A Strategic Assessment of Iowa’s Research and Development Tax Policy: Mitigating the Economic Risks of Supply Cost Disqualification for Small and Medium Enterprises

Author: Lia Araujo | Iowa R&D Tax Policy Consultant
Published: July 30, 2026 | Series: Swanson Reed State Tax Incentives

Answer Capsule: Why Is the Elimination of R&D Supply Costs Devastating Iowa Manufacturing?

Pursuant to House File 2317, Iowa is currently executing a phased, absolute elimination of R&D supply costs, driving supply eligibility to 0% by 2027. For Iowa’s dominant advanced manufacturing and bioscience SMBs, prototype materials and testing reagents comprise the bulk of experimental capital. Disqualifying these costs penalizes “hard” innovation, severely restricting the qualified baseline for SMBs trying to navigate the new $40M IEDA cap. To reverse this damage, Iowa must pass the Small Business Research Parity Act to restore 100% supply eligibility for firms under 250 employees, or launch a direct Innovation Consumables Grant (ICG) to fund physical prototyping.

Key Takeaways

The Phase-Out Penalty: Iowa is systematically decoupling from federal IRC Section 41 standards, completely eliminating supplies and computer lease costs from qualified research expenditures (QREs) by 2027.
“Hard” vs. “Soft” Innovation Bias: Removing supply costs financially benefits software/tech companies (where labor is the primary expense) while punishing the capital-heavy advanced manufacturing and agriscience sectors that anchor Iowa’s economy.
Regional Competitive Loss: Competing states like Minnesota (10% credit) and Illinois (6.5%) maintain 100% supply eligibility; Iowa’s exclusion acts as a direct price increase on industrial R&D capital.
Proposed Solution 1 (Small Business Research Parity Act): Statutorily restore 100% supply eligibility exclusively for Iowa manufacturers and bioscience firms with fewer than 250 employees, utilizing IEDA certification to block large-corporation wastage.
Proposed Solution 2 (Innovation Consumables Grant): Shift prototype and material support out of the tax code and into a direct 1:1 matching grant (capped at $10M annually) managed by IEDA and verified by technical engineers.

Introduction

The industrial landscape of Iowa is currently undergoing one of its most profound fiscal transformations in recent memory. For decades, the state has relied upon a robust Research Activities Credit (RAC) to incentivize the growth of high-technology sectors, ranging from advanced machinery manufacturing to cutting-edge bioscience. However, with the passage of House File 2317 and the subsequent implementation of Senate File 657, the framework for these incentives is being fundamentally dismantled and rebuilt. Central to this transition is the elimination of supply costs as a qualified research expenditure (QRE), a policy shift that reaches full implementation on January 1, 2027.¹ This whitepaper provides a comprehensive analysis of this policy change, evaluates its impact on small and medium-sized businesses (SMBs) in Iowa, and proposes two legislative pathways to restore the state’s competitive standing while maintaining rigorous fiscal oversight.

The Historical and Legal Context of Iowa’s Research Incentives

To understand the gravity of the current policy shift, one must first evaluate the historical trajectory of the Iowa Research Activities Credit. Since its inception, the RAC was designed to mirror the federal Research and Development (R&D) tax credit under Internal Revenue Code (IRC) Section 41. It functioned as an uncapped, formula-based, and highly refundable credit, which served as a significant draw for capital-intensive industries.⁴ Under this legacy system, Iowa established itself as a national outlier in the most positive sense: it was one of only a few states to offer a truly refundable credit, allowing companies to receive cash payments if their credit exceeded their tax liability.⁶ This feature was particularly critical for startups and SMBs that were often in a pre-revenue or low-profitability phase but were nonetheless making massive investments in product development.

