Forms for filing ct state taxes

Connecticut State Department of Revenue Services

File Your 2023 Connecticut Income Tax Return Online!

Benefits to electronic filing include:

Simple, secure, and can be completed from the comfort of your home.
Can reduce return errors.
Results in an immediate confirmation that your submission has been received by DRS.
If you are expecting a refund, electronic filing is the quickest way to receive the refund.

Please consider an electronic option to file your state income tax return this year. Thank you!

Instructions

Name	Description	Revised Date
CT-1040	2023 Connecticut Resident Income Tax Return Instructions	12/2023
CT-1040NR/PY	2023 Connecticut Nonresident and Part-Year Resident Income Tax Return Instructions	12/2023

Resident Form

Name	Description	Revised Date
CT-1040	2023 Resident Income Tax Return	12/2023

Part-Year/Nonresident Forms

Name	Description	Revised Date
CT-1040NR/PY	2023 Nonresident/Part-Year Resident Tax Return	12/2023
Schedule CT-SI	Nonresident or Part-Year Resident Schedule of Income from Connecticut Sources	12/2023
Schedule CT-1040 AW	Part-Year Resident Income Allocation	12/2023

EITC Forms

Schedule CT-EITC	2023 Connecticut Earned Income Tax Credit	12/2023
APL-505	Taxpayer's Earned Income Tax Credit Protest	NEW

Other Forms & Schedules

Schedule CT-1040 REC	Real Estate Conveyance Tax Credit Schedule - Used for Purposes of Completing Form CT-1040	08/2024
CT-1040 EXT	Application for Extension of Time to File Connecticut Income Tax Return for Individuals	12/2023
Schedule CT-Dependent	CT Resident Dependent Information	12/2023
Schedule CT-BIO	Bioscience Worksheet	12/2023
Schedule CT-PE	Pass-Through Entity Tax Credit	12/2023
Schedule CT-IT Credit	Income Tax Credit Summary	12/2023
CT-1040BA	Nonresident Business Apportionment Schedule	12/2023
CT-1040CRC	Claim of Right Credit	12/2023
Schedule CT-CHET	2023 Connecticut Higher Education Trust (CHET) 529 College Savings Plan Contribution	12/2023
CT-1040EFW	Connecticut Electronic Withdrawal Payment Record	12/2022
CT-1040ES	2024 Estimated Connecticut Income Tax Payment Coupon for Individuals	12/2023
CT-1040V	Connecticut Electronic Filing Payment Voucher	12/2023
Schedule CT-1040WH	Connecticut Income Tax Withholding Supplemental Schedule	12/2023
CT-1040X	Amended Income Tax Return for Individuals - NOTE: If you are claiming EITC on Form CT-1040X, you must include Schedule CT-EITC in your submission	12/2023
CT-1127	Application for Extension of Time for Payment of Income Tax	12/2023
CT-19 IT	Title 19 Status Release Form	12/2023
CT-2210	Underpayment of Estimated Income Tax by Individuals, Trusts, and Estates	12/2023
CT-3911	Taxpayer Statement Regarding Refund -Use this form to report a lost, stolen or missing refund check	12/2023
CT-4852	Substitute for Forms W-2 and 1099-R	12/2023
CT-6251	Connecticut Alternative Minimum Tax Return	12/2023
CT-8379	Nonobligated Spouse Claim	12/2023
CT-8801	Credit for Prior Year Connecticut Minimum Tax for Individuals, Trusts, and Estates	12/2023
CT-8857	Request for Innocent Spouse Relief	12/2023
CT-IRF	Insurance Reinvestment Fund Credit	12/2023
OP-186	Individual Use Tax Return	2018
CT-12-717A	Change of Resident Status - Special Accruals Connecticut Surety Bond Form	2017
CT-12-717B	Change of Resident Status - Special Accruals Other Acceptable Security Form	2017
CT-12-717A&B	Forms CT-12-717 A and CT-12-717 B Instructions	2017

Tax Tables & Calculators

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