Upcoming CT DRS webinar: Select to register for the upcoming Income Tax Filing Overview Webinar on Wednesday, March 6, 2024 at 10:00 a.m. 

2023 Income Tax Filing Season FAQ's

The following questions and answers will assist you in the final days of the filing season.

Question 1: How does the Connecticut Department of Revenue Services (DRS) recommend that I file my 2023 Connecticut income tax return to receive my refund faster?

Answer: DRS recommends using myconneCT (hyperlinked) to electronically file your Connecticut individual income tax return.  myconneCT is the Department’s new free, secure, and user-friendly online system. Use myconneCT to file your individual income tax return, make payments, check on the status of your refund, view your filing history, and send a secure message. You can also use myconneCT to request an extension of time to file, look up Form 1099-G information, and view the status of your refunds.

What do you need to get started? You will need your:

  • Social Security Number (SSN) (if filing a joint return, use the Primary Spouse’s SSN)
  • The Federal Adjusted Gross Income from one of your three most recently filed Connecticut Individual Income Tax Returns
  • Connecticut Driver's License/Connecticut State ID

Question 2: What are some changes that I can expect when filing my 2023 Connecticut income tax return?

Answer: For a list of 2023 changes please see What's New?

Question 3: Are there any resources to help me calculate my tax?

Answer: Visit myconneCT, select View Tax Calculators, then select Income Tax Calculator.

Question 4: I mailed my Connecticut income tax return but forgot to include the payment. How do I make a payment?

Answer: If you filed your Connecticut income tax return but did not include the payment, you have the option to make your payment electronically or send a check through the mail.

DRS recommends that you make your payments electronically.   myconneCT, provides a confirmation number with the time and date your payment was submitted, and reduces the possibility of errors, lost or stolen checks.

Question 5: What is the due date for paying the Connecticut income tax?

Answer: File and pay by Midnight EST April 15, 2024; the date shown by the U.S. Postal Service cancellation mark must be on or before April 15, 2024.

Question 6: What if I do not have all the information, I need to file my Connecticut income tax return by April 15.

Answer: If you are unable to file a timely Connecticut income tax return because you do not have all the necessary information to file your return, use Form CT-1040 EXTApplication for Extension of Time to File Connecticut Income Tax Return for Individuals, to request a six-month extension of time to file. (This does not grant you an extension of time to pay, see Form CT-1127Application for Extension of Time for Payment of Income Tax, in Question 7.)

Form CT-1040 EXT must be filed, and any tax due must be paid, on or before April 15, 2024. In general, interest and penalty apply to any portion of the tax not paid on or before April 15, 2024.

Question 7: What if I do not have enough money to pay my Connecticut income tax by April 15?

Answer: If you have all of the information necessary to file the Connecticut income tax return, but do not have enough money to pay, you should file your return on time and pay as much as possible. 

  • If you can demonstrate undue hardship, file Form CT-1127Application for Extension of Time for Payment of Income Tax, on or before April 15, 2024. See Form CT-1127 below.
  • If you do not qualify to file Form CT-1127, do not wait for a bill, you should continue to make payments. After DRS sends you a bill, you can request a payment arrangement.

Form CT-1127 must be filed on or before April 15, 2024, to request a six-month extension to pay without penalty. 

Question 8: I forgot to sign my Connecticut income tax return. What should I do?

Answer: Do not send in a second return. Wait for DRS to contact you.

Question 9: I received my refund check, but I need to amend my Connecticut income tax return. What should I do if my Connecticut income tax liability will increase?

Answer: If you have received a paper check and have not cashed it, return it to DRS as soon as possible. Write "VOID" across the check. Include a letter explaining that an amended return will be filed that will reduce the amount of the refund. DRS will apply the amount of the returned check to your account. You should pay any additional amount due on your amended Connecticut income tax return. The check and letter should be mailed to:

Department of Revenue Services
Revenue Accounting, 11th floor
450 Columbus Blvd, Suite 1
Hartford, CT 06103

If you have received a paper check and have cashed it, you will have to pay the amount due on your amended Connecticut income tax return. Make any payment on or before April 15, 2024, to avoid charges for late payment.

Question 10: How far back can I go to amend and claim a refund of an overpayment?

Answer: Generally, the Connecticut statute of limitations for refunding or crediting any Connecticut income tax overpayment expires three years after the due date of the return, but if a timely request for an extension of time to file a return was filed, the statute of limitations expires three years after the extended due date of the return or three years after the date of filing the return, whichever is earlier. If you were required to file an amended return, but failed to do so, a penalty may be imposed. Interest will also be assessed on any additional Connecticut income tax not paid on or before the due date.

See Form CT-1040Xfor instructions on amending returns based on changes to the federal return, another’s states return, as well as for exceptions to the three-year limitation.

Question 11: Where can I get copies of my previously filed Connecticut income tax return?

Answer: You may request a copy of a previously-filed Connecticut income tax return from DRS by completing form LGL‑002Request for Disclosure of Tax Return or Tax Return Information. You can expect to receive your copy in approximately three weeks.

You may also visit myconneCT to view and print copies of your Connecticut income tax returns for the current year and for the two prior years.

Question 12: For purposes of claiming the property tax credit on my Connecticut income tax return, how can I determine the amount of property tax that I paid?

Answer: To claim your property tax credit, you should know the exact amount of property tax that you paid and enter that amount on your CT income tax return.  If you do not know the exact amount you may call your local town hall for the information, file your return without claiming the credit and then amend to claim the credit after you know the exact amount, or you may request an extension of time to file.  (Remember if you owe any tax it must be paid on time.)

Question 13: If I do not owe any Connecticut income tax because of the property tax credit, do I still have to file?

Answer: Yes, you would still be required to file a Connecticut income tax return if any of the following are true for the taxable year:

  • You had Connecticut income tax withheld;
  • You made estimated tax payments to Connecticut or a payment with Form CT-1040EXT;
  • You had a PE Tax Credit;
  • You meet the Gross Income Test;
  • You had a federal alternative minimum tax liability; or
  • You are claiming the Connecticut earned income tax credit (CT EITC).

Question 14: I received my refund check but it was lost, stolen, or damaged.

Answer: Complete Form CT-3911Taxpayer Statement Regarding State of Connecticut Tax Refund, using myconneCT.

Question 15: DRS indicated that my refund was direct deposited, but my bank records do not show that the money was deposited, what do I do?

Answer: Complete Form CT-3911Taxpayer Statement Regarding State of Connecticut Tax Refund, using myconneCT.

Question 16: I filed my Connecticut income tax return but forgot to enter the estimated payments (or payment applied from last year), should I file an amended return?

Answer: No. DRS will verify the amount of your payments. If it finds that you have payments applied to your account, it will automatically correct the amount of your payments.

Question 17: Where can I go if I need more information on filing and paying Connecticut income tax?

Answer: DRS provides many helpful resources to assist you with filing and paying your Connecticut income tax. Visit the DRS Taxpayer Education Center for helpful video tutorials or select the For Individuals tab on the DRS home page to explore additional options.