The transition began in earnest with the 2017 and 2018 legislative sessions, which first limited the credit to specific “targeted industries” such as manufacturing, life sciences, software engineering, and aviation.⁷ This was followed by the landmark House File 2317 in 2022, which introduced the multi-year phase-out of supply costs and reduced the refundability of the credit.¹ By the time Senate File 657 was signed into law in 2025, the RAC was slated for total repeal on December 31, 2025, to be replaced by a new, application-based R&D Tax Credit Program under the authority of the Iowa Economic Development Authority (IEDA).³

The Structural Shift in Credit Administration

The new regime represents a movement from an entitlement-based model to a discretionary, grant-like model. Under the legacy RAC, a taxpayer simply calculated their eligible expenses and claimed the credit on their return, subject to Department of Revenue audit.⁴ The new program, however, requires a competitive application process, pro rata allocations from a fixed statewide cap of $40 million, and rigorous pre-certification.³ This shift introduces a level of “timing risk” and “award uncertainty” that was previously absent from the Iowa tax climate.³

Table 1: Structural Evolution of Iowa’s R&D Credit

Program Feature	Legacy Research Activities Credit (RAC)	New R&D Tax Credit Program (Post-2026)
Statewide Fiscal Cap	Uncapped ($77.6M claimed in FY24) ⁴	Capped at $40.0 Million ³
Governing Statute	Iowa Code Section 422.33 ²	Iowa Code Section 15.371 (Proposed/Refined) ¹⁰
Regulatory Body	Department of Revenue (IDR) ⁴	Iowa Economic Development Authority (IEDA) ³
Credit Rate	Up to 6.5% of QREs ⁴	Up to 3.5% of QREs ³
Calculation Basis	Federal Conformity (IRC 41) ²	Modified Iowa Definition ¹
Supply Eligibility	100% Eligible (prior to 2023) ¹	0% Eligible (starting Jan 1, 2027) ¹
Refundability	100% (prior to 2023) ²	50% Limit (effective 2027) ¹

The reduction in the headline rate from 6.5% to 3.5% is significant, but the tightening of the definition of “qualifying expenses” creates an even more profound impact on the manufacturing sector.³ By 2027, the exclusion of supply costs, computer lease costs, and the removal of the federal “substantially all” rule will make the Iowa credit one of the most restrictive in the nation.¹

Deconstructing the Supply Cost Elimination Policy

In the federal context and the vast majority of other states, “supplies” represent a fundamental pillar of the R&D credit. According to the Internal Revenue Code, supplies encompass any tangible property—excluding land and depreciable assets—consumed or used during the research process.⁶ For a manufacturer, this category typically includes raw materials used for prototypes, chemical reagents for laboratory testing, specialized molds for experimental tooling, and components used in “beta” units to test performance and reliability.⁶

The Implementation Timeline of the Phase-Out

The elimination of supply costs was not immediate but followed a five-year regression schedule designed to allow businesses to adapt their capital planning. However, this regression has steadily eroded the value of the credit for manufacturers who rely on physical experimentation.¹

Table 2: Supply Cost Phase-Out Schedule

Tax Year	Allowable Inclusion of Supply Expenses	Statutory Authority
2023	80% of incurred expenses ¹	HF 2317 ¹
2024	60% of incurred expenses ¹	HF 2317 ¹
2025	40% of incurred expenses ¹	HF 2317 ¹
2026	20% of incurred expenses ¹	HF 2317 ¹
2027	0% (Full Elimination) ¹	HF 2317 ¹

By the 2027 tax year, Iowa will be in a position where the labor required to design a prototype is incentivized (through eligible wages), but the very materials required to build and test that prototype are not.⁴ This creates a logical and economic disconnect that penalizes “hard” innovation in favor of “soft” innovation like software engineering, where physical supplies are a negligible part of the expense profile.⁴

The Impact of “Substantially All” Rule Removal

Adding to the supply cost issue is Iowa’s decision to diverge from the federal “substantially all” rule found in IRC Section 41(b)(2)(B). For federal purposes, if 80% or more of a taxpayer’s research activities constitute a process of experimentation, 100% of those activities are considered qualified.¹ Iowa’s new standard effectively requires 100% of the activities to be experimental, removing the 20% “buffer” for supporting activities.¹ When combined with the elimination of supply costs, the total “qualified” base for a manufacturer is severely constricted, making it much more difficult for an SMB to meet the threshold for a meaningful credit award.

