Holiday Closing - The Department of Revenue Services will be closed on Monday, May 27th, a state holiday.

Corporation Tax Returns
Name Type
CT-1120 2014 Connecticut Corporation Business Tax Instructions
CT-1120 2014 Corporation Business Tax Return
CT-1120A Corporation Business Tax Return Apportionment Computation (with instructions)
CT-1120 ATT Corporation Business Tax Return Attachment Schedules H, I, and J (with instructions)
CT-1120AB Add Back and Exceptions to Add Back of Interest and Intangible Expenses
CT-1120K Business Tax Credit Summary
CT-1120I Computation of Interest Due on Underpayment of Estimated Tax (with instructions)
CT-1120X Amended Corporation Business Tax Return
CT-1120X Amended Corporation Business Tax Return Instructions

OTHER CORPORATION TAX FORMS

AU-796  Reinstatement Guarantee Declaration for Non-stock Corporations 
AU-797 Dissolution Guarantee Declaration for Stock Corporations
AU-800a Withdrawal Guarantee Declaration for Corporations
AU-801 Reinstatement Guarantee Declaration for Stock Corporations
CT-1120A-A Corporation Business Tax Return Apportionment Computation-Air Carriers
CT-1120 A-BMC Corporation Business Tax Return Apportionment Computation - Motor Bus and Motor Carrier Companies
CT-1120 A-BPE Corporation Business Tax Return Apportionment Computation - Broadcasters and Production Entities
CT-1120 A-CCA Corporation Business Tax Return Apportionment Computation of Income from Credit Card Activities
CT-1120 A-FS Corporation Business Tax Return Apportionment Computation of Income from Financial Service Companies Activities
CT-1120 A-IRIC Corporation Business Tax Return Apportionment Computation of Income from Services to Regulated Investment Companies
CT-1120 A-LP Corporation Business Tax Return Apportionment of Limited Partnership Interests
CT-1120 A-MFG Corporation Business Tax Return Apportionment Computation - Manufacturing Companies
CT-1120 A-SBC Corporation Business Tax Return Apportionment Computation - Securities Brokerage Services
CT-1120 CC Authorization and Consent to be Included in a Combined Corporation Business Tax Return
CT-1120 CC-R Revocation of Election and Consent to File Combined Corporation Business Tax
CT-1120 CR Combined Corporation Business Tax Return
CT-1120 CR Combined Corporation Business Tax Return Instructions
CT-1120 PIC Information Return for Passive Investment Companies
CT-1120 U Unitary Corporation Business Tax Return
CT-1120 U Unitary Corporation Business Tax Return Instructions

CREDIT FORMS

CT-1120 DA  Digital Animation Tax Credit  
CT-1120 DL  Donation of Land Credit 
CT-1120 EDPC  Electronic Data Processing Equipment Property Tax Credit 
CT-1120 FCIC Fixed Capital Investment Credit 
CT-1120FP  Film Production Tax Credit 
CT-1120 FPI  Film Production Infrastructure Tax Credit 
CT-1120 GB  Green Building Tax Credit 
CT-1120 HCIC  Human Capital Investment Credit 
CT-1120 HH  Historic Homes Rehabilitation Tax Credit 
CT-1120 HP  Historic Preservation Tax Credit 
CT-1120 HPC  Housing Program Contribution Credit 
CT-1120 HR  Historic Rehabilitation Tax Credit
CT-1120 HS  Historic Structures Rehabilitation Tax Credit 
CT-IRF  Insurance Reinvestment Fund Credit 
CT-1120 MEC  Machinery and Equipment Expenditure Credit 
CT-1120 NJC  New Jobs Creation Credit 
CT-1120 RC  Research and Experimental Expenditures Credit 
CT-1120 RDC  Research and Development Credit 
CT-1120 SBA  Small Business Guaranty Fee Tax Credit 
CT-1120SF  Service Facility Credit 
CT-1120 TIC-EZ  Manufacturing Facility Credit for Facilities Located in a Targeted Investment Community/Enterprise Zone NOTE: This form replaces Forms CT-1120CRMC, CT-1120CRMCEZ, CT-1120MC and CT-1120MCEZ 
CT-1120 XCH  Application for Exchange of Research and Development or Research and Experimental Expenditures Tax Credits by a Qualified Small Business
CT-1120 JET  2014 Job Expansion Tax Credit