Understanding Iowa's franchise tax

Only banks and certain other financial institutions pay Iowa's franchise tax, which they report on form IA 1120F. Iowa Code 422.60(1)(a) imposes the tax on financial institutions for the privilege of doing business in Iowa, measured by net income. Section 422.61(1) lists which institutions count.

The Iowa Department of Revenue lists the rate as 3.8% of taxable income for tax years beginning in 2026, falling to 3.5% for 2027 and later under Iowa Code 422.63(2), as amended by Senate File 2367 in 2022. Iowa Code 422.34(1) exempts banks, trust companies, savings and loan associations, and production credit associations from the corporate income tax, so the franchise tax takes its place. A Department of Revenue evaluation of the franchise tax credit traces the tax back to 1970.

That narrow scope gives most Iowa businesses an advantage over states that tax ordinary entities. Tennessee charges a $100 minimum franchise tax, California LLCs not taxed as corporations pay $800 a year, and Delaware's corporate franchise tax minimum is $175 or $400 depending on the calculation method. Iowa charges ordinary corporations, LLCs, and partnerships no franchise tax at all.

Who must file the Iowa franchise tax?

Iowa Code 422.61(1) defines which financial institutions file the IA 1120F, and the Department's administrative rule 701-600.1(2) applies that definition for franchise tax purposes:

State banks as defined in section 524.103, and state banks chartered under another state's laws
National banking associations
Trust companies
Federally chartered savings and loan associations and non-Iowa chartered savings and loan associations
Out-of-state state-chartered savings banks
Financial institutions chartered by the Federal Home Loan Bank Board
Production credit associations

The same rule exempts unincorporated privately held financial institutions from franchise tax filing. Credit unions are outside the list: state credit unions pay the money and credits tax under Iowa Code 533.329(2), and federal credit unions are exempt under 12 U.S.C. 1768.

C corporations, LLCs, and partnerships are not subject to the franchise tax; depending on their federal tax classification, they may instead owe Iowa corporate income tax or pass income through to their owners. That gives Iowa a much narrower franchise tax reach than how a franchise tax works in many other states.

Additional state taxes

Most Iowa businesses skip the franchise tax, but depending on their activities they may still owe these state taxes:

Corporate income tax: 5.5% on the first $100,000 of taxable income and 7.1% above that for tax years beginning in 2026 (Revenue Order 2025-02).
Sales and use tax: 6% statewide.
Withholding tax for employees: employers withhold against Iowa's individual income tax, a flat 3.8% for 2026.
Unemployment insurance taxes: a $20,400 taxable wage base for 2026 (Iowa Workforce Development).

For many business entities, Iowa requires biennial reporting rather than annual filings, which reduces the administrative burden compared to states that require yearly submissions.

Corporations file between January 1 and April 1 of even-numbered years under Iowa Code 490.1621(4), and LLCs file in the same window of odd-numbered years under Iowa Code 489.212(3). The corporate fee is $60 under Iowa Code 490.122(1)(ad), and the Secretary of State sets the LLC fee at $30 online or $45 on paper.

Automate your Iowa biennial reports with Discern

Iowa's franchise tax reaches only financial institutions, but active Iowa corporations and LLCs, along with foreign entities registered in Iowa, still file biennial reports on an alternating-year schedule that is easy to lose track of between filing windows.

Discern creates and files Iowa biennial reports automatically ahead of each April 1 deadline, provides Iowa registered agent coverage, and sends franchise tax tracking and deadline notifications to financial institutions that file the IA 1120F. Banks with entity footprints beyond Iowa can see how that SOS layer fits their wider obligations in Iowa financial services entity compliance.

For compliance teams managing entity portfolios across multiple states, Discern handles registered agent coverage, annual report filings, and foreign registrations from a single platform, with Iowa's even-year corporate and odd-year LLC cycles tracked alongside every other state's deadlines. Customers with 200+ registrations spend 5 to 10 minutes annually on compliance.

Book a demo with Discern to see your Iowa filings and franchise tax deadlines tracked in one place.

This article provides general compliance information and does not constitute legal advice. Consult qualified legal counsel for guidance specific to your situation.

Frequently asked questions about the Iowa franchise tax

These answers cover the questions multi-entity teams ask most often about Iowa's franchise tax.

Do LLCs or ordinary corporations pay the Iowa franchise tax?

No. Iowa Code 422.60 imposes the franchise tax only on financial institutions as section 422.61(1) defines them. Depending on their tax classification, LLCs, C corporations, and partnerships may owe corporate income tax or pass income through to their owners instead.