The United States Federal Research and Development Tax Credit Framework

The federal Research and Development (R&D) tax credit, formally recognized as the Credit for Increasing Research Activities, is one of the most significant domestic tax incentives available under the current United States internal revenue system. Originally enacted in 1981 to incentivize domestic innovation, prevent the offshoring of highly technical jobs, and maintain the United States’ competitive edge in the global market, the credit provides a dollar-for-dollar reduction in a taxpayer’s federal income tax liability. For qualified small businesses, the credit can alternatively be utilized to offset up to $500,000 of employer payroll taxes (FICA), providing immediate liquidity to pre-revenue startups.

Qualified Research Expenses (QREs)

The foundation of the federal R&D tax credit rests upon the identification and quantification of Qualified Research Expenses (QREs). The federal calculation determines the credit based on the amount of QREs for the current tax year that exceed a historical base amount, utilizing either the Regular Credit method or the Alternative Simplified Credit (ASC) method. Under Section 41(b) of the Internal Revenue Code (IRC § 41), QREs are strictly delineated into three statutory categories of expenditure:

• In-House Research Wages: The largest component of most R&D claims, this includes W-2 taxable wages paid or incurred to employees who directly perform, directly supervise, or directly support qualified research activities. It is critical to note that this does not include non-taxed income or certain fringe benefits.
• In-House Research Supplies: Amounts paid or incurred for tangible supplies used or consumed directly in the conduct of qualified research. This generally encompasses raw materials for prototypes, laboratory chemicals, and testing equipment that is not subject to depreciation. It explicitly excludes land, depreciable property, and general administrative supplies. Also included in this category are amounts paid to another person for the right to use computers in the conduct of qualified research, often realized today as cloud computing expenses utilized for development environments.
• Contract Research Expenses: The law permits taxpayers to claim 65% of any expense paid or incurred to an external, third-party contractor (who is not an employee) for the performance of qualified research on behalf of the taxpayer. Treasury Regulation § 1.41-2(e) stipulates that these payments must be made pursuant to an agreement entered into prior to the performance of the research, and the taxpayer must bear the economic risk of the research while retaining rights to the resulting intellectual property.

The Statutory Four-Part Test for Qualified Research

Not all activities commonly referred to as “research and development” in a commercial sense meet the rigorous legal definition of “qualified research” under the Internal Revenue Code. IRC § 41(d) establishes a mandatory, conjunctive Four-Part Test. To be eligible for the credit, a taxpayer must demonstrate that the specific research activities satisfy all four criteria simultaneously. Furthermore, these tests must be applied separately to each specific “business component” of the taxpayer.

Exclusions from Qualified Research

Even if a project appears to satisfy the Four-Part Test, IRC § 41(d)(4) provides eight explicit statutory exclusions that disqualify research from generating the credit. Understanding these exclusions is critical for compliance and audit defense:

• Research After Commercial Production: Any research conducted after a business component has been developed to the point where it meets its basic functional and economic requirements and is ready for commercial sale or use.
• Adaptation: Research related to adapting an existing business component to a particular customer’s specific requirement or need.
• Duplication: Research related to reproducing an existing business component from a physical examination of the component itself (reverse engineering).
• Surveys and Studies: Market research, efficiency surveys, management studies, routine data collection, and routine quality control testing.
• Computer Software for Internal Use (IUS): Software developed primarily for the taxpayer’s internal operations (e.g., HR, accounting, general administrative tools) is generally excluded unless it meets an additional, highly stringent three-part “High Threshold of Innovation” test.
• Foreign Research: Research conducted outside of the United States, the Commonwealth of Puerto Rico, or any possession of the United States.
• Social Sciences: Research in the social sciences, arts, or humanities.
• Funded Research: Research funded by any grant, contract, or otherwise by another person or governmental entity.

Federal Case Law and Administrative Substantiation

The interpretation of IRC § 41 is heavily guided by evolving case law and tightening IRS administrative procedures. Historically, taxpayers could rely on broad estimates or post-facto interviews to substantiate QREs. However, recent judicial decisions have mandated rigorous, contemporaneous documentation.

