The Iowa R&D tax credit, explained
Iowa rebuilt its R&D credit for 2026. It is now capped, application-based through IEDA, and limited to specific industries.
Last verified July 2026 against Iowa Economic Development Authority guidance.
The short answer
Yes, Iowa has a state R&D tax credit, but it changed significantly starting with tax year 2026 under a law called Senate File 657. The old version, long known for being fully refundable and uncapped, no longer applies going forward.
How the Iowa credit works
The new program is run by the Iowa Economic Development Authority. IEDA can award up to 3.5% of a certified business's qualified Iowa research spending, drawn from a statewide pool capped at $40 million a year.
Only businesses in specific sectors qualify: advanced manufacturing, bioscience, insurance and finance, and technology and innovation. Real estate, agriculture, construction, and retail are excluded. The credit is refundable or creditable to the following year for businesses that get certified and approved.
How it stacks with the federal credit
Iowa's new credit still stacks with the federal R&D credit, but it now takes more planning, since a company has to apply to IEDA and get certified before it can count on the state credit.
The federal credit remains automatic and worth roughly 6% to 10% of qualified spend. A startup under $5 million in revenue can apply up to $500,000 of it against payroll taxes each year, which does not depend on any Iowa application.
Example: a 5-person Iowa team with $410,000 in qualified salaries could see a federal credit of roughly $29,000 to $41,000. If IEDA certifies the company and the statewide pool is not fully claimed by others, the same spending could add a state credit of up to $14,000 at the 3.5% rate, though the exact amount depends on how the $40 million cap gets allocated that year.
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Eligibility and how to claim it
Starting with the 2026 tax year, a company must apply to the Iowa Economic Development Authority by January 31 and be certified in an eligible sector before it can claim the credit. Certification must be renewed every 5 years.
A CPA must review the company's claimed research expenses as part of the process, and the credit is then claimed on the Iowa income tax return, historically using Form IA 128, alongside the IEDA certification.
Because approval is capped and competitive, an Iowa startup planning significant research spending should apply to IEDA early in the year rather than waiting until tax filing season.
Official source: Iowa Economic Development Authority.
Carryforward and deadlines
IEDA applications are due by January 31 each year. Certified businesses must reapply every 5 years to stay in the program.
The credit is claimed in the tax year after the qualifying expenses were incurred. Any amount above what is owed is refundable or can be credited to the following year, so there is little need for a long carryforward like Iowa's old program had.