Iowa
State Business Income Tax Extension

What Form does the state of Iowa require to apply for an extension?

There is no state-specific form to request an extension, as the state of Iowa automatically provides the extension for up to 6 months for businesses to file an income tax return with
the state.

How do I pay my balance due to the state of Iowa with my extension?

You can choose to pay your balance due along with your return by using any one of the following options:

• E-File & Pay (direct debit) at https://tax.iowa.gov/
• Pay by credit / debit card online or by telephone
• Check or money order
  • Use Payment Form IA-1120ES- If your business comes under C Corporation
  • Use Payment Form IA-103- This payment voucher is applicable for S corporation, and Partnership.

When is the deadline to file a business tax return with Iowa?

LLC and Partnership

• Businesses in Iowa (operating as LLP or General Partnership) have to file their Form IA 1065 by the 30th day of the 4th month following the end of the accounting period.
• Businesses in Iowa (operating as Individual Single Member LLC) have to file their Form (IA 1040) by the 30th day of the 4th month following the end of the accounting period.
• Businesses in Iowa (operating as a limited liability company (LLC)) have to file their Form IA 1120 by the 30th day of the 4th month following the end of the accounting period.

Corporation

• Businesses in Iowa (operating as S Corporation) have to file their Form IA-1120S by the 30th day of the 4th month following the end of the accounting period.
• Businesses in Iowa (operating as C Corporation) have to file their Form IA-1120 by the 30th day of the 4th month following the end of the accounting period.