview of the sales and use tax requirements pertaining to Sales and Use Taxes: Selling at Antique Shows, Craft Shows, Fairs, Farmer’s Markets, or Flea Markets. Select here to register.

Pass-Through Entity Tax Forms

Name  Description  Revised Date 
CT-1065/CT-1120 SI 2018 Connecticut Pass-Through Entity Tax Instructions- INSTRUCTION BOOKLET  11/2018 
CT-1065/CT-1120SI 2018 Connecticut Pass-Through Entity Tax Return  11/2018 
Supplemental Attachment 2018 CT-1065/CT-1120SI Supplemental Attachment  11/2018 
CT-1065/CT-1120SI EXT  2018 Application for Extension of Time to File Connecticut Pass-Through Entity Tax Return  12/2018
Schedule CT K-1 2018 Member's Share of Certain Connecticut Items  11/2018 
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)  2019 Estimated Connecticut Pass-Through Entity Tax - (Fillable) 01/2019
Schedule CT-CE Combined Election 11/2018
Schedule CT-CE Instructions Combined Election Instructions 11/2018
Schedule CT-CE Supplemental Combined Election Supplemental Attachment   11/2018
Schedule CT-AB Alternative Base Calculation
 11/2018
Schedule CT-AB Instructions Schedule CT-AB Instructions, Alternative Base Calculation
 11/2018
Schedule CT-AB Supplemental Alternative Base Calculation Supplemental Attachment  11/2018