State outline of Wisconsin

Wisconsin offers a statewide R&D tax credit for businesses that are growing their investment in qualified research. Unlike some state programs, it's available across the entire state with no geographic restrictions and it applies to a broad range of industries, making it one of the more accessible state-level credits for Wisconsin businesses.

Wisconsin R&D Tax Incentives at a Glance

Research Credit for Increasing Research:

  • Credit based on the increase in qualified research expenses compared to a three-year average baseline
  • Available statewide, with no geographic restrictions or pre-certification required
  • Mostly non-refundable, with a partially refundable component; unused credit can be carried forward for up to 15 years
  • Open to corporations, partnerships, LLCs and individuals with qualifying research activity in Wisconsin
  • No industry restrictions for the standard credit; enhanced rates available for specific qualifying industries

Enhanced Credit for Specific Industries:

  • A higher credit rate applies to businesses performing qualified research related to internal combustion engines and certain energy-efficient products, including energy-efficient lighting systems, building automation and control systems and automotive batteries for hybrid-electric vehicles
  • Businesses in these categories should evaluate whether their work qualifies for the enhanced rate

Federal Benefits:

  • Available for all qualifying U.S. research
  • Payroll tax offset option for eligible startups
  • Stackable with Wisconsin's state credit on the same qualifying expenses

Key Distinctions:

Wisconsin's credit is available to businesses across the entire state, with no requirement to operate in a specific zone or district. The credit is incremental, meaning it rewards businesses that are actively increasing their research investment over time, not just maintaining prior spending levels.

Who Qualifies for Wisconsin's R&D Tax Credit?

Business Location

Your business must be conducting qualified research within Wisconsin. The state follows the same general standards used for the federal R&D credit, with the requirement that expenses be tied to research performed in Wisconsin. Out-of-state research activity does not qualify for the state credit, even if it qualifies at the federal level.

Research Activity

Your business must be conducting qualified research within Wisconsin. The state follows the same general standards used for the federal R&D credit, with the requirement that expenses be tied to research performed in Wisconsin. Out-of-state research activity does not qualify for the state credit, even if it qualifies at the federal level.

Spending Increase

The credit rewards growth in research investment. Your current-year research expenses need to exceed a baseline calculated from prior years. Businesses that are new to R&D or have limited prior-year spending may have a lower baseline, which can work in their favor when calculating the credit.

Filing Within the Deadline

Wisconsin requires that the credit be claimed within four years of the unextended due date of the return for the tax year in which the expenses were incurred. Missing this window forfeits the credit for that year.

What Research Activities Qualify in Wisconsin?

Wisconsin uses the same federal standards to define qualifying research. If your work qualifies under the federal four-part test, it will generally qualify for the Wisconsin credit as well, as long as the research was conducted in Wisconsin.

One practical difference: Wisconsin has not adopted certain federal changes related to how research expenditures are treated for deduction purposes, which means some expenses that are treated differently at the federal level may still be fully counted toward the Wisconsin credit calculation. A qualified tax advisor can help you understand how this affects your specific situation.

What Expenses Qualify for Wisconsin's R&D Tax Credit?

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Wages and Salaries

Employees directly conducting, supervising, or supporting qualified research performed in Wisconsin

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Supplies

Materials consumed during the research process in Wisconsin

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Contract Research

A portion of amounts paid to third parties performing qualified research in Wisconsin

Wisconsin follows the federal definition of qualified research expenses, limited to costs tied to research performed within the state.

