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Corporation Income Tax

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IA 103 Pass-through Entity Tax Payment Voucher 41-172

  • Read more about IA 103 Pass-through Entity Tax Payment Voucher 41-172
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IA 8827 Corporate Iowa Alternative Minimum Tax/Tax Credit 42-015

  • Read more about IA 8827 Corporate Iowa Alternative Minimum Tax/Tax Credit 42-015
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IA 1120 Iowa Corporation Income Tax Return 42-001

  • Read more about IA 1120 Iowa Corporation Income Tax Return 42-001
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IA 1120 Long Form Instructions 42-002

  • Read more about IA 1120 Long Form Instructions 42-002
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Iowa Adjusted Current Earnings Worksheet 43-013

  • Read more about Iowa Adjusted Current Earnings Worksheet 43-013
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IA 163A Interest Expense Carryover Adjustments 42-040

  • Read more about IA 163A Interest Expense Carryover Adjustments 42-040
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IA 163 Interest Expense Adjustments 42-039

  • Read more about IA 163 Interest Expense Adjustments 42-039
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IA 4626 Alternative Minimum Tax 43-012

  • Read more about IA 4626 Alternative Minimum Tax 43-012
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IA 2220 Underpayment of Estimated Tax 45-006

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IA 101 Nonconformity Adjustments 42-029

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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
    • Report Fraud & Identity Theft