Highway Use Fee - Registration is now open for certain carriers to register for the new Connecticut Highway Use Fee - Click here for more information.

IMPORTANT INFORMATION - the following tax types are now available in myconneCT: Individual Income Tax, Attorney Occupational Tax, Unified Gift and Estate Tax, Controlling Interest Transfer Tax, and Alcoholic Beverage Tax. - Click here for the latest information.

Business Entity Tax

Legislation has ended the Business Entity Tax (BET) for any tax period beginning after 12/31/2018.

For more information on the BET sunset see Connecticut Business Entity Tax Sunset.

Prior to the sunset of BET reference IP 2016(14), Q & A on the Business Entity Tax.

Any outstanding delinquencies or assessments for older periods of the BET will remain valid. File Form OP-424, Business Entity Tax Return, and pay the tax due for 2017/2018 and prior years, electronically or by paper Form OP-424.