Iowa Corporation Biennial Report
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.
What Iowa requires
Biennial Report
| Frequency | every two years |
| Due | Biennial report due between January 1 and April 1 of the filing year (every two years) |
| Fee | $45 |
| Form | Biennial Report |
Iowa is one of 7 states on a biennial corporate reporting cycle — which works out to $22.50 a year once averaged, the number to use when comparing against annual-filing states. Nationally, 41 states require an annual corporate report, 7 require one every two years, and 2 require none.
What the filings cost over five years
State filing charges only — incorporation plus five years of reporting, annualized. Because this state reports every two years, the yearly figure is the fee halved; a biennial filer actually writes two or three cheques over five years, not five. Corporate income tax and franchise tax are excluded, because both depend on income or net worth.
| Period | State filing charges |
|---|---|
| Incorporation | $50 |
| Each year after (report, annualized) | $22.50 |
| Five-year equivalent (annualized) | $162.50 |
That ranks Iowa 13th cheapest of 49 states on five-year corporate filing charges.
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
State taxes a Iowa corporation pays
Corporate income tax
| Applies | Yes |
| Rate | Graduated: 5.5% on income up to $100,000; 7.1% on income over $100,000 (Iowa DOR published rate for tax years beginning on/after Jan 1, 2024; reduces automatically toward a flat 5.5% as net corporate receipts exceed $700M) |
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.
What these totals leave out: the filing-charge figures on this page are what you pay the business filing office. They exclude corporate income tax and any franchise or gross-receipts tax, because both depend on income, net worth or receipts. The section above sets out what Iowalevies — or that it levies neither. Where a state's franchise tax carries a flat minimum, that minimum is an unavoidable annual cost these totals do not include, and over five years it can be the larger number.
C-corp return: IA 1120 (Iowa Corporation Income Tax Return)
Frequently Asked Questions
Where these numbers come from
This page covers the recurring report a for-profit corporation files with Iowa. 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.