Two Entities, One Taxpayer: How the R&D Credit Treats Related Companies

TL;DR

• Related companies under common ownership may be treated as one taxpayer for the R&D credit. The credit is computed for the whole group, then divided among its members.
• Payments between members are generally disregarded, so one entity paying a sister company for research does not create new credit.
• Know your group structure before you start. It affects how the claim is built, so mapping your entities early can save rework.

The question behind the structure chart

Many privately held businesses are not a single company. A founder may run an operating company, a separate entity that employs the staff, a holding company, and one or two others created for liability, financing, or historical reasons. When the topic turns to the R&D credit, the natural assumption is that each entity looks at its own research and claims its own credit.

The rules are different. The credit is a federal incentive under IRC Section 41, and Section 41(f) contains special rules for aggregating the expenditures of related businesses. This post explains that idea at a plain-English level. It is not a substitute for a review of your own structure.

The basic rule: one group, one credit

Under Section 41(f)(1), members of the same controlled group of corporations are treated as a single taxpayer, and the credit is allocated among them in proportion to each member’s share of the group’s combined qualifying expenses. A parallel rule applies to trades or businesses, such as partnerships and sole proprietorships, that are under common control. The detailed mechanics are in Treasury Regulation 1.41-6.

In practice, that means the credit is computed on an aggregate basis for the group, and the group generally uses one computation method, rather than each member picking its own. The resulting credit is then spread across members based on their shares of the group’s qualified research expenses. What counts as common control is determined by the regulations under Section 52, and it depends on ownership percentages and relationships, which is why a fact-specific review matters.

Why this matters for how you plan

Cost shifting does not create credit. The regulations generally disregard transactions between members of the group. If one entity pays a sister company for research work, that payment is treated within the group rather than as new outside spending. The rules also address leases and supply payments between members, with specific limits.

One entity’s research can matter to the whole group. Under the aggregation rules, a corporation in a controlled group is treated as carrying on a trade or business if any other member does. The analysis looks at the group as a whole, not only at the entity that happens to employ the engineers.

Allocation follows expenses. Each member’s share of the credit follows its share of the group’s qualified research expenses. Which entity bears the credit therefore depends on which entity bears the cost, which is worth knowing when you think about where the benefit lands on each return.

Acquisitions and dispositions change the picture. Section 41(f)(3) provides for adjustments when someone acquires the major portion of a trade or business or a separate unit of another company. If you have bought or sold a business recently, the history of that business may affect your computation. These adjustments can be technical, so expect to gather ownership and timing information.

Questions to answer before you start

You do not need to resolve these alone, but having rough answers speeds things up:

• Which entities do you and your co-owners own, and in what percentages?
• Which entity employs the people doing the technical work, and which entity sells the product or service?
• Do the entities pay each other for services, rent, or supplies?
• Have you acquired or sold any business or business unit in the past several years?
• Do the entities share a tax year, or do they differ?

How this fits the rest of your claim

The aggregation rules sit alongside the usual requirements. Your work still has to be qualified research, meaning technological in nature, aimed at a new or improved business component, and part of a process of experimentation, as laid out in Treasury Regulation 1.41-4. Aggregation changes how the credit is computed and allocated. It does not change what counts as qualified.

Strata offers more than one way to work together, including a more hands-on option for teams with multiple entities who would rather the engagement come to them. We can help you get the group picture straight early, and the end product is a documentation package your CPA can use with the return. Timelines vary, and a typical engagement runs four to eight weeks depending on how quickly information comes in.

Next step

If you own more than one company and are not sure how the credit applies, a 15-minute review is a low-effort way to find out. We will help you size the opportunity and answer your questions through our $0 initial assessment. Reach out at stratataxgroup.com/contact.

For background on how the credit is reported, the IRS publishes About Form 6765, Credit for Increasing Research Activities.

This post is for informational purposes only and does not constitute tax or legal advice. Consult a qualified tax professional regarding your specific circumstances.