SUPPORTED STATE FORMS

Connecticut State Income Tax Forms

Stay current with supported tax forms, schedules, and filing requirements for Connecticut.

  • CT 1040—Resident Individual Tax Return
  • CT 1040NR—Nonresident Individual Tax Return
  • CT 1040X—Individual Amended Return
  • CT 1040AW—Part-Year Resident Allocation Worksheet
  • CT 1040CRC—Claim of Right Credit
  • CT 1040ES—Individual Estimated Tax
  • CT 1040 EXT—Underpayment of Estimated Income Tax
  • CT SI—Nonresident Schedule of Income from Connecticut Source
  • CT EITC—Earned Income Tax Credit
  • CT 6251—Individual Alternative Minimum Tax Return
  • CT IT—Income Tax Credit Summary
  • CT 2210—Underpayment of Estimated Income Tax
  • CT 8379—Nonobligated Spouse Claim
  • Use Tax Credit
  • Schedule CT-CHET—Connecticut Higher Education Trust (CHET) 529 College Savings Plan Contribution
  • Schedule CT-PE—Pass-Through Entity Tax Credit