1120 Iowa electronic filing information

State contact information

If you have specific questions about what you can e-file or about rejections you received, contact the state for more information.
Taxpayer Services
Taxpayer Service
ERO Support and Customer Service
P. O. Box 10457
Des Moines, IA 50306-0457
Phone
: 515.281.3144

State electronic filing details

Grace period
None
E-filing mandate
Yes
Accepts state-only filings
Yes
Return types accepted
C Corporation
S Corporation
Consolidated / Combined (including QSSS)
Short year
Estimates (with return)
Extension
Amended
Composite
Financial Institution
Return types not accepted
N/A
Accepts returns with these conditions
Refund
Zero balance
Balance due
Direct deposit of refunds
Yes
Accepted forms of payment
Direct debit (EFW)
Electronic funds transfer (EFT)
Check by mail
Signature requirements
ERO retains signed IA-8453 for 3 years
Supports PDF attachments
Yes
Tax year(s) supported for e-filing
Current tax year and two prior tax years
Special considerations
N/A

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