The Substantiation Mandate: Siemer Milling Co. v. Commissioner In Siemer Milling Co. v. Commissioner (T.C. Memo. 2019-37), the United States Tax Court denied an Illinois wheat milling company’s entire R&D credit claim because the taxpayer failed to substantiate that a “process of experimentation” actually occurred. The IRS argued, and the Court agreed, that the taxpayer lacked documentary evidence of formulated hypotheses, systematic testing methodologies, or evaluated alternatives. The Court emphasized that simply engaging in technical work is insufficient; the taxpayer must prove that substantially all activities were part of a defined experimental process utilizing the scientific method.

Process vs. Product Research: Union Carbide Corp. v. Commissioner The Union Carbide Corp. v. Commissioner (T.C. Memo. 2009-50) decision further clarified the Process of Experimentation test, specifically distinguishing between product research and process research. The court dictated that taxpayers must develop a hypothesis, test it scientifically, analyze the data, and refine the hypothesis to qualify. The ruling heavily scrutinized claims involving process improvements (such as manufacturing optimizations), noting that routine testing of production processes does not qualify without a documented experimental framework designed to eliminate a specific technical uncertainty.

The Engineering “Know-How” Precedent: Suder v. Commissioner Conversely, the Tax Court provided a significant victory for taxpayers in Suder v. Commissioner (T.C. Memo. 2014-201). In this case, the IRS attempted to disqualify telecommunications engineering research, arguing that the taxpayer merely applied established “engineering know-how” and publicly available knowledge, thereby lacking true experimental uncertainty. The Court flatly rejected this argument, ruling that the application of known engineering principles to resolve a new design uncertainty absolutely constitutes a valid process of experimentation. The Court recognized that professional engineers inherently bring established knowledge to their work, and doing so does not invalidate the experimental nature of developing a novel business component.

The Funded Research Exclusion: Lockheed Martin and Fairchild The “Funded Research” exclusion is frequently litigated, particularly concerning government defense contractors. The legal standard hinges on two factors: economic risk and intellectual property rights. In Fairchild Industries, Inc. v. United States (71 F.3d 868), the Federal Circuit ruled that if a taxpayer is paid for research regardless of its success (e.g., a time-and-materials contract), the research is funded and ineligible. However, if payment is contingent upon the successful development of the technology (e.g., a firm-fixed-price contract), the taxpayer bears the economic risk. Furthermore, in Lockheed Martin Corp. v. United States (210 F.3d 1366), the court established that a taxpayer must retain “substantial rights” to the research results to claim the credit. Even if the government receives unlimited rights to use the technology, as long as the taxpayer retains the right to use the underlying research in its own business without paying for it, the substantial rights test is met.

IRS Form 6765, Section G Revisions Aligning with these judicial demands for strict substantiation, the IRS recently overhauled Form 6765, the primary form used to claim the credit. Beginning with tax year 2024, the IRS introduced Section G, which fundamentally alters reporting requirements. Taxpayers are now required to maintain and provide contemporaneous documentation segmented meticulously by individual Business Component. For each component, the taxpayer must identify the specific research activities performed, the individuals who performed them, the specific information sought to be discovered, and the allocation of direct research, supervision, and support wages. This shift necessitates robust, real-time project tracking systems.

The Arizona State Research and Development Tax Credit Framework

The State of Arizona operates one of the most generous and economically aggressive R&D tax credit programs in the United States. Designed legislatively to transform the state from an agrarian and real-estate-dependent economy into a hub for high-tech innovation, the Arizona R&D Tax Credit leverages the statutory definitions of federal IRC § 41 while applying localized economic parameters.

Codified primarily under Arizona Revised Statutes (A.R.S.) § 43-1168 for corporate income taxpayers and § 43-1074.01 for individual income taxpayers (pass-through entities), the state credit acts as a powerful multiplier to the federal incentive.

The Crucial Requirement of Arizona Nexus

The single most defining restriction of the Arizona R&D tax credit is the requirement of physical nexus. Under A.R.S. § 43-1168, “Qualified research includes only research conducted in this state, including research conducted at a university in this state and paid for by the taxpayer”. Therefore, a multinational corporation headquartered in Arizona cannot claim state credits for research conducted by engineering teams in California or abroad; only the W-2 wages, supplies, and contract research physically executed within Arizona’s borders are eligible to be included in the Arizona QRE calculation.

