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.

Business Entity Tax Return

Connecticut Business Entity Tax Sunset

File Electronically for FREE! Use the TSC-BUS

Name Type Description Revised
TPG-139 Brochure Connecticut Business Entity Tax Brochure 02/2018
TPG-195 Notice Connecticut Business Entity Tax Registration Notice 09/2016
OP-424 Form & Instr. Business Entity Tax Return 09/2018

For tax years beginning on or after January 1, 2013 the business entity tax is due every other year.

NOTE: Taxpayers that want to close their BET account must first dissolve with the Secretary of State and file a final return. Use the existing form and write the year of dissolution on your form.