State program
Indiana Research Expense Credit
A two-tier credit with a generous rate on the first tranche of qualifying research spending.
- Offset only
Last reviewed October 2026
Program overview
Indiana provides a research expense credit calculated on the increase in Indiana qualified research expenses over a base period amount, with a higher rate applied to the first $1 million of qualifying increase and a lower rate above that. Taxpayers may elect an alternative simplified method with a reduced rate but a simpler base computation, which is often the better choice for companies with incomplete historical records. Indiana also offers a separate sales tax exemption for research and development equipment.
Eligibility
Taxpayers with qualified research expenses incurred for research conducted in Indiana that would qualify under IRC Section 41.
Benefits
Non-refundable credit against Indiana adjusted gross income tax.
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).
Indiana 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 Indiana.
- S2Provide the Indiana qualified research expense calculation and base amount.
- S3Reconcile Indiana expenses to the federal Form 6765.
- S4Show how wages and supplies were apportioned between Indiana and other locations.
- S5Provide the Indiana return and credit schedule for each year claimed.
- S6Show the carryforward schedule for unused Indiana credits.
- S7Confirm the entity claiming the credit is the entity subject to Indiana tax.
Draft questions for illustration, reviewed by a specialist before any engagement.
Common weak spots
- Expenses for research performed outside Indiana included in the Indiana claim.
- 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 IndianaInformation 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.
