| Orascom Construction Industries | OCI N.V. | multiple | 2012 | $251,000,000 | | MEGADEAL  |
| Apple | Apple Inc. | multiple | 2017 | $213,889,943 | | MEGADEAL |
| Microsoft | Microsoft | multiple | 2014 | $107,256,000 | | MEGADEAL |
| Iowa Fertilizer Company LLC | OCI N.V. | state | 2012 | $84,110,000 | | grant |
| CF Industries | CF Industries | multiple | 2012 | $75,500,000 | | MEGADEAL (Archived) |
| Ipsco | TMK | multiple | 1994 | $73,000,000 | | MEGADEAL (Archived) |
| Microsoft | Microsoft | multiple | 2010 | $65,317,242 | | MEGADEAL (Archived) |
| Bass Pro | Bass Pro | local | 2008 | $56,000,000 | | MEGADEAL (Archived) |
| IBM | IBM Corp. | multiple | 2009 | $53,000,000 | | MEGADEAL (Archived) |
| Diamond V Mills Inc. & DV Technologies Inc. | Cargill | state | 2016 | $42,950,000 | | tax credit/rebate |
| CF Industries Nitrogen | CF Industries | state | 2012 | $32,500,000 | | tax credit/rebate |
| SSAB Iowa | SSAB | state | 2008 | $27,187,500 | | tax credit/rebate |
| Principal Life Insurance Company | Principal Financial | state | 2013 | $22,543,216 | | tax credit/rebate |
| Microsoft Corporation | Microsoft | state | 2014 | $20,256,000 | | tax credit/rebate |
| Microsoft Corporation | Microsoft | state | 2013 | $20,000,000 | | tax credit/rebate |
| Nationwide Mutual Insurance 06-EZ-20 | Nationwide | state | 2005 | $18,831,239 | | enterprise zone |
| Krause Holdings, Inc. | | state | 2015 | $18,590,000 | | tax credit/rebate |
| Siculus, Inc. | Meta Platforms Inc. | state | 2013 | $18,000,000 | | tax credit/rebate |
| Tate & Lyle Ingredients America Inc. | Tate & Lyle | state | 2006 | $17,162,000 | | tax credit/rebate |
| Nationwide Mutual Ins. 2001-EZ-01 | Nationwide | state | 2000 | $16,825,000 | | enterprise zone |
| Google, Inc. | Alphabet Inc. | state | 2012 | $16,800,000 | | tax credit/rebate |
| E.I. DuPont de Nemours and Company/Pioneer Hi-Bred International., Inc. | Corteva | state | 2016 | $16,000,000 | | grant/loan hybrid program |
| Hawkeye Renewables, LLC 07-EZ-022 | | state | 2006 | $15,582,500 | | enterprise zone |
| Deere & Company | Deere | state | 2023 | $15,198,541 | | tax credit |
| Deere & Company | Deere | state | 2010 | $14,800,000 | | tax credit/rebate |
| Deere & Company | Deere | state | 2010 | $14,800,000 | | tax credit/rebate |
| Deere & Company | Deere | state | 2022 | $14,500,691 | | tax credit |
| Belmond Renewable Energy, LLC | | state | 2007 | $14,491,615 | | tax credit/rebate |
| Rockwell Collins Inc. & Subsidiaries | RTX Corporation | state | 2011 | $14,313,898 | | tax credit/rebate |
| Homeland Energy Solutions, LLC | | state | 2007 | $14,289,615 | | tax credit/rebate |
| Rockwell Collins Inc. & Subsidiaries | RTX Corporation | state | 2010 | $14,213,205 | | tax credit/rebate |
| Rockwell Collins Inc & Subsidiaries | RTX Corporation | state | 2023 | $14,169,846 | | tax credit |
| Absolute Energy, LLC 06-EZ-24 | | state | 2006 | $13,930,328 | | enterprise zone |
| Rockwell Collins Inc. & Subsidiaries | RTX Corporation | state | 2017 | $13,918,092 | | tax credit/rebate |