R&D Credits for Wisconsin Industries

How Qualifying Research Looks Across Wisconsin's Key Sectors

Manufacturing

New production processes, automation systems, materials improvements, or equipment innovations developed through engineering and systematic testing

Software and Technology

New software platforms, data systems, cybersecurity tools, or algorithm development through iterative technical development and testing

Automotive and Transportation

Engine design, drivetrain innovation, vehicle systems development, or improvements to production processes, including work that may qualify for Wisconsin's enhanced credit rate

Energy and Clean Technology

Energy-efficient building systems, battery technology, grid innovations, or automation and control systems, including work that may qualify for the enhanced credit rate

Biosciences and Medical Devices

Drug formulation, laboratory research, diagnostic device development, or genomics research conducted through systematic experimentation

Agriculture and Food Processing

New cultivation methods, crop improvement technologies, food processing innovations, or agricultural equipment development through technical research

Construction and Engineering

New materials, structural systems, or engineering process improvements developed through technical research and experimentation

Florida Claim Previous Credits

Federal R&D Tax Credit for Wisconsin Businesses

Wisconsin businesses can claim the federal R&D credit on the same qualifying expenses used for the state credit, capturing savings at both levels on the same research investment.

One thing Wisconsin businesses should be aware of: Wisconsin has not adopted the federal changes to how research expenses are deducted that took effect in recent years. This means the state and federal treatment of your R&D costs may differ and how you handle deductions at the federal level can affect your overall tax picture differently in Wisconsin than in other states. If your business has been navigating the federal capitalization rules, it's worth reviewing how those interact with your Wisconsin return. A tax advisor familiar with both programs can help you sequence deductions and credits to get the best combined outcome.

How to Claim Wisconsin's R&D Tax Credit

Step 1:

Identify and Document Qualifying Research Activity

Wisconsin does not require pre-certification, but building solid documentation of your qualifying research throughout the year is essential. Identify which projects and employees are involved in qualifying work, and keep records of how time and expenses are allocated to those activities.

Step 2:

Complete Wisconsin Schedule R

When preparing your Wisconsin income tax return, complete Schedule R (Wisconsin Research Credits) to calculate the credit. This schedule covers all three categories of the Wisconsin research credit, including the standard credit and the enhanced rates for qualifying industries.

Step 3:

File with Your Wisconsin Tax Return

Submit Schedule R with your Wisconsin income or franchise tax return. The specific form depends on your entity type. Any refundable portion of the credit will be applied against your tax liability or paid as a partial refund; unused non-refundable credit carries forward for up to 15 years. The credit must be claimed within four years of the unextended due date of the return.

What Records Should You Keep?

Project-Level Descriptions

Maintain descriptions of each qualifying research project, the technical questions being addressed and how your team worked through them. Documentation should tie specific activities to Wisconsin-based employees and locations.

Payroll and Time Records

Keep payroll records and time-tracking data for employees involved in qualifying research. For businesses with employees working in multiple states, tracking where research activity physically occurred is important, since only Wisconsin-based work qualifies for the state credit.

Expense Records

Retain receipts and invoices for supplies used during research activities, as well as contracts and payment records for any third-party research conducted in Wisconsin. These records form the backbone of a supportable credit claim and should be kept through the applicable audit period.

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Estimate Your R&D Tax Credit in Minutes

Find out how much your innovative work could earn back in tax credits. Use our quick calculator to estimate your potential savings — no forms, no hassle.

Saving Money, Spurring Innovation

Every day, companies nationwide further the mission of innovation with new products, processes and initiatives that change the landscape of how we do business. But innovation takes funding, and with that comes a vicious cycle: You need money to grow your business and develop your products and services… but you also need to do those same things to bring money in.

That’s why R&D tax credits were established. Designed to encourage companies like yours to invest in the innovation, creation and improvement of products or processes, R&D tax credits can offset some of the costs associated with research and development — fueling growth and technological advancement.

Pitfalls Wisconsin Businesses Should Avoid

Missing the four-year filing deadline

Wisconsin requires the credit to be claimed within four years of the unextended due date of the return for the year the expenses were incurred. Unlike some credits that can be claimed on an amended return at any point within the standard statute of limitations, missing this deadline means the credit is gone for that year.

Including out-of-state research expenses

Only research conducted within Wisconsin qualifies for the state credit. Businesses with employees or contractors working across state lines need to track the location of research activities carefully. Expenses tied to out-of-state work don't count toward the Wisconsin credit, even if the same work qualifies for the federal credit.