The Targeted Impact on Manufacturing-Heavy SMBs

Iowa’s economic identity is inseparable from its manufacturing output. As the state’s largest industry, manufacturing accounts for approximately 17% to 18.8% of the state’s Gross Domestic Product (GDP), contributing between $31.7 billion and $35 billion annually to the economy.⁶ The sector is characterized by a high concentration of small and mid-sized enterprises (SMEs). In 2022, there were nearly 240,000 manufacturing firms in the United States, and over 98% were considered small (fewer than 500 employees). In Iowa specifically, almost 4,000 manufacturers employ over 210,000 workers, with a high concentration in machinery and food production.⁶

The “Cost of Innovation” for Small Firms

For an SMB, the research and development process is rarely a purely academic exercise. It takes place on the shop floor and in the testing lab. Consider a typical Iowa manufacturer in the agricultural equipment sector.⁶ Developing a more efficient harvesting attachment requires the fabrication of multiple physical iterations to test structural integrity under Iowa’s specific soil and weather conditions. The cost of the steel, sensors, and hydraulic fluid used in these prototypes often represents a significant portion of the total project budget.

Under the 2027 rules, these costs become entirely “sunk” with no tax mitigation at the state level. Larger corporations, such as Vermeer or John Deere, often have the treasury depth to absorb these changes or can shift their materials-heavy R&D to other states with more favorable rules.⁵ Small firms do not have this luxury. They are often “tethered” to their local community and facilities, meaning the elimination of the supply credit functions as a direct increase in the cost of doing business in Iowa.⁵

Table 3: Sector-Specific Vulnerabilities

Manufacturing Sector	Role of Supplies in R&D	Impact of Policy Change
Advanced Machinery	Steel, components, hydraulic testing fluids ⁶	High: Prototypes are expensive and material-heavy.
Bioscience/Agriscience	Reagents, seeds, biological samples, lab consumables ³	High: Laboratory research is inherently supply-intensive.
Food & Ingredients	Raw ingredients, packaging prototypes, shelf-life testing materials ¹⁵	Moderate/High: Formulation testing requires significant raw material use.
Aviation & Aerospace	Specialized alloys, composites, stress-testing hardware ⁴	Extreme: Material failure testing is critical and destructive.

The transition to a pro rata allocation under the $40 million cap further compounds the issue for SMBs. Because the final credit amount is not known until the state divides the pool among all applicants, SMBs cannot reliably factor the credit into their cash-flow projections, which are often the lifeblood of small-scale operations.³

Regional Competitive Analysis: Iowa as a Policy Outlier

The elimination of supply costs places Iowa in a disadvantageous position relative to its Midwestern neighbors. In the regional competition for industrial investment, tax structure is a primary lever for “site selection” consultants and business owners. States like Minnesota, Illinois, and Wisconsin have largely maintained conformity with the federal definition of QREs, including the full inclusion of supply costs.¹²

Table 4: Midwestern R&D Tax Credit Comparison (Projected 2027)

State	General Credit Rate	Supply Eligibility	SMB Provisions
Iowa	Max 3.5% (Capped) ³	0% (Excluded) ¹	50% Refundability ¹
Illinois	6.5% of excess ¹³	100% Eligible ¹³	5-Year Carryforward ¹³
Minnesota	10% on first $2M ¹²	100% Eligible ¹²	Partial Refundability (up to 25%) ¹⁴
Wisconsin	5.75% of excess ²¹	100% Eligible ²¹	25% Refundability ²¹

Minnesota’s tiered rate of 10% on the first $2 million of expenses is specifically designed to protect and incentivize smaller research projects.¹² Meanwhile, Wisconsin recently increased its refundability to 25% to provide immediate liquidity to R&D-heavy firms.²¹ Iowa’s move to a 3.5% capped credit with no supply inclusion effectively makes it the “high-cost” state for physical innovation in the Upper Midwest.

The risk is not merely theoretical. Evidence suggests that R&D expenditures are sensitive to the “after-tax price” of research. A 10% decrease in the price of R&D capital can result in a 25% increase in R&D expenditures over time.²⁶ Conversely, Iowa’s policy shift effectively increases the price of R&D capital for manufacturers, which will likely lead to a corresponding decline in in-state research activity.

Proposed Solution 1: The Small Business Research Parity Act

The most direct solution for the Iowa Legislature is to restore supply eligibility for a specific subset of Iowa-based manufacturers. This “Small Business Research Parity Act” would aim to protect the state’s industrial base without reopening the door to the uncapped liabilities of the legacy RAC system.