| Rockwell Collins Inc & Subsidiaries | RTX Corporation | state | 2012 | $13,848,248 | | tax credit/rebate |
| Deere & Company | Deere | state | 2013 | $13,795,781 | | tax credit/rebate |
| Rockwell Colllins Inc. | RTX Corporation | state | 2018 | $13,765,858 | | tax credit |
| Aviva USA (AmerUs Group Co.) | Apollo Global Management | state | 2007 | $13,392,500 | | tax credit/rebate |
| Deere & Company | Deere | state | 2010 | $12,797,619 | | tax credit/rebate |
| Rockwell Collins Inc & Subs | RTX Corporation | state | 2019 | $12,698,007 | | tax credit |
| Red Oak Ethanol, Inc. | | state | 2007 | $12,437,500 | | enterprise zone |
| Council Bluffs Ethanol, LLC | | state | 2007 | $12,437,500 | | tax credit/rebate |
| Rockwell Collins Inc. & Subsidiaries | RTX Corporation | state | 2016 | $12,255,474 | | tax credit/rebate |
| Akron Riverview Corn Processors LLC | | state | 2007 | $12,187,500 | | tax credit/rebate |
| Harvest BioFuels Galbraith, LLC | | state | 2007 | $12,102,500 | | tax credit/rebate |
| Rockwell Collins Inc. & Subsidiaries | RTX Corporation | state | 2015 | $12,062,912 | | tax credit/rebate |
| Harvest BioFuels Garner, LLC | | state | 2007 | $12,057,500 | | tax credit/rebate |
| Harvest BioFuels Gilmore, LLC | | state | 2007 | $12,025,000 | | tax credit/rebate |
| Bae Systems Information And Electronic Systems Integration Inc. | BAE Systems | state | 2020 | $12,002,525 | | training reimbursement |
| Tama Ethanol, LLC 07-EZ-015 | | state | 2006 | $12,000,000 | | enterprise zone |
| Deere & Company | Deere | state | 2012 | $11,901,351 | | tax credit/rebate |
| Rockwell Collins Inc. & Subsidiaries | RTX Corporation | state | 2013 | $11,771,749 | | tax credit/rebate |
| Deere & Company | Deere | state | 2011 | $11,762,241 | | tax credit/rebate |
| Rockwell Collins Inc. & Subsidiaries | RTX Corporation | state | 2014 | $11,701,722 | | tax credit/rebate |
| IBM Corporation | IBM Corp. | state | 2009 | $11,700,000 | | infrastructure assistance |
| US Bio Albert City, LLC | | state | 2005 | $11,581,380 | | tax credit/rebate |
| Prestage Foods of Iowa, LLC | | state | 2016 | $11,480,250 | | tax credit/rebate |
| Oregon Trail Energy, LLC | | state | 2007 | $11,429,763 | | tax credit/rebate |
| Deere & Company | Deere | state | 2021 | $11,394,443 | | tax credit |
| Prairie Creek Ethanol, LLC | | state | 2007 | $11,371,250 | | tax credit/rebate |
| Alternative Energy Sources, Inc. | | state | 2007 | $11,270,000 | | tax credit/rebate |
| Big River Resources Grinnell LLC | | state | 2006 | $11,253,325 | | tax credit/rebate |
| Wells Fargo Financial 2002-EZ-05 | Wells Fargo | state | 2002 | $11,250,000 | | enterprise zone |
| Platinum Ethanol LLC 07-EZ-029 | | state | 2006 | $11,175,000 | | enterprise zone |
| CassCo Amaizing Energy LLC 07-EZ-032 | | state | 2006 | $11,016,125 | | enterprise zone |
| John Deere & Company | Deere | state | 2004 | $10,755,000 | | tax credit/rebate |