Dual Administration: ADOR and ACA

To balance tax enforcement with economic development goals, Arizona utilizes a unique dual-administrative structure, dividing jurisdiction between the Arizona Department of Revenue (ADOR) and the Arizona Commerce Authority (ACA).

The Non-Refundable Credit (Administered by ADOR)

The foundational element of the program is a non-refundable tax credit utilized to directly reduce a taxpayer’s Arizona income tax liability. ADOR is the state authority strictly responsible for auditing claims, processing Form 308 (or 308-I), and enforcing the technical calculation methodology.

Historically, Arizona utilized a heavily tiered structure designed to disproportionately reward small and mid-sized innovators. For taxable years beginning before December 31, 2030, the non-refundable credit is highly favorable:

• Base Tier: The credit is equal to 24% of the first $2.5 million of qualifying expenses that exceed the calculated base amount.
• Excess Tier: For qualifying expenses exceeding $2.5 million, the credit is equal to $600,000 plus 15% of the excess amount.

However, the Arizona legislature has enacted a phased simplification. For taxable years beginning from and after December 31, 2030, the tiered system will be abolished, and the credit will transition to a flat 20% rate across all spending tiers.

Carryforward Provisions: Due to the capital-intensive nature of R&D, many companies generate credits faster than they generate state income tax liability. ADOR dictates specific carryover management based on the vintage year of the credit. Unused non-refundable credits generated in taxable years beginning prior to January 1, 2022, may be carried forward for 15 consecutive taxable years. Conversely, unused credits generated from and after December 31, 2021, are restricted to a 10-year carryforward period.

The Refundable Credit Mechanism (Administered by the ACA)

Recognizing that non-refundable credits offer little immediate value to pre-revenue technology startups, the Arizona legislature established a refundable component in 2010, overseen by the Arizona Commerce Authority. The ACA treats this not merely as tax policy, but as an economic development grant meant to inject immediate cash flow into small, high-growth enterprises.

To be eligible for the refundable option, a taxpayer must meet stringent statutory criteria:

• Size Limitation: The company must employ fewer than 150 full-time employees worldwide as of the last day of the taxpayer’s taxable year.
• Refund Calculation: The refund is calculated at 75% of the “excess credit” (the portion of the current year’s R&D credit that exceeds the current year’s Arizona tax liability).
• The Waiver Penalty: If a taxpayer elects to take the cash refund, the remaining 25% of the excess credit is permanently forfeited and cannot be carried forward.

Because this program represents an actual cash outlay from the state treasury, the ACA enforces an aggregate annual statewide cap, which was recently increased from $5 million to $10 million. Due to intense demand, this cap is historically exhausted rapidly when the application window opens on the first business day of the calendar year. Furthermore, to distribute the funds more equitably, the ACA instituted administrative guidelines capping the maximum refund at $100,000 per taxpayer in a single tax year. To secure this refund, a taxpayer must pre-apply electronically via the ACA’s “EASY” system, pay a 1% non-refundable processing fee, and receive a formal Certificate of Qualification prior to filing their tax return with ADOR.

The University Research & Development Enhancement

To stimulate collaboration between private industry and state educational institutions, Arizona offers a supplementary non-refundable credit. If a taxpayer makes “basic research payments” to a university under the jurisdiction of the Arizona Board of Regents (such as Arizona State University, Northern Arizona University, or the University of Arizona), they are eligible for an additional 10% credit on those specific expenditures. This program is subject to a separate $10 million annual statewide cap managed by the ACA, requiring pre-certification before the credit can be claimed via ADOR. This specific enhancement carries a restricted 5-year carryforward period.

The Economic Metamorphosis of Gilbert, Arizona

The practical application and economic impact of these federal and state tax incentives are most vividly demonstrated by examining the industrial evolution of Gilbert, Arizona. Located in the southeast valley of the greater Phoenix metropolitan area, Gilbert presents a remarkable macroeconomic case study of a municipality that successfully engineered a transition from an agrarian economy to a sophisticated nexus of advanced manufacturing, life sciences, and digital technology.

From Agriculture to Urban Agglomeration

Gilbert’s origins were entirely dependent on transit and natural resources. In 1902, the Arizona Eastern Railway sought a right-of-way to build a freight line between Phoenix and Florence. Local landowner William “Bobby” Gilbert donated property to establish a rail siding, around which a small community coalesced.

