DRS: CT-1040 EXT


CT-1040 EXT, Application for Extension of Time to File Connecticut Income Tax Return for Individuals.  File Form CT-1040 EXT on or before April 15. If your taxable year is other than the calendar year, file Form CT-1040 EXT on or before the fifteenth day of the fourth month following the close of your taxable year. If the due date falls on a Saturday, Sunday, or legal holiday, the next business day is the due date.  To find the form or further instructions, click here.


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Connecticut business taxpayers can electronically file most Connecticut business tax returns using the Taxpayer Service Center (TSC-BUS). The TSC is an interactive tool that provides a free, fast, easy, and secure way to conduct business with DRS. Click here for more information.