Upcoming CT DRS webinar: Select to register for the upcoming Withholding Forms W-2 and 1099 Annual Filing Webinar on Wednesday, January 15, 2025, at 10:00 a.m.

We are currently adding the 2024/2025 forms as they are finalized. If you don't see a form linked, it means it isn't available yet.
Continue to check for updates. Thank you for your patience

Prior Year's Income Tax Forms

File Your 2024 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 2024 Connecticut Resident Income Tax Return Instructions  
CT-1040NR/PY 2024 Connecticut Nonresident and Part-Year Resident Income Tax Return Instructions  

Resident Form
Name Description Revised Date
CT-1040 2024 Resident Income Tax Return 12/2024

Part-Year/Nonresident Forms

Name Description Revised Date
CT-1040NR/PY 2024 Nonresident/Part-Year Resident Tax Return 12/2024
Schedule CT-SI Nonresident or Part-Year Resident Schedule of Income from Connecticut Sources 12/2024
Schedule CT-1040 AW Part-Year Resident Income Allocation 12/2024

EITC Forms

Schedule CT-EITC 2024 Connecticut Earned Income Tax Credit 12/2024
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 10/2024
CT-1040 EXT Application for Extension of Time to File Connecticut Income Tax Return for Individuals 12/2024
Schedule CT-Dependent CT Resident Dependent Information 12/2024
Schedule CT-BIO Bioscience Worksheet 12/2024
Schedule CT-PE Pass-Through Entity Tax Credit 12/2024
Schedule
CT-IT Credit
Income Tax Credit Summary 12/2024
CT-1040BA Nonresident Business Apportionment Schedule 12/2024
CT-1040CRC Claim of Right Credit 12/2024
Schedule
CT-CHET
2024 Connecticut Higher Education Trust (CHET) 529 College Savings Plan Contribution 12/2024
CT-1040EFW Connecticut Electronic Withdrawal Payment Record 12/2022
CT-1040ES 2025 Estimated Connecticut Income Tax Payment Coupon for Individuals 12/2024
CT-1040V Connecticut Electronic Filing Payment Voucher 12/2024
Schedule
CT-1040WH
Connecticut Income Tax Withholding Supplemental Schedule 12/2024
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 12/2024
CT-1127 Application for Extension of Time for Payment of Income Tax 12/2024
CT-19IT Title 19 Status Release Form 12/2024
CT-2210 Underpayment of Estimated Income Tax by Individuals, Trusts, and Estates 12/2024
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 12/2024
CT-8379 Nonobligated Spouse Claim 12/2024
CT-8801 Credit for Prior Year Connecticut Minimum Tax for Individuals, Trusts, and Estates 12/2024
CT-8857 Request for Innocent Spouse Relief 12/2024
CT-IRF Insurance Reinvestment Fund Credit 12/2024
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