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Corporation Income Tax

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Nonresident Member Composite Agreement 41-175

  • Read more about Nonresident Member Composite Agreement 41-175
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IA 4562 A/B Iowa Depreciation Adjustment Schedule 41-105

  • Read more about IA 4562 A/B Iowa Depreciation Adjustment Schedule 41-105
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IA 8864 Biodiesel Blended Fuel Tax Credit 41-149

  • Read more about IA 8864 Biodiesel Blended Fuel Tax Credit 41-149
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IA 135 E85 Gasoline Promotion Tax Credit 41-150

  • Read more about IA 135 E85 Gasoline Promotion Tax Credit 41-150
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IA 138 E15 Plus Gasoline Promotion Tax Credit 41-152

  • Read more about IA 138 E15 Plus Gasoline Promotion Tax Credit 41-152
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IA 148 Tax Credits Schedule 41-148

  • Read more about IA 148 Tax Credits Schedule 41-148
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IA 134 S Corporation Apportionment Credit 41-134

  • Read more about IA 134 S Corporation Apportionment Credit 41-134
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IA 133 New Jobs Tax Credit Form 41-133

  • Read more about IA 133 New Jobs Tax Credit Form 41-133
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IA 128 Iowa Research Activities Credit 41-128

  • Read more about IA 128 Iowa Research Activities Credit 41-128
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IA 128S Iowa Alternative Simplified Research Activities Credit 41-124

  • Read more about IA 128S Iowa Alternative Simplified Research Activities Credit 41-124
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  • I Am...
    • An Individual Taxpayer
    • A Business
    • A Tax Professional
    • A Local Government
  • I Need To...
    • File My Taxes
    • Track My Return
    • Track or File Rent Reimbursement
    • Make a Payment
    • Register for a Permit
    • Change or Cancel a Permit
    • Learn About Property Tax
    • Learn About Sales & Use Tax
    • File a W-2 or 1099
    • Request Tax Guidance
  • Tax Forms
    • Tax Forms Index
    • IA 1040 Instructions
  • Resources
    • Law & Policy Information
    • Reports & Resources
    • Tax Credits & Exemptions
    • Education
    • Tax Guidance
    • Tax Research Library
    • Iowa Tax Reform
    • Adopted and Filed Rules
  • Need Help?
    • Common Questions
    • Education
    • GovConnectIowa Help
    • Report Fraud & Identity Theft