Connecticut State Department of Revenue Services

WEBINAR: Next up in the Summer Series of Sales and Use Tax Webinars, DRS will be holding a webinar on Wednesday, July 16, 2025, at 10:00 a.m.  This session will provide an overview of the sales and use tax requirements pertaining to Janitorial Services and Maintenance Services. Select here to register.

Unrelated Business Tax

Name Description Revised Date Due Date
CT-990T 2019 Connecticut Unrelated Business Income Tax Return 12/2019
CT-990T - INST. Unrelated Business Income Tax Return(Instructions) 12/2019
CT-990T EXT Application for Extension of Time to File Unrelated Business Income Tax Return 12/2019
CT-990T ES(ESA,ESB,ESC,ESD) 2020 Estimated Unrelated Business Income Tax Payment Coupons 12/2019
CT-990T ES(ESA,ESB,ESC,ESD) 2019 Estimated Unrelated Business Income Tax Payment Coupons 12/2018