The defining catalyst for the town’s early economy was water infrastructure. The construction of the Consolidated Canal in 1903 and the completion of the Roosevelt Dam in 1911 secured a reliable water supply in the arid Sonoran Desert. This infrastructure transformed the surrounding landscape into highly productive agricultural land. By the time the town was officially incorporated in 1920, it was rapidly expanding its production of alfalfa and was globally recognized throughout the 1920s and 1930s as the “Hay Shipping Capital of the World”. Following World War II, baby boom farmers in the region vertically and horizontally integrated their operations, expanding into dairy farming and cattle ranching to withstand economic fluctuations.

For decades, Gilbert remained a static, rural enclave. As late as 1970, the town’s population hovered around a mere 1,971 residents. The pivotal turning point occurred in the mid-1970s. Anticipating the inevitable eastward suburban sprawl of the Phoenix metropolitan area, the Gilbert Town Council executed a bold, 53-square-mile strip annexation of surrounding county land. This farsighted urban planning move provided the vast geographic footprint required for explosive growth.

Coupled with the construction of the US-60 freeway in the early 1980s, which provided rapid access to the greater metropolitan job markets, Gilbert’s population skyrocketed. From a population of 5,575 in 1980, the community expanded exponentially to over 292,000 residents by 2024, shedding its “town” moniker in scale, if not in legal structure, to become the largest incorporated town in the United States and the fifth-largest municipality in Arizona.

Architectural Drivers of Modern Industrial Growth

As Gilbert’s population expanded, municipal leaders recognized the need to cultivate a sustainable, high-wage employment base to prevent the area from becoming a mere bedroom community. Through deliberate economic development strategies, Gilbert attracted world-class companies. Several core factors drove this industrial migration:

This calculated environment has successfully incubated a diverse array of highly technical industries. The following five case studies illustrate how distinct sectors have taken root in Gilbert, the historical forces that drove their local development, and a rigorous analysis of how their specific technical operations satisfy the requirements of both the federal and Arizona state R&D tax credit frameworks.

Industry Case Studies and Tax Credit Eligibility Analysis

Aerospace and Defense — Northrop Grumman

The Origin and Development of Aerospace in Gilbert: The development of the aerospace and defense (A&D) industry in Gilbert and the broader Phoenix East Valley is inextricably linked to the region’s military history during World War II. Arizona’s arid climate and consistently clear skies (averaging 330 Visual Flight Rules days per year) created an optimal, year-round environment for military aviation training and equipment testing. As military installations like Williams Air Force Base (located immediately adjacent to Gilbert) expanded, major defense prime contractors migrated to the region to be in close proximity to their primary customer.

When the Cold War ended and Williams Air Force Base was decommissioned in 1993, local leadership executed a visionary redevelopment strategy, transforming the 3,000-acre site into the Phoenix-Mesa Gateway Airport and a surrounding aerospace employment corridor. This pivot allowed the region to absorb the existing specialized engineering talent and transition into a commercial and defense aerospace hub.

Northrop Grumman’s presence in Gilbert is a direct result of this historical trajectory and corporate consolidation. The specific Gilbert operations originated in the early 1990s under legacy companies focused on satellite technology. Through a series of acquisitions—most notably the 2018 purchase of Orbital ATK, a leader in civil and national security space systems—Northrop Grumman solidified its footprint in the town. Today, Gilbert is home to Northrop Grumman’s massive Satellite Manufacturing Facility (SMF). Following a recent 120,000-square-foot expansion, the 435,000-square-foot campus is recognized as one of the largest and most advanced spacecraft assembly and test facilities in the United States. The facility designs and manufactures high-reliability space hardware, including the Joint Polar Satellite System (JPSS) for NASA and NOAA, and the Habitation and Logistics Outpost (HALO) module for the Lunar Gateway space station.

Application of Federal and State R&D Tax Credit Laws: The design, manufacturing, and testing of low-Earth orbit and geosynchronous satellites represent the zenith of technical complexity, cleanly satisfying the “Technological in Nature” requirement of IRC § 41 by relying fundamentally on physics, materials science, and aerospace engineering.

