Important: See Tax Year 2012 Income Tax Changes for Iowa Taxpayers
ePay - free 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.
Many of the Department's online forms are fillable. Adobe Reader Version 11 includes a new feature which allows the form to be saved after it is filled out. Download Adobe Reader for free at this link.
Forms - PDFs
IA 8453-C Corporation Income Tax Declaration for an E-File Return 42-009
IA 1120 Long Form return only 42-001
IA 1120A Short Form return only 42-030
IA 1120 instructions only 42-002
IA 1120A Short Form instructions only 42-031
IA 8453-S S Corp Income Tax Declaration for an E-File Return 42-013
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
IA 128 Research Activities Credit 41-128
IA 128S Alternate Simplified Research Activities Credit 41-124
IA 133 New Jobs Credit Worksheet 41-133
IA 135 E85 Gasoline Promotion Tax Credit 41-150
IA 137 Ethanol Promotion Tax Credit 41-151
IA 138 E15 Plus Gasoline Promotion Tax Credit 41-152
IA 148 Tax Credits Schedule
IA 1139-NOL Application for Refund Due to the Carryback of Net Operating Losses and Alternative Minimum Tax Losses for Years beginning prior to January 1, 2009 ONLY 42-026
IA 1139-CAP Application for Refund Due to the Carryback of Capital Losses 42-028
IA 3468 Investment Tax Credit Worksheet 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 8864 Biodiesel Blended Fuel Tax Credit 41-149
Iowa Estimated Corporation Income Tax Forms
IA 1120ES Estimated Tax Vouchers 45-004
IA 1120ES instructions only for 2013 45-010
IA 1120ES instructions only for 2012 45-010
IA 2220 Underpayment of Estimated Tax 45-006