R&D Tax Credit Experts
Examples of Expenses that Qualify for R&D Tax Credits
Learn the expenses that qualify for R&D credits, understand R&D credit limits and limitations, and discover how claiming R&D tax credits can deliver significant savings — for businesses in Florida, California, North Carolina, Texas, and across the U.S.
$20B+
R&D Credits Claimed Annually in the U.S.
$0.14–0.20
Federal Credit Per Dollar of Qualifying R&D
20 Years
Credit Carryforward Period
$500K
Max Payroll Tax Offset for Startups (Annual)
The Research & Development Tax Credit (R&D tax credit) is one of the most powerful incentives in the U.S. tax code — yet countless businesses leave it unclaimed. Whether you operate in aerospace, manufacturing, medical research, gaming, solar energy, or virtually any other innovation-driven field, Engineered Tax Services | ETS can help you identify qualifying expenses, navigate R&D credit limits, and maximize your claim.
At Engineered Tax Services | ETS, our R&D tax relief experts help businesses of all sizes — from pre-revenue startups to established enterprises — document and file successful R&D tax credit claims. This guide explains what expenses can qualify for R&D credit, how the credit works, how to claim it, and how to protect your claim in the event of an audit. We serve clients in Florida, California, North Carolina, Texas, and nationwide.
What Qualifies as R&D Tax Credit?
Before diving into specific expenses, understanding what expenses can qualify for R and D credit activity is essential. The IRS applies a four-part test — the Qualified Research Activities (QRA) test — to evaluate eligibility. Every activity must satisfy all four requirements:
Permitted Purpose
The research must aim to create new or improved products, processes, software, techniques, formulas, or inventions for your business.
Technological in Nature
Activities must rely on principles of physical, biological, computer, or engineering sciences — not simply business experience or intuition.
Elimination of Uncertainty
The activity must be intended to discover information that is not already publicly known, resolving genuine technical uncertainty.
Process of Experimentation
The business must use systematic experimentation — modeling, simulation, testing, or trial and error — to evaluate alternatives.
Understanding how does the R&D tax credit work in practice means recognizing that qualifying activities span a far wider range of industries and job roles than most business owners realize. Engineers, scientists, software developers, architects, and even certain managers may qualify — as long as their time is spent on activities that pass the four-part test.
What Expenses Can Qualify for R&D Credit?
The IRS recognizes four primary categories of Qualified Research Expenses (QREs) when calculating R&D tax credit claims.
Below are detailed examples of expenses that qualify for R&D credits in each category.
1. Wages and Salaries (W-2 Compensation)
Employee wages typically represent the single largest component of any R&D credit claim. Qualifying compensation includes salaries paid to employees who:
- Directly perform qualified research — engineers, developers, scientists, architects, lab technicians, and similar roles
- Directly supervise qualifying research — R&D team leads, managers, CTOs, and principal architects
- Directly support qualifying research — QA testers, data analysts, and technical writers who support specific R&D projects
ℹ️ Only the percentage of time an employee spends on qualifying activities is counted. An engineer who devotes 60% of their time to qualifying R&D would have 60% of their wages included as a QRE.
2. Supplies Used in Qualified Research
Tangible materials consumed or used in qualified research are eligible. Examples include:
- Raw materials used in prototype development and product testing
- Laboratory chemicals, reagents, and biological materials
- Electronic components used in robotics or hardware R&D
- Construction materials used to test new building methods
- Solar panels, inverters, and energy storage components used in R&D
- 3D printing materials for engineering prototypes
ℹ️ Depreciable capital equipment generally does not qualify as a supply, though related depreciation may be deductible separately.
3. Contract Research Expenses (Third-Party Research)
When a company hires outside contractors or consultants to perform qualified research on its behalf, 65% of those payments may qualify as R&D expenses, provided:
- The research is conducted on behalf of the taxpayer
- The taxpayer retains substantial rights to the research results
- The taxpayer bears the economic risk if the research is unsuccessful
Examples include: outsourced software development, third-party engineering testing, contracted scientific research, clinical trial organizations (CROs), and specialized blockchain protocol developers.
4. Cloud Computing and Computer Rental Costs
In a major update for modern businesses, the IRS now allows cloud computing costs to qualify as QREs when computing resources are used in the actual conduct of qualified research. This is especially valuable for companies in gaming and cloud computing, blockchain, artificial intelligence, and data-intensive industries.