When Northrop Grumman engineers in Gilbert attempt to design lightweight thermal shielding capable of surviving atmospheric reentry, or develop radiation-hardened telemetry circuitry for the HALO module, they face significant technical uncertainties regarding design capability and optimal methodology. To resolve these uncertainties, they engage in a rigorous “Process of Experimentation.” Utilizing computational fluid dynamics modeling, thermal vacuum chamber testing, and launch vibration simulations, the engineers evaluate multiple design alternatives to improve the performance and reliability of the business component (the satellite). As established in Suder v. Commissioner, the fact that these engineers rely on established aerospace engineering principles does not invalidate the experimental nature of applying those principles to novel satellite configurations.

A paramount consideration for Northrop Grumman in claiming the federal credit is navigating the statutory exclusion for “Funded Research” under IRC § 41(d)(4)(H). Because much of their work in Gilbert is contracted by NASA or the Department of Defense, they must carefully structure their contracts to align with the precedents set in Fairchild Industries and Lockheed Martin. If Northrop Grumman develops the JPSS satellites under a firm-fixed-price contract where they are only paid upon successful delivery and on-orbit performance, they bear the economic risk of failure. Furthermore, if the contract allows Northrop Grumman to retain “substantial rights” to use the underlying engineering processes and technological breakthroughs in future commercial satellite platforms, the research is not considered “funded” by the government and remains eligible for the tax credit.

Because these extensive R&D activities are physically conducted at the Gilbert SMF campus, the associated expenses—specifically the W-2 wages of the aerospace engineers, the massive costs of specialized raw materials and prototype components, and the expenses for running computational simulations—perfectly satisfy the physical nexus requirement of A.R.S. § 43-1168. Consequently, Northrop Grumman can leverage these massive QREs to offset their Arizona corporate income tax liability through ADOR’s non-refundable credit program.

Life Sciences and Clinical Oncology — Banner MD Anderson Cancer Center

The Origin and Development of Life Sciences in Gilbert: The meteoric rise of the life sciences, biotechnology, and healthcare sector in Gilbert was primarily driven by rapid population growth and shifting demographics. As the Phoenix East Valley expanded, an aging population created an immense, sustained demand for advanced medical services, specialized clinical care, and assisted living facilities.

Recognizing this economic potential, the Gilbert Town Council strategically designated the “Central Corridor” specifically for healthcare and bioscience development, streamlining zoning and infrastructure to attract major medical institutions. This planning culminated in a landmark healthcare milestone in 2011. Banner Health, one of the nation’s largest nonprofit hospital systems, entered into a historic, clinically integrated partnership with The University of Texas MD Anderson Cancer Center—globally recognized as a premier institution for oncology research and care.

Together, they built the $107-million Banner MD Anderson Cancer Center on the campus of the Banner Gateway Medical Center in Gilbert. This facility represented MD Anderson’s first full clinical extension outside of Houston, Texas, bringing a multidisciplinary, research-driven approach to the Southwest. The campus has experienced continuous growth, recently completing a $243-million, 351,000-square-foot patient tower expansion. Crucially, the site features a specialized $1 million Investigational Cancer Therapeutics Research Unit, explicitly designed to conduct first-in-human and early therapeutic clinical trials. Today, Gilbert’s healthcare cluster boasts over 2.2 million square feet of clinical research space, establishing the town as a regional powerhouse for bioscience.

Application of Federal and State R&D Tax Credit Laws: Clinical research, particularly in the highly regulated field of oncology, represents a massive and often underutilized source of Qualified Research Expenses. The activities conducted within Banner MD Anderson’s Investigational Cancer Therapeutics Research Unit align perfectly with the statutory requirements of the R&D tax credit.

When investigators at the Gilbert facility conduct Phase I, Phase II, and Phase III clinical trials—such as testing a novel immunotherapy agent against advanced solid tumors or evaluating the optimal dosing of a new chemotherapeutic formulation—they are fundamentally engaging in activities that are “Technological in Nature,” relying heavily on the biological sciences, pharmacology, and medicine. The core objective of these trials is the “Elimination of Uncertainty” regarding a new business component (the investigational drug or treatment protocol). Researchers must resolve uncertainties related to the drug’s toxicity, appropriate dosing methodologies, pharmacokinetic absorption rates, and its ultimate efficacy in shrinking tumors.