| Hormel Foods Corporation And Burke Marketing Corporation | Hormel Foods | state | 2018 | $10,512,000 | | grant/loan hybrid program |
| All Energy, Inc. | | state | 2007 | $10,425,000 | | tax credit/rebate |
| Raytheon Technologies Corp. | RTX Corporation | state | 2020 | $10,249,235 | | tax credit |
| Midwest Renewables, LLC | | state | 2004 | $10,179,995 | | tax credit/rebate |
| Flint Hills Resources, f/k/a Midwest Renewables, LLC | Koch Industries | state | 2004 | $10,179,995 | | tax credit/rebate |
| Seaboard Triumph Foods, LLC | | state | 2015 | $10,052,252 | | tax credit/rebate |
| Wells Fargo Home Mortgage | Wells Fargo | state | 2003 | $10,000,000 | | grant |
| Monsanto Company | Bayer | state | 2007 | $10,000,000 | | tax credit/rebate |
| John Deere Des Moines Works | Deere | state | 2011 | $9,830,000 | | tax credit/rebate |
| Continental Manufacturing Chemist, Inc. | | State | 2017 | $9,804,000 | | grant/loan hybrid program |
| Wells Fargo Home Mortgage | Wells Fargo | state | 2003 | $9,775,000 | | tax credit/rebate |
| US Bio Dyersville, LLC | | state | 2007 | $9,655,300 | | tax credit/rebate |
| DuPont Danisco Cellulosic Ethanol LLC | DuPont de Nemours | state | 2010 | $9,631,566 | | grant/loan hybrid program |
| Google, Inc. | Alphabet Inc. | state | 2012 | $9,600,000 | | tax credit/rebate |
| Rockwell Collins, Inc. | RTX Corporation | state | 2007 | $9,512,500 | | tax credit/rebate |
| CJ Bio America Inc. | CJ Group | state | 2011 | $9,511,000 | | grant |
| Deere & Company | Deere | state | 2014 | $9,409,743 | | tax credit/rebate |
| VeraSun Hartley, LLC 07-EZ-016 | | state | 2006 | $9,263,500 | | enterprise zone |
| Wells Fargo Financial, Inc. 05-EZ-13 | Wells Fargo | state | 2004 | $9,200,000 | | enterprise zone |
| Krause Holdings, Inc. | | state | 2014 | $9,080,000 | | enterprise zone |
| VeraSun Fort Dodge | | state | 2004 | $9,024,231 | | tax credit/rebate |
| VeraSun Fort Dodge | | state | 2004 | $9,024,231 | | tax credit/rebate |
| Wellmark, Inc. | | state | 2007 | $9,000,000 | | enterprise zone |
| Trans Ova Genetics, LC | Precigen | state | 2003 | $9,000,000 | | grant |
| Floyd Valley Ethanol LLC | | state | 2007 | $8,993,557 | | tax credit/rebate |
| Pinnacle Ethanol LLC 06-EZ-31 | | state | 2006 | $8,914,911 | | enterprise zone |
| EI Dupont De Nemours And Company Inc. | Corteva | state | 2013 | $8,625,513 | | tax credit/rebate |
| Deere & Company | Deere | state | 2020 | $8,599,016 | | tax credit |
| Rockwell Collins, Inc. | RTX Corporation | state | 2006 | $8,552,500 | | tax credit/rebate |
| Dexter Ethanol, LLC | | state | 2006 | $8,546,550 | | tax credit/rebate |
| EI Dupont De Nemours And Company Inc | Corteva | state | 2012 | $8,539,712 | | tax credit/rebate |
| Central Iowa Renewables Energy, LLC | | state | 2004 | $8,337,610 | | tax credit/rebate |
| Further Fuels LLC | | state | 2006 | $8,263,000 | | tax credit/rebate |
| Quaker Oats Company 2000-EZ-10 | PepsiCo | state | 2000 | $8,225,000 | | enterprise zone |
| Rockwell Collins Inc. | RTX Corporation | state | 2007 | $8,212,500 | | tax credit/rebate |
