1065 Connecticut electronic filing information

State contact information

If you have specific questions about what you can e-file or about rejections you received, contact the state for more information.

Connecticut Department of Revenue - Electronic Commerce Unit

25 Sigourney Street, Ste 2

Hartford, CT 06106

Email
: Jim.Annino@po.state.ct.us

Phone
: 860-297-4713

Grace period	5 business days
E-filing mandate	Effective for tax periods beginning January 1, 2014, all composite income tax returns must be filed and the tax payments must be made electronically.
Accepts state-only filings	No
Return types accepted	Partnership Short year Extensions Estimates
Return types not accepted	Amended
Accepts returns with these conditions	Refund Zero balance Balance due
Direct deposit of refunds	Yes
Accepted forms of payment	Direct debit (EFW) Credit card Electronic funds transfer (EFT) Check by mail (only if waiver granted)
Signature requirements	None
Supports PDF attachments	No
Tax year(s) supported for e-filing	Current tax year and two prior tax years
Special considerations	Only CT-1065/CT-1120SI form is allowed to be efiled. Form OP-424 must be filed on TSC unless a waiver is granted.