Connecticut Tax Forms 2018
Printable State CT-1040 Form and CT-1040 Instructions

Connecticut 2018 CT-1040 Form and Instructions
Free printable 2018 CT-1040 Form and 2018 CT-1040 Instructions booklet in PDF format to print, prepare, and mail your 2019 Connecticut state income tax return.

Printable Connecticut (CT) state income tax form CT-1040 must be postmarked by April 15, 2019 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, 2018 through December 31, 2018. The Connecticut income tax rate for 2018 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. If you have not done so already, please begin with your federal 1040 using the links above or on the left side navigation. Remember that federal tax forms 1040EZ and 1040A have been discontinued for the 2018 - 2019 filing season.

Connecticut Form CT-1040 has been published. Connecticut CT-1040 Instructions have NOT been published. We will update the Connecticut CT-1040 Instructions link when published by the DOR.

2018 Connecticut CT-1040 Form and Instructions

File Connecticut Form CT-1040 if you were a resident for all of 2018.

CT-1040 Form
CT-1040 Instructions (not published)

File Connecticut Form CT-1040NR/PY if you were a part year resident, or, were a nonresident and had income from Connecticut sources.

CT-1040NR/PY Form
CT-1040NR/PY Instructions (not published)

Frequently Required CT Tax Forms, Schedules, Instructions:
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-1040CRC - Claim of Right Credit
CT-1040ES - 2018 Estimated Connecticut Tax Payment Coupon
CT-1040ES - 2019 Estimated Connecticut Tax Payment Coupon
CT-1040TCS - 2018 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 - 2018 CT Income Tax Tables to $102K
Tax Tables - 2018 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 2018 Connecticut state tax forms.

The State of Connecticut Department of Revenue Services will expect your 2018 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 2018 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 2018 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 2018 Connecticut CT-1040 instructions to obtain the proper phone number and mailing address.

Last updated: January 6, 2019