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State program

Ohio Research and Development Investment Tax Credit

A non-refundable credit applied against the commercial activity tax rather than an income tax.

  • Offset only

Last reviewed October 2026

Program overview

Because Ohio taxes businesses through a gross receipts based commercial activity tax rather than a corporate income tax, its research incentive is structured as a credit against that tax. The credit equals a percentage of the amount by which qualified research expenses in Ohio exceed the average of the three preceding years. Ohio also offers a separate loan program for research and development equipment purchases and a sales tax exemption for qualifying research property.

Eligibility

Persons subject to the Ohio commercial activity tax with qualified research expenses, as defined under IRC Section 41, incurred in Ohio.

Benefits

Non-refundable credit against the Ohio commercial activity 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).

Ohio 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.

  1. S1Confirm the research was physically performed within Ohio.
  2. S2Provide the Ohio qualified research expense calculation and base amount.
  3. S3Reconcile Ohio expenses to the federal Form 6765.
  4. S4Show how wages and supplies were apportioned between Ohio and other locations.
  5. S5Provide the Ohio return and credit schedule for each year claimed.
  6. S6Show the carryforward schedule for unused Ohio credits.
  7. S7Confirm the entity claiming the credit is the entity subject to Ohio tax.

Draft questions for illustration, reviewed by a specialist before any engagement.

Common weak spots

  • Expenses for research performed outside Ohio included in the Ohio 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 Ohio

Information 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.