Connecticut Tax Forms

Individual Income Tax Forms

Form CT-1040 Connecticut Resident Income Tax Return

Form CT-1040NR/PY Connecticut Nonresident and Part-Year Resident Income Tax Return

Form CT-1040X Amended Connecticut Income Tax Return for Individuals

Form OP-186 Connecticut Individual Use Tax Return

Corporate Income Tax Forms

Form CT-1120 Corporation Business Tax Return

Form CT-1120X Amended Corporation Business Tax Return

Sales Tax Forms

Form OP-186 Individual Use Tax Return

Form OS-114 Business Sales and Use Tax Return

Form OS-114 Sales and Use Tax Return