A Connecticut income tax return must be filed for a taxpayer who died during the year if the requirements for Who Must File a Connecticut Resident Return are met.
The return must be signed and filed by his or her executor, administrator, or surviving spouse for the portion of the year before the taxpayer's death. The person who files the return must clearly write "DECEASED", the deceased taxpayer's name, and the date of death across the top of the return.
A surviving spouse may file a joint return if the surviving spouse filed a joint federal income tax return. Write "Filing as surviving spouse" in the deceased spouse's signature block on the return. If both spouses died during the tax year, their legal representative must file a final return. The Connecticut and federal filing status must be the same.