State R&D Credits · Brief · Working level
Ohio R&D tax credit: 7% against the CAT
Ohio's research credit is 7% of incremental in-state QREs claimed against the commercial activity tax rather than an income tax — a gross-receipts-tax credit that works in loss years, with a seven-year carryforward.
Ohio attaches its research credit to an unusual host: the commercial activity tax. As of mid-2026, the credit equals 7% of qualified research expenses incurred in Ohio in excess of the taxpayer's average in-state QREs over the three preceding calendar years, using federal Section 41 QRE definitions, nonrefundable, with a seven-year carryforward. Because the CAT is a gross-receipts tax, the credit is usable by companies that owe no income tax anywhere — a structural feature, not a loophole. Confirm current parameters with the Ohio Department of Taxation.
Computation: federal QREs, rolling average, CAT host
The definitional work travels from the federal claim: the four-part test and the wage/supply/contract-research categories apply, restricted to research performed in Ohio. The base is the simplest of the major-state designs — the average of Ohio QREs for the three prior calendar years — so, like Illinois, Ohio pays for growth in in-state research and pays a flat spender approximately nothing. No application, no pool: the credit is computed and claimed on the CAT return.
The host tax is what distinguishes Ohio in the dimension framework. The CAT applies to Ohio taxable gross receipts at a low rate above an exclusion, and Ohio has legislated meaningful changes to CAT thresholds and exclusions in recent years — changes that alter how much liability exists for the credit to offset. A smaller CAT footprint means slower credit utilization, so the recent trajectory of CAT law is itself a credit-planning input; the Department of Taxation's current guidance controls.
Monetization
| Feature | Ohio treatment (as of mid-2026) |
|---|---|
| Rate / base | 7% over trailing 3-year average of Ohio QREs |
| Host tax | Commercial activity tax (gross receipts) |
| Carryforward / carryback | 7 years / none |
| Refundable / transferable | No / no |
| Usable in loss years | Yes, to the extent of CAT liability |
The loss-year point deserves emphasis because it inverts the usual analysis. In income-tax states, a pre-profit company accrues credits and waits. In Ohio, a pre-profit company with $50 million of Ohio receipts owes CAT and can absorb credit now. The mirror image is also true: a profitable company with modest Ohio receipts has little CAT for the credit to offset, and the seven-year clock runs.
Who benefits
Companies growing Ohio research and carrying substantial Ohio receipts — manufacturers, logistics-adjacent technology, consumer businesses with in-state development teams. Revenue-light startups do less well here than intuition suggests: without receipts there is little CAT, and without CAT the nonrefundable credit queues in a seven-year carryforward. Multistate filers should also note the pleasant compliance fact: the base is a simple trailing average, so the sourcing burden is three years of Ohio-tagged QREs, not a fixed-base reconstruction to the 1980s.
The trap: a shrinking host
The credit's value depends on the CAT's size, and the CAT has been a moving legislative target — exclusion thresholds have risen substantially in recent years, removing smaller companies from the tax entirely. A company modeling seven years of credit utilization against CAT projections built on old thresholds will overstate the benefit; one that has fallen out of CAT filing altogether has no current use for the credit at all. Verify both the credit statute and the current CAT base with the Department of Taxation before counting Ohio value, and keep the trailing-average base honest: the three-year average must include all Ohio QREs, and understating the base years to inflate the increment is the computation examiners test first.
Frequently asked questions
- How does the Ohio R&D tax credit work?
- As of mid-2026, Ohio allows a nonrefundable credit against the commercial activity tax (CAT) equal to 7% of qualified research expenses incurred in Ohio that exceed the taxpayer's average annual in-state QREs for the three preceding years. Qualified research expenses take their meaning from federal Section 41. Unused credit carries forward up to seven years.
- Can I use the Ohio R&D credit if my company is unprofitable?
- Often, yes — and that is Ohio's quiet advantage. The credit offsets the CAT, a gross-receipts tax owed by companies with substantial Ohio receipts regardless of profitability. A loss-running company with real Ohio revenue still pays CAT and can therefore use the credit currently, unlike nonrefundable income-tax credits that strand value in loss years.
- What counts as Ohio qualified research expenses?
- Expenses meeting the federal Section 41 QRE definition — qualified wages, supplies, and contract research — for research performed in Ohio. Because the credit is incremental against a rolling three-year average of in-state QREs, only spending above that average generates credit, and the average must be built from Ohio-sourced records.