State program
Iowa Research Activities Credit
One of the few fully refundable state research credits, available to companies in qualifying industries.
- Refundable
Last reviewed October 2026
Program overview
Iowa's research activities credit is refundable, meaning companies receive the excess in cash even if they owe no Iowa income tax. Legislative changes narrowed eligibility to businesses in manufacturing, life sciences, software engineering, aviation and aerospace, and introduced a partial refundability schedule for larger claims. Companies participating in the High Quality Jobs Program may qualify for a supplemental credit at an increased rate.
Eligibility
Businesses in eligible industries conducting qualified research in Iowa and claiming the federal research credit. Certain service industries, retailers, wholesalers and agricultural producers are excluded.
Benefits
Refundable credit paid in cash to the extent it exceeds Iowa income tax liability, subject to statutory refundability limits.
Caps, deadlines and forms
Caps and limits
No annual cap is stated for this program.
Deadlines
Claimed on the annual return; no separate application deadline is stated.
Forms
Filing forms are listed by the revenue authority: official source (opens in a new tab).
Iowa IDR questions
What an examiner is likely to ask about this credit. S1–S7 apply to every state claim; the rest come from this program's own rules.
- S1Confirm the research was physically performed within Iowa.
- S2Provide the Iowa qualified research expense calculation and base amount.
- S3Reconcile Iowa expenses to the federal Form 6765.
- S4Show how wages and supplies were apportioned between Iowa and other locations.
- S5Provide the Iowa return and credit schedule for each year claimed.
- S6Show the carryforward schedule for unused Iowa credits.
- S7Confirm the entity claiming the credit is the entity subject to Iowa tax.
- IA-1Show the Iowa refund eligibility tests (such as small business status) were met in each year refunded.
Draft questions for illustration, reviewed by a specialist before any engagement.
Common weak spots
- Expenses for research performed outside Iowa included in the Iowa claim.
- Refund claimed without evidence that the eligibility tests were met.
- Base amount computed from incomplete historical records.
See how your claim holds up
The mock audit drafts these questions for your own claim and scores the evidence behind each answer.
Run a mock audit for IowaInformation on this page is general in nature, not tax advice. Program details change frequently; always confirm current rules with the relevant revenue authority or engage a specialist before acting. Last reviewed October 2026.
Find out what your research actually qualifies for
A scoping conversation takes thirty minutes and costs nothing. You leave with a view on eligibility, likely credit range and the documentation you would need.
Free R&D mock audit: completely free. Book a call or email hello@creditarmor.ai for a login.