Eligibility and Mechanism

The proposed legislation would create a “Small Manufacturer” designation within the R&D Tax Credit Program. To qualify, a business must:

Maintain Iowa Focus: Have at least 50% of its total employees based in Iowa.
Size Restriction: Employ fewer than 250 full-time employees, aligning with the Small Business Administration’s common benchmarks for manufacturing sectors.⁹
Targeted Industry: Operate primarily within the advanced manufacturing or bioscience sectors (NAICS 31-33).⁴

For businesses meeting these criteria, “Qualified Research Expenses” would be redefined to include 100% of supply costs, restoring parity with the federal IRC 41 standard. This would be a targeted “carve-out” that recognizes the disproportionate impact of material costs on small-scale production.¹⁷

Strategic Advantage

By limiting the restoration of supply costs to SMBs, the state can accurately forecast and control the fiscal impact. Furthermore, this approach leverages the existing IEDA certification process, meaning it does not require the creation of a new bureaucracy. It simply provides the IEDA with the statutory authority to approve supply-based expenses for certified small firms.³

Proposed Solution 2: The Innovation Consumables Grant (ICG) Program

An alternative approach that may be more palatable to fiscal hawks is to shift the support for supply costs from the tax code into a direct-grant mechanism managed by the IEDA. This would follow the successful model of the Manufacturing 4.0 Technology Investment Program.²⁷

Integration with Manufacturing 4.0

The Manufacturing 4.0 program currently provides grants of up to $75,000 to assist SMBs with the adoption of smart technologies.²⁹ The state could create a parallel “Innovation Consumables Grant” (ICG) specifically for materials used in R&D projects that have been certified by the Center for Industrial Research and Service (CIRAS).²⁷

Under this model:

Grant Reimbursement: Instead of a tax credit, an SMB would receive a 1:1 matching grant to cover the cost of R&D supplies for a specific product development project.²⁷
Capped Exposure: The legislature could allocate a specific annual budget (e.g., $10 million) for the ICG, ensuring that it does not create a “contingent liability” on the state’s balance sheet in the same way a refundable tax credit does.⁸
Performance Ties: Grant disbursements would be tied to the completion of specific research milestones and the submission of prototype reports, ensuring that the funds are used for genuine innovation.⁵

Benefit to SMBs

A grant-based system provides more “up-front” certainty than a pro rata tax credit. For an SMB, receiving a $50,000 grant for prototype materials at the start of a project is often more valuable than waiting 18 months to receive an uncertain tax refund.³ This would transform the “lost” supply credit into a proactive investment tool.

Implementation: Ensuring Rigorous Oversight and Preventing Fraud

A common criticism of R&D incentives is that they are prone to “claim inflation,” where routine production or maintenance costs are disguised as research expenses.³² To implement either of the proposed solutions, the State of Iowa must adopt a modern, data-driven oversight framework.

The “Swanson Reed” Compliance Model

The IEDA should adopt a multi-disciplinary due diligence framework similar to those used by the most conservative private-sector tax advisors.³² This would involve:

Technical Vetting: Every application for supply-based support must include a “Technical Narrative” authored by a qualified engineer. This narrative must explicitly detail how the materials were used to resolve a specific “technological uncertainty” through a “process of experimentation”.¹²
CPA Certification: The new law already requires CPA verification for R&D claims.³ For supply-based claims, the CPA must specifically audit the inventory records to ensure that “supplies used in research are not resold” or used in commercial production, a requirement mirrored in other rigorous states like Texas.¹¹
Contemporaneous Documentation: Iowa should codify strict requirements for documentation. Claimants must provide innovation logs, testing protocols, and photographs of prototypes as part of their annual report.¹⁵

Auditing and Clawbacks

The IEDA must be granted the authority to conduct “site visits” and “unannounced audits” to verify that experimental prototypes actually exist.³⁴ Furthermore, all R&D awards (whether credits or grants) should be subject to “Clawback Provisions.” If a business is found to have misrepresented its research activities or if it relocates its R&D operations out of state within five years of receiving an award, the state should have the statutory right to recover the full value of the incentive plus interest.⁴

Table 5: Fraud Prevention Safeguards

Safeguard Mechanism	Responsibility	Outcome
Pre-Certification	IEDA & CIRAS ²⁷	Ensures only “targeted” industries and valid projects apply.
CPA Audit	Independent Third-Party ³	Validates that financial expenditures are real and accurate.
Technical Narrative	Professional Engineer ³²	Confirms the “process of experimentation” meets IRC 41 standards.
Post-Award Reporting	Taxpayer / Grantee ³	Tracks job creation, wage growth, and capital investment.

