Connecticut State Department of Revenue Services

Holiday Closure: The Department of Revenue Services will be closed on Wednesday, December 25th, a state holiday.

Upcoming CT DRS webinar: Select to register for the upcoming Withholding Forms W-2 and 1099 Annual Filing Webinar on Wednesday, January 15, 2025, at 10:00 a.m.

Unrelated Business Tax

Name Description Revised Date Due Date
CT-990T 2020 Connecticut Unrelated Business Income Tax Return 12/2020
CT-990T - INST. Unrelated Business Income Tax Return (Instructions) 12/2020
CT-990T EXT Application for Extension of Time to File Unrelated Business Income Tax Return 12/2020
CT-990T ES(ESA,ESB,ESC,ESD) 2020 Estimated Unrelated Business Income Tax Payment Coupons 12/2019
CT-990T ES(ESA,ESB,ESC,ESD) 2021 Estimated Unrelated Business Income Tax Payment Coupons 12/2020