The federal research and development (R&D) tax credit — formally called the Credit for Increasing Research Activities — is a tax benefit associated with qualified research activities undertaken by a business. In general terms, it is designed to recognize qualifying research investments a company makes to develop or improve products, processes, software, techniques, formulas, or similar business components. Whether a particular activity qualifies, and how any resulting credit is computed, depends on the specific facts and on the rules set out in the Internal Revenue Code and IRS guidance.
What the R&D Tax Credit Is
The credit for increasing research activities is established under Section 41 of the Internal Revenue Code. Rather than a single automatic benefit for any research-looking spending, it is a credit that may be associated with qualified research activities and qualified research expenses (QREs) that meet the requirements in the statute and its guidance. The IRS reports and administers the credit through Form 6765, Credit for Increasing Research Activities.
It is commonly discussed in terms of two computation approaches: a "regular" credit and an alternative simplified credit (ASC). Each has its own mechanics and history, and which is more appropriate depends on a taxpayer's facts. The credit is not a universal percentage that applies automatically to a company's research budget; qualification turns on the nature of the activities, the costs, and the supporting documentation.
Separately from the credit itself, the rules for how research and experimental expenditures are treated for tax purposes are addressed under Section 174 (and, following recent legislation, Section 174A). These deduction and amortization rules interact with, but are distinct from, the credit.
What Types of Work May Be Relevant
The analysis commonly considers activities involving the development or improvement of a business component — for example, a product, a manufacturing or production process, software, a technique, a formula, or an invention — where the statutory and regulatory requirements are met. The work typically involves resolving a technical question through evaluation and testing rather than carrying out routine production or ordinary business improvement.
A company experimenting with a new material to meet a performance target, evaluating alternative software architectures to resolve a technical uncertainty, or testing process changes to improve yield might be engaged in the kind of activity the credit is associated with — but only if the specific requirements are satisfied. Ordinary efficiency improvements, routine data collection, or work that simply follows established steps generally are not, by themselves, qualifying activity. Whether particular work rises to the level of qualified research is a facts-and-circumstances determination that often benefits from professional review.
The Four-Part Test
Under Section 41(d), qualified research must generally satisfy four requirements — commonly referred to as the "four-part test." The IRS Instructions for Form 6765 describe these requirements, which apply with respect to the relevant business component:
- Permitted purpose — the activity is intended to develop or improve a business component (such as a product, process, software, technique, formula, or invention).
- Technological in nature — the process of inquiry relies on principles of the physical or biological sciences, engineering, or computer science.
- Elimination of uncertainty — the activity is intended to eliminate uncertainty about the capability or method for developing or improving the business component, or the appropriateness of its design.
- Process of experimentation — substantially all of the activities constitute elements of a process of experimentation, such as evaluating alternatives or testing hypotheses.
This is a high-level introduction; the four-part test involves detailed rules and exceptions that are covered separately. For a deeper treatment, see our page on the four-part test.
What Costs May Be Considered
Qualified research expenses are the cost categories that may be taken into account in computing the credit. At a high level, these commonly include:
- certain wages of employees who perform or directly support qualified research;
- the cost of supplies consumed in the research; and
- amounts paid for certain contract research conducted on behalf of the taxpayer.
Current Form 6765 and its instructions also address how these expenses are reported, including business-component-level detail. Not every cost in a category automatically qualifies — for example, costs must be tied to qualified research activities and meet the applicable rules. For more, see our page on qualified research expenses.
Activities That May Require Exclusion or Special Review
Section 41 and the Form 6765 instructions identify categories of activities that are excluded from qualified research or that require special review. Examples include:
- research conducted after commercial production begins;
- adaptation of an existing product or process to a particular customer's needs;
- duplication of an existing business component;
- surveys, studies, or routine data collection;
- certain internal-use software development (subject to specific exceptions);
- research conducted outside the United States and its territories;
- research in the social sciences, arts, or humanities; and
- funded research, where the taxpayer is not bearing the financial risk of failure.
These exclusions and limitations are an important reason that qualification is a facts-and-circumstances question rather than a simple determination based on industry or project type.
How the Credit Is Reported
The credit is figured and claimed on Form 6765, Credit for Increasing Research Activities. According to the IRS, Form 6765 is used to figure and claim the credit, to elect the reduced credit under Section 280C, and to elect and figure the qualified small business payroll tax credit. The form and its instructions also address the reporting of qualified research expenses and business-component information.
A qualified small business may, under certain conditions, elect to apply a portion of the credit against payroll tax rather than income tax — an option that can be relevant for newer or pre-profit companies. Whether the payroll tax election, the reduced credit election, or another treatment is appropriate depends on a taxpayer's specific situation, and filing decisions should be made with professional review. For more on the form, see our page on Form 6765.
Why Documentation Matters
Because qualification depends on the specific activities, costs, and facts involved, contemporaneous records are central to substantiating a credit claim. Documentation created during the period of the research — describing projects, the technical uncertainty being addressed, the experimentation process, the personnel involved, and the associated costs and evidence — tends to be far more useful than records reconstructed after the fact.
The IRS has published guidance on the information it expects in connection with research credit claims, and organized records help a business respond if questions arise. There is no single universal checklist that applies to every business, but maintaining structured project, personnel, cost, and evidence records throughout the year is widely regarded as sound practice. For more, see our page on R&D tax credit documentation.
Key Takeaway
The R&D tax credit can be a meaningful benefit for companies investing in qualifying research, but whether it applies — and how much, if anything, results — depends on the specific activities, the costs, the applicable exclusions, the elections involved, and the supporting facts and documentation. Because these determinations turn on individual circumstances, professional review is appropriate before claiming the credit.