The execution of a clinical trial is the absolute embodiment of the “Process of Experimentation”. Furthermore, clinical research inherently protects taxpayers from the substantiation failures seen in Siemer Milling Co. v. Commissioner. The Tax Court penalized Siemer Milling for lacking a documented scientific method. Clinical trials, however, are governed by strict FDA protocols and Institutional Review Boards (IRBs). Every trial requires a highly detailed, prospectively documented hypothesis (the study protocol), rigorously controlled variables, systematic evaluation of alternatives (comparing the new drug against standard-of-care treatments or placebos), and meticulous data analysis. This mandatory regulatory documentation serves as unimpeachable evidence that a scientific process of experimentation occurred.

If Banner Health (or independent pharmaceutical sponsors conducting trials at the facility) funds these trials and retains the economic risk and rights to the resulting data, they can claim the federal credit. For state purposes, because the principal investigators, clinical research nurses, and lab technicians are physically performing these services in Gilbert, their W-2 wages constitute eligible Arizona QREs under A.R.S. § 43-1168. Additionally, any laboratory supplies or chemical reagents consumed during these specific Gilbert-based trials qualify for the Arizona non-refundable credit, significantly offsetting state tax liabilities while advancing critical cancer research.

Sustainable Technology and Materials Science — Footprint and Li-Cycle

The Origin and Development of Clean Technology in Gilbert: In recent years, Arizona has aggressively positioned itself as a premier destination for “clean technology,” renewable energy, and the emerging electric vehicle (EV) supply chain. This shift is supported by state-level legislative incentives, such as the Quality Jobs Through Renewable Industries program, and the state’s natural advantages in solar energy generation. Gilbert recognized this macroeconomic trend and actively recruited sustainable manufacturing firms, resulting in the Clean Technology sector growing by 181% in the town over a recent five-year period. Two pioneering companies, Footprint and Li-Cycle, perfectly encapsulate this ecosystem.

Founded in 2014 by two former Intel engineers, Footprint established its headquarters and a massive 135,000-square-foot complex in Gilbert. The founders originated their concept after observing that plastic packaging outgassed harmful chemicals onto silicon computer wafers during shipping, hypothesizing that similar chemical leaching occurred when plastic was used for food packaging. Footprint utilizes advanced materials science to engineer compostable, biodegradable, plant-based fiber alternatives to single-use plastics.

Complementing this sustainable ethos is Li-Cycle, an industry leader in lithium-ion battery resource recovery. To serve the rapidly expanding EV market and battery manufacturing footprint in the Western United States, Li-Cycle selected Gilbert for its first-of-its-kind commercial “Spoke” recycling facility. This facility is engineered to process up to 10,000 tonnes of end-of-life EV batteries and manufacturing scrap annually. Utilizing a proprietary hydrometallurgical technology, the Gilbert Spoke processes full EV battery packs without hazardous manual dismantling, safely recovering up to 95% of critical raw materials (such as lithium, cobalt, and nickel) in the form of “black mass” to be fed back into the supply chain.

Application of Federal and State R&D Tax Credit Laws: The operations of both Footprint and Li-Cycle are deeply rooted in chemical engineering and materials science, ensuring their R&D activities easily pass the “Technological in Nature” test of IRC § 41.

For Footprint, the development of novel plant-based coatings that can safely hold hot or freezing liquids without degrading over 180 days represents the creation of a new “Business Component”. When Footprint engineers blend different ratios of agricultural waste, virgin wood fibers, and recycled kraft paper, they are systematically evaluating alternatives to eliminate uncertainties regarding the tensile strength, moisture resistance, and biodegradability of their packaging. This trial-and-error formulation process is the exact type of experimentation protected by the R&D credit.

Li-Cycle’s operations present a highly relevant application of the “process research” concepts scrutinized in Union Carbide Corp. v. Commissioner. Li-Cycle is not necessarily developing a new physical product to sell to consumers; rather, their R&D focuses on improving a highly complex industrial process—the chemical extraction and recovery of black mass from varied and evolving battery chemistries. Because the chemical makeup of incoming EV batteries constantly changes, Li-Cycle must continuously experiment with their hydrometallurgical fluid dynamics and separation techniques to optimize yield and minimize environmental discharge. To qualify for the credit under Union Carbide standards, Li-Cycle must document their process improvements rigorously, proving they formulated hypotheses on chemical extraction rates and systematically tested them, rather than simply claiming routine production adjustments.

