- K-1 S Corporation Information on CD
- 2008 Tax Forms
- Prior-Year Forms
- ePayments
- Estimated Taxes
- Basic Information About Iowa Corporation Income Tax
- Federal Information from the IRS Regarding S Corporations
ePay direct debit through eFile & Pay at no cost to you
- Total Amount Due on tax return
- Estimated Payments
NOTE: History of ePayments for 2006 and later is available only on the eFile & Pay system to enrolled filers using that system.
You will need the free Acrobat Reader to open PDFs.
Forms - PDFs
IA 1120 Long Form return only 42-001
IA 1120A Short Form return only 42-030
IA 1120 and IA 1120A instructions only 42-002
IA 1120S S Corp return only 42-004
IA 1120S instructions only 42-005
IA 1120X Amended Corporation Return 42-024
Tax Payment Voucher 42-019
Schedules F and G Net Operating and Alternative Minimum Tax Loss Carryovers 42-020
Schedule H Computation of Federal Tax Refund/Deduction 42-021
Schedules I and J IA 851 Affiliation/Consolidated Business Activity Ratio 42-022
Schedule of Partner or Shareholder Information 41-034
IA 128 Research Activities Credit 41-128
IA 128A Alternate Calculation for Research Activities Credit 41-129
IA 132 Cow-Calf Refund (This form is no longer in use)
IA 133 New Jobs Credit 41-133
IA 135 E85 Gasoline Promotion Tax Credit 41-150
IA 137 Ethanol Promotion Tax Credit 41-151
IA 148 Tax Credits Schedule
IA 1139 Application for Refund Due to Carryback of Losses 42-026 About 1139
IA 1139F Application for Refund Due to the Carryback of Corporate Farming Losses 42-027
IA 3468 Investment Tax Credit 42-034
IA 4136 Computation of Motor Fuel Tax Credit 41-005
IA 4562A Iowa Depreciation Adjustment Schedule 41-105
IA 4562B Iowa Depreciation Accumulated Adjustment Schedule 41-106
IA 6478 Ethanol Blended Tax Credit 41-142
IA 8864 Biodiesel Blended Fuel Tax Credit 41-149
Application for Iowa Wage-Benefits Tax Credit 42-011(MS Word fillable)
Iowa Estimated Corporation Income Tax Forms
IA 1120ES Estimated Tax Vouchers for 2009 45-004
IA 1120ES instructions only for 2009 45-010
IA 2220 Underpayment of Estimated Tax 45-006