Economic Analysis: The Investment and the Return

The cost of restoring supply-based incentives must be framed not as a loss of revenue, but as a strategic investment in the state’s economic future. The manufacturing sector operates on a high “multiplier effect” that benefits all Iowans.

The Manufacturing Multiplier

Data from the Bureau of Economic Analysis (BEA) and the National Association of Manufacturers (NAM) indicates that for every $1.00 spent in manufacturing, there is a total economic impact of $2.69 to the overall U.S. economy.¹⁷ In Iowa, where the manufacturing base is particularly dense, this multiplier effect is even more pronounced. Furthermore, every direct manufacturing job supports five additional jobs in the overall economy through indirect and induced impacts.¹⁷

Fiscal Payback Calculation

While the state would forego some immediate tax revenue by restoring supply eligibility, the long-term “Return on Investment” (ROI) is significant:

Direct Labor Income: Manufacturing workers in the U.S. earn an average compensation of over $92,000.³⁷ For every $1.00 earned in direct labor income in manufacturing, an additional $4.33 in labor income is generated in the overall economy.¹⁷
Tax Base Expansion: As SMBs successfully innovate, they expand their production capacity. This leads to increased corporate income tax receipts, higher payroll tax collections from new hires, and increased sales tax revenue from their capital investments.²⁶
Public Sector Savings: Iowa State University’s research indicates that for every $1 of public money invested in industrial-academic research, taxpayers receive $1.80 in return through added tax revenue and public sector savings.³⁸

By contrast, the “savings” generated by the current policy of supply elimination ($67.1M to $125.7M annually) are a static gain.³¹ If this policy leads to a 2% decline in the growth of Iowa’s $35 billion manufacturing sector, the state would lose $700 million in annual GDP, a loss that far outweighs the tax revenue gained from cutting the credit.⁶

The Importance of Policy Change and the Risk of Inaction

The decision to eliminate supply costs from the R&D credit was a product of the fiscal environment of 2022. However, the economic landscape of 2027 and beyond will be defined by the “fourth industrial revolution” (Industry 4.0)—a transition toward smart technology, automated production, and advanced materials.¹⁶ In this environment, the “cost of physical experimentation” will be the primary barrier to entry for small firms.

Consequences of Inaction

If Iowa does not address the supply cost issue, it risks several negative outcomes:

The “Hollowing Out” of SMBs: Larger firms with national footprints will survive by moving their research departments to more favorable jurisdictions like Minnesota or Illinois, leaving Iowa with a “hollowed out” base of smaller firms that lack the resources to innovate.²
Decline in High-Wage Employment: R&D positions are among the highest-paid in the state. If the incentive to perform research in Iowa vanishes, the state will see a “brain drain” of engineers, scientists, and skilled technicians to neighboring states.²⁶
Loss of Proprietary Technology: Innovation is the cornerstone of patent generation. In Iowa, 78% of all patents impact the advanced manufacturing sector.⁶ Reducing R&D incentives will lead to a decline in Iowa-owned intellectual property, making the state’s economy more vulnerable to global market shifts.

The Path Forward

Iowa has built a reputation as one of the best states in the nation for “doing business” due to its low cost of operation and high quality of life.⁶ However, maintaining this reputation requires a tax code that recognizes the physical realities of the state’s most important industries. Restoring support for research supplies for small and medium businesses is not a step backward; it is a necessary adjustment to ensure that Iowa remains a leader in the global manufacturing economy. By coupling this support with modern, rigorous fraud prevention measures, the state can foster a culture of innovation that is both economically dynamic and fiscally responsible.

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Notice & Disclaimer: The information is current as of July 30, 2026. This whitepaper is provided for discussion purposes only and should not be construed as legal or tax advice. It is strongly recommended that you seek professional legal or tax representation to understand how the Iowa R&D tax credit and any proposed policy changes would apply to specific business circumstances.