Financially, the wages of the materials scientists, chemical engineers, and environmental technicians working at the Footprint and Li-Cycle facilities in Gilbert, alongside the raw materials and chemicals consumed during testing, constitute prime QREs. Because these companies are physically operating within the town, they satisfy the ADOR’s strict physical nexus rule. Furthermore, if these companies are in an early, pre-revenue phase or operating at a loss while scaling, and if they maintain fewer than 150 employees, they could apply through the ACA’s EASY system to convert 75% of their excess state credit into a direct cash refund (up to $100,000), providing critical capital to fund further sustainable research.

Advanced Manufacturing and Thermal Management — Silent-Aire

The Origin and Development of Advanced Manufacturing in Gilbert: Gilbert’s advanced manufacturing sector has grown symbiotically with the broader technology trends of the Phoenix metropolitan area. Specifically, the region has become one of the most concentrated data center markets in the world. This influx is driven by Arizona’s exceptionally low risk for catastrophic natural disasters (earthquakes, hurricanes, tornadoes) and the availability of highly reliable, affordable commercial electricity from providers like the Salt River Project (SRP).

However, hyperscale data centers generate immense thermal loads, creating a massive secondary market for specialized industrial cooling infrastructure. Silent-Aire, a technology-driven manufacturing firm founded in Edmonton, Canada in 1994, recognized this regional demand and established its U.S. Headquarters and a 21-acre advanced manufacturing campus in Gilbert in 2017. Recently acquired by Johnson Controls, Silent-Aire specializes in designing, engineering, and manufacturing custom HVAC solutions and modular data centers. As the exponential growth of Artificial Intelligence (AI) and high-density semiconductor technology produces hotter chips, Silent-Aire operates at the vanguard of thermal management, engineering sophisticated Coolant Distribution Units (CDUs) to facilitate the transition from traditional air cooling to precision liquid cooling.

Application of Federal and State R&D Tax Credit Laws: Designing thermal management infrastructure for hyperscale, mission-critical data centers is not a routine assembly-line process; it requires custom, highly technical engineering.

When Silent-Aire engineers develop a novel high-capacity CDU utilizing a specific 25% propylene glycol mixture to achieve an ultra-precise 9.4°F approach temperature, they are engaging in activities aimed at improving the performance and efficiency of a business component. Because every hyperscale data center has unique spatial constraints, varying heat loads, and different liquid-cooling configurations, Silent-Aire faces technical uncertainties regarding fluid dynamics, thermodynamic efficiency, and system scalability.

The legal framework established in Suder v. Commissioner is highly applicable to Silent-Aire’s operations. The IRS often scrutinizes mechanical engineering, arguing that building a cooling unit simply relies on established principles of thermodynamics and standard engineering “know-how” without true experimental risk. However, Suder protects taxpayers by confirming that the application of those known principles to resolve a new design uncertainty (e.g., cooling a denser AI chip architecture than previously attempted) absolutely qualifies as a process of experimentation. When Silent-Aire engineers model thermal pathways, simulate failure conditions, and test prototype CDUs, they are executing the scientific method required for the credit.

Consequently, the W-2 wages paid to the mechanical engineers, CAD draftsmen, and quality assurance testers working at the Gilbert manufacturing facilities, along with the raw materials (copper, specific coolants, specialized pumps) consumed in building and testing the custom HVAC prototypes, are fully eligible QREs. Because the manufacturing and testing occur within Gilbert, the activities qualify for the Arizona non-refundable credit under A.R.S. § 43-1168, allowing Silent-Aire to drastically reduce their state corporate tax liability and reinvest in their 146,000-square-foot Gemini facility.

Software and Digital Technology — Deloitte and GoDaddy

The Origin and Development of the Software Sector in Gilbert: To ensure economic resilience, Gilbert deliberately cultivated a diversified portfolio that extended beyond heavy manufacturing into digital technology and professional services. The town capitalized on a broader macroeconomic trend: the exodus of technology firms from coastal markets like California seeking more affordable operating environments. Gilbert offered streamlined regulatory burdens, a highly educated workforce fueled by the largest engineering school in the nation at Arizona State University, and high quality-of-life amenities.

