Corporation Income Tax Forms ARCHIVE

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Form Name

Tax Year

IA 1120 return only 42-001

20122011
2010
2009
2008

2007
2006

2005
2004
2003
2002
2001

2000
1999
1998
1997
1996

IA 1120 instructions only 42-002

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999

1998
1997
1996

IA 1120S S Corp return only
42-004

 

20122011
2010
2009

2008
2007
2006

2000
1999
1998
1997
1996

IA 1120S instructions only
42-005

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999

1998
1997
1996

IA 1120X Amended Corporation Return 42-024

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999

1998
1997
1996

Tax Payment Voucher - 42-019

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999

1998
1997
1996  

Schedules F and G Net Operating and Alternative Minimum Tax Loss Carryovers 42-020

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999
1998
1997
1996

Schedule H Computation of Federal Tax Refund/Deduction
42-021

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999

1998
1997
1996

Schedules I and J
IA 851 Affiliation/Consolidated Business Activity Ratio 42-022

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999
1998
1997
1996

Schedule of Partner or Shareholder Information 41-034

NOTE: This form is not valid for tax years after 2009

2009
2008
2007

2006
2005

2004
2003

IA 128 Research Activities Credit 41-128

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999
1998
1997
1996

IA 128S Alternate Simplified Research Activities Credit 41-124

20122011
2010

   

IA 128A Alternate Calculation for Research Activities Credit 41-129

This form was replaced by IA 128S in 2010.

2009
2008
2007

2006
2005
2004
2003

2002
2001
2000

IA 133 New Jobs Credit 41-133

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999
1998
1997
1996

IA 135 E85 Gasoline Promotion Tax Credit 41-150

20122011
2010
2009

2008
2007
2006

2005
IA 148 Tax Credits Schedule

20122011
2010
2009

2008
2007

2006 
IA 1139 Application for Refund Due to Carryback of Losses 42-026
NOTE: This form is not valid for tax years after 2008
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
IA 1139F Application for Refund Due to the Carryback of Corporate Farming Losses 42-027
NOTE: This form is not valid for tax years after 2008
2008
2007
2006
2005
2004
2003
IA 3468 Investment Tax Credit
42-034

20122011
2010
2009
2008
2007

2006
2005
2004
2003
2002
2001 
IA 3468A Investment Tax Credit Carry Forward Schedule 42-033

Tax Year 2005 and earlier

IA 4136 Computation of Motor Fuel Tax Credit 41-005

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999
1998
1997
1996

IA 4562A Iowa Depreciation Adjustment Schedule 41-105

20122011
2010
2009
2008
2007

2006
2005
2004
2003
2002
2001
IA 4562B Iowa Depreciation Accumulated Adjustment Schedule 41-106 All years
IA 137 Ethanol Promotion Tax Credit 41-151

20122011
2010
2009
2008

   
IA 6478 Ethanol Blended Tax Credit 41-142 2008
2007
2006
2005
2004
2003
2002
   
IA 8864 Biodiesel Blended Fuel Tax Credit 41-149

20122011
2010
2009
2008

2007
2006
2005
Application for Iowa Wage-Benefits Tax Credit 42-011 Current MS Word fillable
IA 1120ES Estimated Tax Vouchers 45-004

20132012
2011
2010
2009

2008
2007
2006
2005
IA 1120ES instructions only 45-010

20132012
2011
2010
2009

2008
2007 

2006
2005

IA 2220 Underpayment of Estimated Tax 45-006

20122011
2010
2009
2008
2007
2006

2005
2004
2003
2002
2001

2000
1999
1998
1997
1996