Qualifying costs include:
- AWS, Azure, or Google Cloud fees dedicated to R&D workloads
- SaaS or platform fees used directly in developing or testing new software
- Leased server time and on-demand GPU compute for AI model training
- Dedicated R&D simulation environments and virtual testing platforms
R&D Credit Limits and Tax Credit Limitations
Maximizing the benefits of R&D tax credits requires a clear understanding of R&D credit limits and key R&D tax credit limitations.
Here is what every taxpayer and advisor should know:
The Two Credit Calculation Methods
| Method | How It Works | Best For |
|---|---|---|
| Regular Research Credit (RRC) | 20% of QREs exceeding a calculated base amount, determined by historical R&D intensity and prior gross receipts | Companies with well-documented historical R&D spending and stable gross receipts |
| Alternative Simplified Credit (ASC) | 14% of QREs exceeding 50% of the average QREs for the prior three years; 6% if no prior-year R&D expenses | Most businesses — simpler calculation, easier to document and defend under audit |
Key R&D Tax Credit Limitations to Understand
- General Business Credit (GBC) Limitation: The R&D credit is part of the General Business Credit and is subject to overall annual limits. Generally, GBC cannot reduce regular tax below the greater of tentative minimum tax or 25% of net regular tax above $25,000.
- Carryback and Carryforward: Unused R&D credits may be carried back 1 year and carried forward up to 20 years — preserving the value of credits that cannot be used immediately.
- IRC Section 280C Reduction: The R&D credit reduces the amount of research expenses deductible under IRC Section 174, unless the taxpayer elects a reduced credit under Section 280C(c)(2).
- Small Business AMT Relief: Eligible small businesses with average gross receipts under $50 million can apply the R&D credit against Alternative Minimum Tax — removing a key barrier for growing companies.
- Startup Payroll Tax Offset: Qualified small businesses (fewer than 5 years of gross receipts, under $5 million in current revenue) may offset up to $500,000 per year in payroll taxes — making the credit valuable even before profitability.
- State R&D Credit Limitations: State credits vary significantly. California offers a 15% R&D credit (FTB Form 3523), while North Carolina, Texas, and Florida businesses should evaluate available state incentives that can stack on top of the federal credit.
Benefits of R&D Tax Credits
The benefits of R&D tax credits extend well beyond a line on a tax return. Here is why businesses across every major industry are increasingly prioritizing claiming R&D tax credits:
Dollar-for-Dollar Tax Reduction
Unlike deductions that reduce taxable income, the R&D credit provides a dollar-for-dollar reduction in actual tax liability.
Startup Payroll Tax Offset
Pre-revenue startups can apply up to $500,000 per year against payroll taxes — generating cash savings before they owe any income tax.
State-Level Stacking
Many states — especially California and North Carolina — offer R&D credits that compound federal benefits for businesses in those markets.
20-Year Carryforward
Unused credits carry forward up to 20 years, so investment in R&D today generates lasting tax value even if current-year liability is low.
Competitive Advantage
Funds recovered through R&D credits can be reinvested in further innovation, hiring, equipment, and market expansion.
Accessible for Small Businesses
Both large corporations and small businesses — including sole proprietorships, S-corps, and partnerships — can benefit from the R&D credit.
Industries That Qualify for R&D Tax Credits
One of the most persistent misconceptions about the R&D tax credit is that it applies only to pharmaceutical companies or Silicon Valley technology firms. In reality, a wide range of industries qualify.
Engineered Tax Services works with clients in every sector listed below — helping them identify qualifying activities and build successful R&D tax credit claims.
Aerospace
Designing and testing new airframes, propulsion systems, avionics, navigation, and safety systems all generate substantial qualifying expenses. Aerodynamic simulation and structural testing are classic qualifying activities for aerospace companies in FL, CA, TX, and NC.
Architects & Engineers
Firms developing innovative structural systems, energy-efficient building solutions, new materials, or using computational parametric modeling often qualify for significant credits. From LEED design research to custom structural engineering, architectural firms have compelling R&D claims.
