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.

Taxes which can be filed in TSC

Which taxes can I file using the Taxpayer Service Center? (TSC)

ELECTRONICALLY FILE THE FOLLOWING BUSINESS TAX RETURNS
  • Admissions and Dues Tax Return
  • Attorney Occupational Tax Return
  • Beverage Container Deposit Report 
  • Business Entity Tax Return
  • Corporation Business Tax
    • (Forms CT-1120, CT-1120ES, CT-1120EXT)
  • Pass-Through Entity Tax Return 
    • (Forms CT-1065/1120SI, CT-1065/CT-1120SI ES, CT-1065/CT-1120SIEXT)
  • Electronic Generation Tax Return 
  • Hospital Net Revenue
  • Income Tax Return for Trusts and Estates 
    • (Forms CT-1041, CT-1041S, CT-1041EXT)
  • Nursing Home User Fee
  • Prepaid Wireless Fee
  • Resident Day User Fee Tax Return 
  • Room Occupancy Return
  • Sales and Use Tax Return
  • Withholding Wage
    • (Forms CT-WH, CT-941, CT-W3)
  • Withholding Non-Wage
    • (Forms CT-8109, CT-945, CT-1096)
ELECTRONICALLY FILE THE FOLLOWING INCOME TAX RETURNS
  • CT-1040 - Connecticut Resident Income Tax
  • CT-1040NR/PY - Nonresident/Part-Year Resident Tax Return
  • CT-1040ES - Estimated Connecticut Income Tax Payment for Individuals
  • CT-1040EXT - Application for Extension of Time to File Income Tax Return for Individuals
  • CT-1040X - Amended Income Tax Return for Individuals