NOTICE: Taxpayers are strongly encouraged to visit the DRS website for answers to many questions. You may also email DRS at drs@po.state.ct.us. If contacting DRS by phone, please plan for wait times that may be longer than usual. See DRS FAQ's, which now include important information regarding Connecticut sales tax. Frequently Asked Questions

Mailing Addresses

Most Connecticut taxpayers can electronically file through the Taxpayer Service Center (TSC).  The TSC is a free, fast, easy, and secure alternative to mailing paper.

The following are the mailing addresses to be used for paper returns that are available from DRS and included in the Connecticut income tax booklets.  NOTE:  If you are using a form generated from a software program, the form may have a different mailing address.  Please use the address listed on the form you complete.  By doing so, you will expedite the processing of your return. 

Make your check or money order payable to:  "Commissioner of Revenue Services".  Please write the tax year and form name in the memo.  (example:  2018 CT-1040) 

If you are filing Form... and you are not making a payment: And you are making a payment:
CT-1040EXT
Department of Revenue Services
State of Connecticut
PO BOX 2976
Hartford CT  06104-2976
Department of Revenue Services State of Connecticut
PO BOX 2977
Hartford CT  06104-2977
CT-1040
Department of Revenue Services
State of Connecticut
PO BOX 2976
Hartford CT  06104-2976
Department of Revenue Services
State of Connecticut
PO BOX 2977
Hartford CT 06104-2977
CT-1040NR/PY

Department of Revenue Services
PO Box 2976
Hartford CT 06104-2976

Department of Revenue Services
PO BOX 2977
Hartford CT  06104-2977
CT-1040ES N/A
Department of Revenue Services
PO Box 2932 
Hartford CT 06104-2932
CT-1040X

Department of Revenue Services
PO Box 2935
Hartford, CT 06104-2978

Department of Revenue Services
PO Box 2935
Hartford, CT 06104-2978