Manufacturers
Manufacturers represent one of the largest R&D credit categories. Developing new product designs, improving processes, creating prototypes, automating production lines, and testing new materials for performance or safety are all qualifying activities.
Real Estate Investors & Developers
Developers who create new building techniques, energy-efficient construction methods, or proprietary property management platforms can qualify. Combined with a cost segregation study — one of ETS's core services — real estate investors can maximize tax savings through both accelerated depreciation and R&D credits simultaneously.
Construction
Construction companies that develop new methods to improve structural integrity, efficiency, safety compliance, or sustainability qualify. Designing custom structural solutions, testing new materials, and developing proprietary project management systems can all generate qualifying expenses.
Financial Services
Banks, fintech companies, insurance firms, and investment platforms developing new risk models, fraud detection algorithms, customer-facing tools, or regulatory compliance systems generate qualifying R&D expenses. Financial services firms in CA, FL, TX, and NC are increasingly realizing their eligibility.
Medical Research & Healthcare
Banks, fintech companies, insurance firms, and investment platforms developing new risk models, fraud detection algorithms, customer-facing tools, or regulatory compliance systems generate qualifying R&D expenses. Financial services firms in CA, FL, TX, and NC are increasingly realizing their eligibility.
Gaming & Cloud Computing
Game developers investing in new engines, rendering pipelines, multiplayer infrastructure, and AI-driven experiences generate significant qualifying expenses. Cloud computing companies developing new architecture, distributed systems, or data storage innovations qualify as well — from indie studios to major platforms.
Blockchain & Cryptocurrency
Companies building new consensus mechanisms, smart contract protocols, DeFi platforms, or distributed ledger infrastructure are engaged in exactly the innovation the R&D credit rewards. Protocol engineers, security researchers, and blockchain developers commonly generate qualifying wages and expenses.
Robotics & Automation
Companies developing autonomous systems, machine vision, motion control, and human-robot interaction regularly generate significant R&D qualifying expenses. Industrial automation and consumer robotics firms often have the highest concentrations of qualifying technical personnel in any industry.
Hospitality
Hotels, restaurants, and hospitality groups developing proprietary booking platforms, AI-driven guest experience systems, energy management technologies, or innovative food preparation processes may qualify. Technology-driven hospitality companies in FL, TX, NC, and CA are finding real value in R&D credit claims.
Solar & Renewable Energy
Solar companies developing new photovoltaic cell technologies, storage systems, grid integration solutions, and energy efficiency software qualify strongly. With powerful state incentives in California, North Carolina, Florida, and Texas layering on top of federal R&D credits, the combined benefit for solar companies can be extraordinary.
Small Business
Small businesses often overlook the R&D credit, assuming it's for large corporations only. In fact, businesses with under $50 million in gross receipts enjoy expanded benefits, including AMT offset and payroll tax credit elections. Boutique software companies, specialty manufacturers, and innovative service providers all qualify for claiming R&D tax credits.
How to Claim R&D Tax Credits: Step-by-Step
Knowing how to claim R&D tax credit requires careful documentation, strategic planning, and expert support.
Here is an overview of the R&D tax credit claims process:
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1Identify Qualifying Activities Catalog all projects and activities that may satisfy the four-part test. Review employee roles, project records, development timelines, and technical narratives to build a comprehensive activity inventory.
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2Gather Documentation Collect payroll data, time records, vendor invoices, supply receipts, project plans, technical reports, and contracts for third-party research. Contemporaneous documentation is critical for defending your claim.
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3Calculate Qualified Research Expenses (QREs) Allocate qualifying wages by time study or project, identify qualifying supplies and contractor costs, and determine cloud computing fees attributable to qualified research activities.
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4Choose Your Credit Calculation Method Work with R&D tax relief experts to determine whether the Regular Research Credit (RRC) or Alternative Simplified Credit (ASC) produces the most favorable result for your specific situation.
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5File IRS Form 6765 Report the credit on Form 6765 and attach it to your federal income tax return. For the payroll tax offset election, also file Form 8974 with your quarterly payroll returns.
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6File State R&D Credit Forms California businesses file FTB Form 3523. North Carolina businesses file Form NC-478G. Florida and Texas businesses should evaluate available incentives. Many states allow multi-year carryforwards as well.
