Instructions for Form CT-1065, CT-1120SI - Connecticut

Form CT-1065 (CT-1120SI) Connecticut Pass-Through Entity Tax Return - Connecticut

This document contains official instructions for Form CT-1065 , and Form CT-1120SI . Both forms are released and collected by the Connecticut Department of Revenue Services. An up-to-date fillable Form CT-1065 (CT-1120SI) is available for download through this link.

FAQ

Q: What is Form CT-1065?
A: Form CT-1065 is the Connecticut Partnership Return.

Q: What is Form CT-1120SI?
A: Form CT-1120SI is the Connecticut S Corporation Income Tax Return.

Q: Who needs to file Form CT-1065?
A: Partnerships doing business in Connecticut need to file Form CT-1065.

Q: Who needs to file Form CT-1120SI?
A: S Corporations doing business in Connecticut need to file Form CT-1120SI.

Q: What is the purpose of Form CT-1065?
A: Form CT-1065 is used to report the income, deductions, and credits of a partnership in Connecticut.

Q: What is the purpose of Form CT-1120SI?
A: Form CT-1120SI is used to report the income, deductions, and credits of an S Corporation in Connecticut.

Q: When is the due date for Form CT-1065?
A: Form CT-1065 is due on or before the 15th day of the 4th month following the close of the partnership's tax year.

Q: When is the due date for Form CT-1120SI?
A: Form CT-1120SI is due on or before the 15th day of the 3rd month following the close of the S Corporation's tax year.

Q: Are there any penalties for filing Form CT-1065 or CT-1120SI late?
A: Yes, there are penalties for late filing of Form CT-1065 and CT-1120SI. It is important to file the returns on time to avoid penalties and interest charges.