Connecticut Tax Forms 2017
Printable State CT-1040 Tax Form and Instructions

Printable Connecticut (CT) state income tax form CT-1040 must be postmarked by April 17, 2018 in order to avoid penalties and late fees. Printable Connecticut state tax forms for the current tax year will be based on income earned between January 1, 2017 through December 31, 2017. The Connecticut income tax rate for 2017 is progressive from a low of 3% to a high of 6.99%. The state tax table can be found inside the Connecticut Form CT-1040 instructions booklet PDF or as a separate PDF file in the list below.

Preparation of your Connecticut income tax forms begins with the completion of your federal income tax forms. Some of the Connecticut state income tax forms require information from your federal income tax return, for example. We have organized free printable tax forms under the headings 1040EZ, 1040A, 1040, and subsets of 1040. If you have not done so already, please begin with your 1040EZ, 1040A or 1040 using the links above, or on the left side navigation.

2017 Connecticut CT-1040 Tax Form and Instructions

CT-1040 Form
CT-1040 Instructions

Frequently Required Schedules, Vouchers, Requests:
Schedule CT-1040AW - Part-Year Resident Income Allocation
Schedule CT-1040BA - Nonresident Business Apportionment
Schedule CT-1040WH - Connecticut Income Tax Withholding
Schedule CT-CHET - 529 College Savings Plan Contribution
Schedule CT-EITC - Connecticut Earned Income Tax Credit
Schedule CT-IT - Income Tax Credit Summary
Schedule CT-SI - Income From Connecticut Sources (CT-1040NR/PY)
CT-1040 EXT - Application for Extension of Time to File
CT-1040CRC - Claim of Right Credit
CT-1040ES - 2017 Estimated Connecticut Tax Payment Coupon
CT-1040ES - 2018 Estimated Connecticut Tax Payment Coupon
CT-1040NR/PY - CT Nonresident and Part-Year Resident
CT-1040NR/PY Instructions - CT Nonresident and Part-Year Resident
CT-1040TCS - 2017 Tax Calculation Schedule (AGI over $102,000)
CT-1040V - Connecticut Electronic Filing Payment Voucher
CT-1040X - Amended Income Tax Return
CT-1127 - Application for Extension of Time for Payment
CT-2210 - Underpayment of Estimated Income
CT-8822 - Change of Address for Individuals
OP-186 - Connecticut Individual Use Tax Return
Tax Tables - 2017 CT Income Tax Tables to $102K
Tax Tables - 2017 CT Income Tax Tables to $500K

List of all printable CT state income tax forms.

Click any Connecticut state income tax form title above to download, view, print, and save the PDF file. The PDF file format allows you to safely print, prepare, and mail in your 2017 Connecticut state tax forms.

The State of Connecticut Department of Revenue Services will expect your 2017 income tax forms to be printed on high quality printers. Today's laser, bubble-jet, or ink-jet printers are generally acceptable. Color printing is not required, however, we recommend that you read the first few pages of the Connecticut CT-1040 instructions booklet for updates regarding the printing of your 2017 Connecticut state tax forms.

Connecticut State Income Tax Refund Status

To check the status of your Connecticut CT-1040 income tax refund online, visit the State of Connecticut Department of Revenue Services website and use their Check Status Of Refund service. State of Connecticut Department of Revenue Services states on their website that refunds for electronically filed returns generally are issued within 4 business days of the receipt of the return. Paper tax forms mailed in take 10-12 weeks to process. The status of a paper income tax return will not be available until the forms have entered their system.

To check the status of your Connecticut income tax refund for 2017 you will need the following information:

  • Social Security Number
  • Amount of refund

The requested information must match what was submitted on your Connecticut CT-1040 state income tax forms for the current year. To look up prior year refunds, you will need to contact the State of Connecticut Department of Revenue Services service center by phone, email, or mail.

To contact the State of Connecticut Department of Revenue Services service center by phone or email, use the check your refund status link above. Alternatively, view or print the 2017 Connecticut CT-1040 instructions to obtain the proper phone number and mailing address.

Last updated: December 24, 2017