State R&D Tax Credits: Which States Offer Them?
The federal R&D tax credit under IRC Section 41 is the most well-known incentive for research and development, but it is far from the only one. More than 30 states offer their own R&D tax credits or incentives, and these state credits are in addition to the federal credit — they stack. If your business performs qualifying research in a state that offers its own credit, you may be leaving significant tax savings on the table by claiming only the federal credit.
How state R&D credits work
State R&D credits function independently from the federal credit. Each state sets its own rules for qualification, credit rates, carryforward periods, and filing requirements. Here are the key points to understand:
- Over 30 states offer some form of R&D tax credit or research incentive
- State credits stack with the federal credit — claiming one does not reduce or eliminate the other
- Rules vary significantly between states — qualification criteria, credit rates, carryforward periods, and documentation requirements all differ
- Some states conform to the federal four-part test defined in IRC Section 41(d), while others have their own definitions of what constitutes qualified research
- Credit rates range widely — from around 3% to 24% of qualified research expenses, depending on the state and the taxpayer's size and spending level
- Carryforward periods differ — some states allow unused credits to be carried forward for 5 years, others for 15 years, and some have no limit
Notable state R&D credit programs
The following table summarizes several of the largest and most frequently claimed state R&D credit programs. Rates and rules are subject to change — always consult a state tax advisor for current details.
| State | Credit rate | Key details |
|---|---|---|
| California | 24% of QREs | Largest state R&D credit program. No sunset provision. Credit applies to excess QREs over a base amount. Cannot offset minimum franchise tax but carries forward indefinitely. |
| New York | 6% of QREs (9% for small businesses) | Small businesses with fewer than 10 employees and under M in gross receipts receive an enhanced 9% rate. Unused credits are refundable for qualified small businesses. |
| Texas | Franchise tax credit | Texas offers an R&D credit against the franchise (margin) tax rather than an income tax. Credit equals a percentage of QREs conducted in Texas. |
| Massachusetts | 10% of QREs | Credit applies to QREs exceeding a base amount. 15% rate available for basic research payments. Unused credits carry forward for 15 years. |
| Arizona | 24% / 15% | 24% credit rate on the first .5 million in QREs, 15% on amounts above .5 million. Particularly favorable for small and mid-size companies. |
| Georgia | 10% of QREs | Credit applies to QREs exceeding a base amount. Can offset up to 50% of Georgia net tax liability. Unused credits carry forward for 10 years. |
| Connecticut | 6% incremental | Incremental credit based on increases in QREs over a base period. Additional credits available for companies increasing R&D spending in the state. |
| Pennsylvania | 10% of QREs | Credit for R&D expenses incurred in Pennsylvania. Credits are transferable or saleable, making them valuable even for companies with no current tax liability. |
Note: Credit rates, qualification rules, and carryforward provisions are subject to legislative changes. The information above reflects general program structures and may not capture the most recent amendments. Always verify current rules with a state tax specialist before filing.
States with no R&D credit
Not every state offers an R&D tax credit. A handful of states — including Nevada, Wyoming, and South Dakota — do not have a state-level R&D credit. However, it is worth noting that these states also have no state income tax, so the absence of a credit is less impactful. Businesses in these states can still claim the federal R&D credit for qualifying research activities performed there.
Other states may lack a formal R&D credit but offer alternative incentives such as grants, exemptions on R&D equipment purchases, or reduced tax rates for technology companies. A state-by-state analysis is the best way to determine which incentives apply to your business.
How state credits interact with the federal credit
One of the most common questions businesses ask is whether claiming a state R&D credit affects their federal credit. Here is how the interaction works:
- Claiming a state credit does not reduce your federal credit. The federal R&D credit under IRC Section 41 is calculated independently, and receiving a state credit has no impact on the federal credit amount.
- Some states require a deduction reduction. Certain states require you to reduce your state-level deduction for research expenses by the amount of the state credit received. This is similar to how the federal credit under IRC Section 280C(c) requires a reduction in the federal deduction (or an election to take a reduced credit).
- State credits may affect your federal taxable income. If a state credit reduces your state tax liability, your state tax deduction on your federal return may be lower, which could slightly increase your federal taxable income. The net effect is almost always positive — the credit far exceeds any incremental federal tax.
Using federal documentation for state filings
If you have already claimed the federal R&D credit, much of the documentation you assembled — project descriptions, employee time allocations, supply costs, and contractor invoices — can serve as a starting point for state credit filings. Many state credits use the same or similar definitions of qualified research expenses, so the underlying records are largely the same.
That said, state-specific adjustments are often necessary. Some states require additional forms, separate calculations for in-state versus out-of-state expenses, or different base amount computations. Working with a CPA or state tax specialist who understands your state's program is strongly recommended.
TaxCredit4U and state credits
TaxCredit4U currently covers the federal R&D tax credit only. The platform calculates your federal credit under IRC Section 41, generates Form 6765, and produces supporting documentation for the federal claim. State credits are not included in the calculation or output at this time.
However, the federal documentation that TaxCredit4U produces — including your qualified research expense breakdown, project narratives, and employee allocation data — provides a solid foundation for your CPA or state tax advisor to prepare state-level filings. If you are considering state credits, share your TaxCredit4U report with your tax professional as a starting point.
Frequently asked questions
- Can I claim both federal and state R&D credits?
- Yes, they stack. The state R&D credit is a separate credit offered by your state government and is claimed in addition to the federal credit under IRC Section 41. Claiming one does not disqualify you from claiming the other. In most cases, you can receive both credits for the same qualifying research expenses.
- Does TaxCredit4U calculate state R&D credits?
- No. TaxCredit4U currently covers the federal R&D tax credit only. However, the federal documentation and qualified research expense calculations that TaxCredit4U generates can serve as a useful starting point for your CPA or state tax specialist when preparing state R&D credit filings.
- Do all states follow the federal four-part test?
- No. Some states conform to the federal definition of qualified research under IRC Section 41 and apply the same four-part test. However, other states have modified qualification criteria or entirely independent definitions of eligible research activities. You should review your specific state's statutes or consult a state tax advisor to understand the qualification requirements in your jurisdiction.
Start with your federal credit. Estimate your R&D tax credit in about three minutes — free, no account required. Then share the results with your CPA to explore state credits.