Child Tax Rebate - A new child tax rebate was recently authorized by the Connecticut General Assembly, click here to learn more.

Gas Tax - For updated information on the Suspension of the Motor Fuels Tax click here

Sales tax relief for sellers of meals: - Click here for updated information

myconneCT - Learn more about myconneCT

Business Entity Prior Years 

Name

Type

Description

OP-424

Form & Instr.

2015-2016 Business Entity Tax Return

OP-424

Form & Instr.

2013-2014 Business Entity Tax Return

OP-424

Form & Instr.

2012 Business Entity Tax Return

OP-424

Form & Instr.

2011 Business Entity Tax Return

OP-424

Form & Instr.

2010 Business Entity Tax Return

OP-424

Form & Instr.

2009 Business Entity Tax Return

OP-424

Form & Instr.

2008 Business Entity Tax Return

OP-424

Form & Instr.

2007 Business Entity Tax Return

OP-424

Form & Instr.

2006 Business Entity Tax Return

OP-424

Form & Instr.

2005 Business Entity Tax Return

OP-424

Form & Instr.

2004 Business Entity Tax Return

OP-424

Form & Instr.

2003 Business Entity Tax Return

OP-424

Form & Instr.

2002 Business Entity Tax Return

File Electronically for FREE! Use the TSC-BUS