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The R&D Tax Credit for Manufacturers: Who Qualifies and How It Works

Published September 30, 2026 7 min read By Phil Kim, content curator, Pagac & Company

The federal research and development credit under Internal Revenue Code Section 41 rewards qualified research activity: 20 percent of qualified research expenses over a computed base amount under the regular method, or 14 percent under the alternative simplified credit based on the prior three years. Eligibility is factual, documentation matters, and no claim is valid without meeting the statutory tests under applicable law.

What activities qualify as research?

The IRS describes qualifying research as activity undertaken to discover information that is technological in nature, intended for use in developing a new or improved business component, with substantially all of the activity constituting a process of experimentation. For manufacturers, that can include new product development, process improvements, tooling and mold development, prototype testing and production software.

Routine quality control, ordinary engineering and standard production work generally do not qualify on their own. The boundary is factual, which is why qualification is documented project by project.

How much is the credit and which expenses count?

The regular credit is 20 percent of qualified research expenses over the computed base amount, plus 20 percent of basic research payments. The alternative simplified credit is 14 percent of current-year qualified expenses over half of the prior three-year average. Qualified expenses include employee wages for qualified services, supplies used in research and 65 percent of contract research costs, rising to 75 percent for qualified consortium research.

Rent, overhead, general administration and foreign research generally do not qualify. Small businesses that are not yet profitable may also be able to claim part of the credit against payroll taxes under the qualified small business rules, a separate election with its own requirements.

How does a manufacturer claim it?

The credit is reported on Form 6765 with the tax return. A defensible claim identifies the projects, the people and supplies involved, and the base-period math, backed by contemporaneous records where possible.

A study performed after the fact can still substantiate a claim when the underlying records exist, which is why project-level time and expense tracking is worth building into the system even before the first claim.

What do manufacturers get wrong?

Assuming every engineer-hour qualifies, ignoring the experimentation requirement, or claiming undocumented activities. The loudest failures are the ones that could have been supported with better records.

The credit is a factual analysis, not an automatic benefit. Owners who review eligibility every year, and any open prior years with their advisor, get the value the law actually provides.

Key takeaways

  • The credit rewards qualified research activity under a documented statutory test.
  • Wages, supplies and most contract research count; rent and overhead generally do not.
  • Documentation is the difference between a claim and a successful claim.

Educational information only. This article is not personalized tax, legal or financial advice. Tax results depend on individual facts and applicable law, which can change. Discuss your situation with a qualified advisor.

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