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7Consider Lookback Studies If you've been conducting qualifying R&D for several years without claiming the credit, amended returns can typically recover credits for the prior three open tax years — potentially generating a significant lump-sum recovery.
Engineered Tax Services | ETS provides end-to-end support for claiming R&D tax credits — from initial eligibility assessment through full documentation, credit calculation, and filing. Our R&D tax relief experts work alongside your existing CPA or tax team to ensure every qualifying dollar is captured.
R&D Tax Credit Audits: How to Prepare
As R&D tax credit claims have grown in popularity, IRS scrutiny has increased. Understanding how to prepare for an R&D tax credit audit — and working with experienced advisors before one occurs — is essential for protecting your investment.
⚠️ Common Triggers for R&D Tax Credit Audits
- Large year-over-year increases in claimed R&D credit amounts
- Industries the IRS views as lower-risk for genuine R&D without clear technology development evidence
- Inconsistencies between claimed activities and the company's standard business description
- Claims filed by businesses belonging to IRS enforcement focus groups or geographic clusters under review
- Inadequate contemporaneous documentation at the time of filing
How to Prepare for an R&D Tax Credit Audit
The best way to prepare for R&D tax credit audits is to build a defensible claim from day one.
Key preparation steps:
Documentation First
Maintain contemporaneous records of qualifying activities, including project descriptions, technical narratives, employee time studies, and management approvals. Build your file before filing, not after.
Nexus to Four-Part Test
Be able to demonstrate that each claimed activity passes the four-part test at the project level with specific evidence — not just general business descriptions.
Technical Personnel Interviews
Conduct structured interviews with engineers, developers, and scientists to capture institutional knowledge about uncertainty, experimentation, and discovery before it fades or personnel turn over.
Financial Record Alignment
Ensure payroll allocations, contractor agreements, and supply invoices are clearly tied to qualifying R&D projects and traceable to QRE calculations on Form 6765.
Expert Representation
Work with R&D tax relief experts experienced in defending R&D tax credit audits and representing clients during IRS examination — not just those who prepared the original return.
Annual Credit Reviews
Conduct annual reviews of R&D activities and documentation practices to ensure your claim stays current, defensible, and maximized as your business evolves.
Engineered Tax Services | ETS has extensive experience helping clients prepare for R&D tax credit audits and successfully defending claims under IRS examination. Our team's expertise in both the technical and financial dimensions of the credit means your claim is built to withstand scrutiny from day one.
R&D Tax Credit Audits: How to Prepare
Federal R&D tax credits are just the starting point. Many states offer their own credits that can significantly increase total benefit. Engineered Tax Services | ETS helps clients stack federal and state benefits across key markets:
FL
Florida
Florida offers the R&D Tax Credit under the Florida corporate income tax, providing qualified businesses with a credit equal to 10% of qualifying expenditures. Combined with federal credits, Florida-based manufacturers, aerospace, and tech companies can achieve substantial combined savings.
CA
California
California's R&D credit (FTB Form 3523) provides a 15% credit on QREs over a base amount, and 24% for university research. California has no cap on the credit, and unused credits can be carried forward indefinitely — making it one of the most valuable state programs in the country.
NC
North Carolina
North Carolina offers an R&D credit (Form NC-478G) of up to 35% for small businesses. The credit applies against individual and corporate income tax, making it especially powerful for pass-through entities including S-corps and partnerships with R&D activities in NC.
TX
TEXAS
Texas provides an R&D sales and use tax exemption and a franchise tax credit for qualifying research. With no state income tax, Texas businesses benefit primarily through franchise tax reduction and exemptions on R&D supplies and equipment — combining favorably with the federal R&D credit.
Why Work With Engineered Tax Services?
Engineered Tax Services | ETS is a national leader in strategic tax planning, cost segregation studies, and R&D tax credit claims. We serve businesses, real estate investors, and high-income individuals across the United States, with deep expertise in Florida, California, North Carolina, Texas, and all major U.S. markets.
Our R&D tax relief experts, engineers, and tax professionals take a comprehensive approach to every engagement — ensuring that R&D tax credit claims are maximized, properly documented, and defensible in any audit. We integrate R&D tax planning with cost segregation studies, energy tax incentives, and opportunity zone strategies to create layered, long-term tax savings for clients who expect more than a single-point solution.
