Iowa S-Corporation Election
By Edmond Hui · Facts verified July 29, 2026 against primary state sources
Edmond Hui · Founder, MyStateLLC
Edmond Hui is a software engineer and serial entrepreneur based in New York who has founded multiple online businesses across e-commerce, media, and information publishing. Before transitioning into tech, he spent years as a commercial real estate professional closing deals totaling over 100,000 square feet, giving him firsthand experience with business formation and entity structuring. He built MyStateLLC to provide the free, state-specific LLC guidance he wished existed when forming his own companies.
Does Iowa recognize the federal S election?
State treatment of the S election
| Follows the federal election | Yes |
| Separate state election form | None required |
| State return | IA 1120S (Iowa Income Tax Return for S Corporations, form 42-004) |
No separate state election to file: the federal election on IRS Form 2553 carries over. That is the election only — the corporation still files IA 1120S. Of the 50 states, 43 follow the federal election with no state form of their own, and 1 more — New York — recognizes S status but requires an election of its own as well.
What an S corporation still owes Iowa
Iowa recognizes the federal S election (no separate state election); income passes through to shareholders, taxed at Iowa's flat 3.8% individual income tax rate (2025 onward), filed on IA 1120S. Iowa also offers an elective pass-through entity tax (PTET).
Franchise or gross-receipts tax
No franchise tax on general business corporations. Iowa imposes a franchise tax only on financial institutions (banks and savings & loans) under Iowa Code ch. 422, Division V.
Iowa corporation vs Iowa LLC
State filing charges only. Corporate income tax and franchise tax are excluded because both depend on income or net worth, so no flat figure exists for either entity.
| Corporation | LLC | |
|---|---|---|
| Formation filing fee | $50 | $50 |
| Report cadence | Every two years | Every two years |
| Report fee | $45 | $30 |
Both entities cost $50 to file in Iowa, so the filing fee is not a reason to pick one over the other.
Full Iowa LLC cost breakdown · LLC vs C-corp explained · LLC vs S-corp explained
How Iowa compares
| State treatment of the federal S election | States |
|---|---|
| Follows the federal election, no state form needed | 43 |
| No corporate income tax, so no state election exists | 4 |
| Has a corporate income tax and does not follow the election — the corporation is taxed like a C corporation | 2 |
| Follow the election but still impose some entity-level tax on the S corporation — California, Illinois, New York, Massachusetts and Delaware among them | — |
| Require a separate state election form as well | 1 |
Compare all 50 states · LLC vs S-corp · S-corp salary and savings calculator
Frequently Asked Questions
Where these numbers come from
This page covers how Iowa treats the federal S-corporation election and what an S corporation still owes the state. Every figure was checked against Iowa's own published sources on July 29, 2026— the state business filing agency's fee schedule, the governing statute, and where a state tax applies, the state Department of Revenue. Commercial formation-service pages were used as leads only and are never cited. Anything the review could not confirm from an official source is left blank on this page rather than filled with an estimate.
Corporate income tax and franchise tax are quoted as the state publishes them, as rate schedules and thresholds, and are excluded from every dollar total here. They depend on income or net worth, so there is no flat figure that would be true for every corporation.