The Department of Revenue Services will be closed on Monday, July 4, 2022, a state holiday.

Child Tax Rebate - A new child tax rebate was recently authorized by the Connecticut General Assembly. The Department of Revenue Services to hold Live Virtual Event about the 2022 Child Tax Rebate on July 7, 2022, Click here to learn more.

Gas Tax - For updated information on the Suspension of the Motor Fuels Tax click here

Sales tax relief for sellers of meals: - Click here for updated information

myconneCT - Learn more about myconneCT

2017 Individual Income Tax Forms

Instruction Booklets

Name Description Revised Date Due Date
 CT-1040  2017 Connecticut Resident Income Tax Instruction Booklet  12/2017  N/A
 CT-1040NR/PY  2017 Nonresident/Part-Year Resident Tax Instruction Booklet  12/2017  N/A
Forms & Instructions
Name Description Revised Date Due Date
CT-1040 2017 Resident Income Tax Return 12/2017 04/15/2018

Part-Year/Nonresident Forms

CT-1040NR/PY 2017 Nonresident/Part-Year Resident Tax Return   12/2017 04/15/2018 
Nonresident or Part-Year Resident Schedule of Income From Connecticut Sources  12/2017
CT-1040 AW Part-Year Resident Income Allocation Worksheet  12/2017

EITC Forms

CT-IT Credit
Income Tax Credit Summary  12/2017 04/15/2018
Schedule CT-EITC 2017  Connecticut Earned Income Tax Credit 12/2017 04/15/2018

Other Forms & Schedules

CT-1040BA  Nonresident Business Apportionment Schedule  12/2017  N/A
CT-1040CRC Claim of Right Credit 12/2017

2017  Connecticut Higher Education Trust (CHET) 529 College Savings Plan Contribution
12/2017 N/A
CT-1040EFW Connecticut Electronic Withdrawal Payment Record
12/2017 N/A
CT-1040ES 2018 Estimated Connecticut Income Tax Payment Coupon for Individuals 12/2017 varies 
CT-1040V Connecticut Electronic Filing Payment Voucher 12/2017 04/15/18

Connecticut Income Tax Withholding Supplemental Schedule 12/2017 N/A
CT-1040X  Amended Income Tax Return for Individuals 12/2017 N/A
CT-1127 Application for Extension of Time for Payment of Income Tax 12/2017 N/A
CT-19 IT Title 19 Status Release Form 12/2017 N/A
CT-2210 Underpayment of Estimated Income Tax by Individuals, Trusts and Estates (Schedules A & B)  12/2017 N/A
 CT-3911 Taxpayer Statement Regarding Refund - Use this form to report a lost, stolen or missing refund check  12/2017 N/A
 CT-4852 Substitute for Forms W-2 and 1099-R  12/2017 N/A
 CT-6251 Connecticut Alternative Minimum Tax Return  12/2017 N/A
 CT-8379 Nonobligated Spouse Claim  12/2017 N/A
 CT-8801 Credit for Prior Year Connecticut Minimum Tax for Individuals, Trusts and Estates  12/2017 N/A
 CT-8822 Change of Address for Individuals  12/2017 N/A
 CT-8857 Request for Innocent Spouse Relief  12/2017 N/A
 CT-IRF Insurance Reinvestment Fund Credit  12/2017
 OP-186 Individual Use Tax Return 12/2017
 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

Name Description Revised Date Due Date
2017 Tax Tables to $500K     12/2017  N/A
2017 Tax Tables to $102K    12/2017  N/A
Calculation Schedule Use this schedule to calculate the tax if your a.g.i is over $102,000  12/2017  N/A
Income Tax Calculator  Use this calculator to determine your tax liability, regardless of your a.g.i.  12/2017  N/A
Property Tax Calculator
Use this calculator to determine the amount of your property tax credit  12/2017  N/A
Social Security Benefits Use this calculator to determine   your Social Security Benefit Adjustment  12/2017  N/A