Our R&D Tax Credit Services Include:
- Eligibility assessments and feasibility analyses — no fee if you don't qualify
- Qualified Research Expense (QRE) identification and calculation
- RRC and ASC method analysis and election optimization
- Form 6765 preparation and state credit filing
- Lookback studies for prior open tax years (typically 3 years)
- R&D tax credit audit support and IRS examination defense
- Integration with cost segregation studies for real estate investors
- Annual R&D credit monitoring and documentation programs
R&D Tax Credit FAQ
What expenses can qualify for R&D credit?
The four categories of Qualified Research Expenses (QREs) are: (1) employee wages for those who perform, supervise, or support qualified research; (2) tangible supplies consumed in the research process; (3) 65% of payments to third-party contract researchers when you retain rights and bear the financial risk; and (4) cloud computing or computer rental costs used in qualified research. The key is that each expense must be directly tied to an activity that passes the IRS four-part test.
Are there R&D credit limits I should know about?
Yes. Several R&D tax credit limitations apply. The credit is part of the General Business Credit and is subject to annual limitations that prevent it from reducing tax below the tentative minimum tax in most circumstances. Under IRC Section 280C, the credit also reduces deductible research expenses unless a reduced-credit election is made. Carryforwards of up to 20 years and carrybacks of 1 year are available for unused credits. Startup companies can use up to $500,000 per year against payroll taxes, and businesses under $50 million in gross receipts can use the credit to offset AMT.
How does the R&D tax credit work for small businesses?
Small businesses enjoy expanded R&D credit benefits. Companies with average annual gross receipts of $50 million or less can use the credit to offset Alternative Minimum Tax. Qualified small businesses — those with fewer than five years of gross receipts and less than $5 million in current-year revenue — can elect to apply up to $500,000 of R&D credits against their employer portion of payroll taxes (FICA), making the credit valuable even before the company is profitable. This payroll tax offset is claimed on Form 8974.
How far back can I claim R&D tax credits?
While virtually any industry can qualify, the most common include aerospace, manufacturing, architecture and engineering, construction, software development, gaming and cloud computing, blockchain and cryptocurrency, robotics and automation, financial services and fintech, medical research and healthcare, solar and renewable energy, and hospitality (technology-driven). Small businesses across every sector also frequently qualify. The key factor is not the industry — it's whether specific activities meet the four-part IRS test for qualified research.
What should I do to prepare for an R&D tax credit audit?
Small businesses enjoy expanded R&D credit benefits. Companies with average annual gross receipts of $50 million or less can use the credit to offset Alternative Minimum Tax. Qualified small businesses — those with fewer than five years of gross receipts and less than $5 million in current-year revenue — can elect to apply up to $500,000 of R&D credits against their employer portion of payroll taxes (FICA), making the credit valuable even before the company is profitable. This payroll tax offset is claimed on Form 8974.
What should I do to prepare for an R&D tax credit audit?
The most important step to prepare for an R&D tax credit audit is building strong contemporaneous documentation at the time of the R&D activity — not after an audit notice arrives. This includes project-level technical narratives, employee time studies, payroll data tied to qualifying projects, supply invoices, contractor agreements, and management approvals. Conducting technical personnel interviews before filing captures critical institutional knowledge. Working with experienced R&D tax relief experts who can represent you during IRS examination is also strongly recommended.
Can real estate investors claim the R&D tax credit?
Yes, in certain circumstances. Real estate developers who engage in developing new building techniques, energy-efficient construction methods, or proprietary property management or analytics software platforms may qualify for R&D credits. When combined with a cost segregation study — which accelerates depreciation deductions on qualifying building components — real estate investors can layer multiple tax incentives for significantly greater overall benefit.
Get a Free R&D Credit Assessment
Our R&D tax relief experts will evaluate your qualifying activities, estimate your potential credit, and guide you through the entire claims process — at no upfront cost.
Ready to Claim Your R&D Tax Credits?
If your business is investing in innovation — whether in aerospace, manufacturing, software, renewable energy, medical research, or any other qualifying field — you may be leaving significant money on the table. Our R&D tax relief experts are ready to help businesses throughout Florida, California, North Carolina, Texas, and across the United States maximize every dollar they've earned. Contact us to find out more about expenses that qualify for R&D credits or to request a consultation.
