Connecticut State Department of Revenue Services

Walk-in services at all DRS branch office locations remain suspended. Email DRS at drs@po.state.ct.us. Email the Priority One Taxpayer Assistance Program: DRSPriorityOne_CollectionsAssist@po.state.ct.us. Please check our Frequently Asked Questions page.

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