Overlooking the enhanced credit for qualifying industries

Businesses performing research related to internal combustion engines or certain energy-efficient products may qualify for a higher credit rate. Companies in automotive, transportation, and clean energy sectors should evaluate whether their specific activities qualify before defaulting to the standard rate.

Assuming no prior R&D spending is a disadvantage

The Wisconsin credit uses a baseline built from prior-year spending. Businesses with little or no prior research investment may actually have a lower baseline, which means more of their current spending generates a credit. New or growing R&D programs can be positioned well under this structure.

Can You Claim Credits for Previous Years in Wisconsin?

Wisconsin's four-year filing deadline means there may still be time to claim credits for prior tax years if the deadline has not yet passed. Businesses that have been conducting qualifying research without claiming the credit should act quickly to evaluate open years before that window closes.

The federal R&D credit is also available on amended returns for open tax years within the applicable statute of limitations, and in many cases Wisconsin businesses have significant unclaimed credits at both the state and federal level.

A professional review can identify available credits across open years, confirm which of your activities and expenses qualify, and establish the documentation practices needed to support claims going forward.

WA state R&D lookback window

Watch our latest videos to learn more!

Confused about whether you qualify or how the credits work? Our videos break it all down for you.

Ready to Maximize Your Wisconsin R&D Tax Credits?

Wisconsin's statewide research credit is available to a wide range of businesses, with no geographic hoops to jump through and a partially refundable structure that can deliver real value even for companies still building their tax position. Whether you are claiming the credit for the first time, evaluating open years you may have missed, or looking to identify whether your industry qualifies for an enhanced rate, our team can help you build a complete, well-documented credit strategy.

Frequently Asked Questions

Does my business have to be in a specific location in Wisconsin to qualify?

Wisconsin's R&D credit is available statewide with no geographic restrictions. As long as your qualifying research is conducted within Wisconsin, your location in the state does not affect eligibility.

How is the credit calculated?
Is the credit refundable?
Can I claim both the Wisconsin credit and the federal R&D credit?
My business works in automotive or clean energy. Is there a higher credit available?
What if I have not claimed the credit in prior years?

Access the latest Wisconsin R&D tax credit information and filing requirements:

Wisconsin Department of Revenue

Research Credits Overview

Wisconsin Schedule R

Research Credits Form and Instructions

IRS Form 6765

Federal R&D credit form and instructions

IRC Section 41

Federal law defining qualified research activities

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Lucia Valenzuela

Chief Innovation Officer (CInO)

Lucia is the driving force behind the adoption of new technologies and services at our firm. She stays up to date on advancements and works with firm leadership to develop and implement strategic plans that align with our goal of enhancing the client and employee experience.

Lucia brings to James Moore a decade of experience and forward-thinking leadership in technology, public accounting and tax law matters. A trusted advisor in the field of R&D tax credits, she has successfully guided thousands of companies through the complexities of filing for that credit. Her other notable achievements include the market launch of revolutionary tax software and building a large specialty tax practice at a top 50 accounting firm.

Lucia’s knowledge of technology, strategic partnerships, teambuilding, public accounting and tax law provides our firm with a new and unique perspective on client service and operations. Outside of James Moore, Lucia is active in local bar associations and their respective boards. She also volunteers with Project Youth, Step-Up and other organizations focused on mentoring and empowering underprivileged youth in their journeys toward college.

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This information serves general educational purposes and does not constitute tax, legal, or accounting advice. Wisconsin's R&D tax credit program, including credit rates, refundable portions, eligibility requirements, and filing procedures, is subject to change by the Wisconsin Legislature and Department of Revenue. Federal R&D credit information reflects law as of February 2026. Consult qualified tax professionals before making decisions based on this information.

Last Updated: March 2026
Next Review: Quarterly or upon state or federal legislative or administrative changes