DRS: CT-1120 ES

Form CT-1120 ES, Estimated Corporation Business Tax Payments are due quarterly,  no later than the 15th day of the 3rd, 6th, 9th and 12th  month of the income year ( 3/15, 6/15, 9/15 and 12/15 for calendar year filers).  If the due date falls on a Saturday, Sunday, or legal holiday, the next business day is the due date. This return must be filed and paid electronically. Only taxpayers that receive a waiver from electronic filing from DRS may file paper estimated payment coupons. Form DRS-EWVR,Electronic Filing and Payment Waiver Request can be found on the electronic filing information website atwww.ct.gov/DRS/TSCFiling. 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.