- Do you owe back taxes? The 2021 CT Tax Amnesty Program offers a limited opportunity to make it right. Click here for more information.


- If you filed 2020 Schedule CT-EITC, Connecticut Earned Income Tax Credit along with your 2020 Form CT-1040, Connecticut Income Tax Return, on or

before December 31, 2021, you may be eligible for the 2020 EITC Enhancement Program, click here for more information.


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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

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