This environment attracted major tech conglomerates. GoDaddy, an American publicly traded internet domain registry and web hosting giant, established a massive corporate presence in the immediate Tempe/Gilbert region, supporting infrastructure that manages over 82 million domains for 20 million small business customers.

Following suit, in 2018, the global professional services firm Deloitte selected the Rivulon development in Gilbert as the site for a new 200,000-square-foot U.S. Delivery Center. This facility was designed specifically to employ over 2,500 IT-driven professionals focused on developing and implementing emerging technology solutions—including cloud architecture, robotic and cognitive automation, artificial intelligence, and proprietary software applications—for a vast array of private and public sector clients.

Application of Federal and State R&D Tax Credit Laws: Software development represents a highly lucrative but intensely audited frontier for the R&D tax credit. Because software development does not require heavy machinery or physical material prototypes, the calculation is overwhelmingly driven by the W-2 wages of the software engineers and developers, maximizing the financial yield of the credit.

When developers at Deloitte’s Gilbert Delivery Center design complex, agentic AI models or engineer custom cloud-based automation tools to integrate with a client’s legacy systems, they inherently rely on the principles of computer science, satisfying the “Technological in Nature” test. Technical uncertainty frequently arises regarding optimal algorithmic structure, database scalability, and secure API integrations. The process of writing code, compiling, debugging, evaluating logic paths, and optimizing response times constitutes a systematic process of experimentation.

However, companies like GoDaddy and Deloitte must navigate a perilous statutory trap: the Internal Use Software (IUS) exclusion under IRC § 41(d)(4)(E). If developers in Gilbert are creating software intended to be sold, leased, or hosted for third-party customers (e.g., GoDaddy developing a new customer-facing website builder platform), the standard four-part test applies. But, if the developers are creating software solely for the company’s internal operations (e.g., Deloitte building an internal HR tracking tool or GoDaddy building a proprietary internal server monitoring dashboard), the software is presumed excluded. To overcome this exclusion, the software must pass an additional three-part “High Threshold of Innovation” test. The taxpayer must prove that the software is highly innovative (resulting in a substantial reduction in cost or improvement in speed), involves significant economic risk in its development, and cannot be purchased commercially off-the-shelf without major modifications.

Furthermore, software companies must strictly adhere to the new IRS Form 6765 Section G reporting requirements. Deloitte and GoDaddy cannot simply aggregate the wages of all IT employees in Gilbert. They must maintain contemporaneous, time-tracked documentation that isolates the QREs by specific software modules or features (the “Business Component”). By maintaining rigorous agile development logs and code-commit histories, these firms can substantiate their activities, securing massive non-refundable tax offsets against their Arizona income tax liabilities under A.R.S. § 43-1168 for the wages paid within the state.

Final Thoughts

The convergence of rigorous federal tax statutes, state-level incentive mechanics, and methodical municipal urban planning has allowed Gilbert, Arizona, to transform from a quiet agricultural outpost into a highly diversified, technologically advanced economic powerhouse. By strategically aligning their operations with the requirements of the federal IRC § 41 credit and Arizona’s aggressive A.R.S. § 43-1168 framework, companies across the aerospace, life sciences, clean technology, advanced manufacturing, and software sectors can significantly mitigate the immense financial risks associated with pioneering technical research.

The continued vitality of these regional industries, however, will depend entirely on their administrative rigor. As demonstrated by recent IRS modifications to Form 6765 and stringent judicial precedents set in cases like Siemer Milling and Union Carbide, taxpayers must systematically document their processes of experimentation at the business component level. Those that successfully navigate the evolving nuances of federal case law, the limitations of “funded research,” the complexities of internal-use software, and the administrative caps of the Arizona Commerce Authority will secure a profound competitive advantage while fueling the continued economic ascendancy of the region.

The information in this study is current as of the date of publication, and is provided for information purposes only. Although we do our absolute best in our attempts to avoid errors, we cannot guarantee that errors are not present in this study. Please contact a Swanson Reed member of staff, or seek independent legal advice to further understand how this information applies to your circumstances.