Connecticut Income Tax
General administration:
Department of Revenue Services
25 Sigourney Street
Hartford, CT 06106
860-297-5962
http://www.ct.gov/drs/site/default.asp
Request Tax Registration Number by filing Form REG-1 (Application for Tax Registration Number):
Department of Revenue Services
25 Sigourney St.
PO Box 2937
Hartford, CT 06104-2937
Register for electronic funds transfer (required if prior fiscal year withholding liability in excess of $50,000) by filing Form EFT-1 (Authorization Agreement for Electronic Funds Transfers):
State of Connecticut
Department of Revenue Services
PO Box 2937
Hartford, CT 06104-2937
860-297-4973
Deposit withholdings using Form CT-WH (Withholding Tax Payment).
Report quarterly withholdings by filing Form CT-941 (Quarterly Reconciliation of Withholding) by last day of month following end of quarter:
Department of Revenue Services
PO Box 2931
Hartford, CT 06104-2931
Furnish annual summary statements of wages paid and taxes withheld to employees on Form W-2 (Wage and Tax Statement) by January 31 and to state on Form CT-W3 (Annual Reconciliation of Withholding Tax Payment) by last day of February:
Department of Revenue Services
PO Box 2930
Hartford, CT 06104-2930
Report annual non-employee compensation in excess of $600 by filing Form CT-1096 (Annual Summary and Transmittal of Information Returns) and Forms 1099 by last day of February:
Department of Revenue Services
PO Box 5081
Hartford, CT 06102-5081
