Direct comparison
Spin-out vs. Spin-off — CASRAI
Spin-out and spin-off overlap in usage. See how university TTOs, AUTM, and UK research funders actually distinguish (or don't distinguish) the two terms.
Side-by-side comparison
| Dimension | University spin-out | Corporate spin-off |
|---|---|---|
| Where the company originates | A university, research institute, hospital, or other public research organisation (PRO) | An existing operating company that separates one of its own business units, divisions, or subsidiaries |
| What is being transferred | IP (patents, know-how, software, materials) developed in the course of academic research, typically under an exclusive or non-exclusive license, or an assignment, from the institution's technology transfer office | An already-operating business line, its assets, staff, customer base, and often its existing revenue -- not newly disclosed research IP |
| Typical founders | Faculty, postdocs, or graduate researchers, often alongside an external CEO or founding team recruited by the TTO or an accelerator | Existing employees/executives of the parent company's business unit |
| Origin organisation's ongoing stake | Common for the university to hold founder equity (often single-digit to low double-digit percentages) and/or a running royalty under the license agreement, governed by Bayh-Dole (US) or institutional IP policy (UK/elsewhere) | The parent company may retain a minority stake initially, or distribute shares of the new entity pro-rata to its own existing shareholders (a stock spin-off), but there is no licensing relationship in the university sense |
| Governing framework (US) | University IP policy, Bayh-Dole Act disclosure/election requirements when federal funding was involved, institutional conflict-of-interest review of faculty founders | Corporate/securities law (e.g. IRS Section 355 tax-free spin-off treatment, SEC disclosure for public-company spin-offs) -- a different legal domain entirely |
| UK usage | "Spin-out" is the standard, consistently used term for a university-originated company -- UKRI's outcomes reporting (the Gateway to Research "Common Question Set") uses "Spin-outs" as a defined outcome category, now aligned to the UK Spinout Register's definition | "Spin-off" is used mainly for the corporate/business-divestiture sense; it is not the term UK funders use for university companies |
| US usage | Widely used, but not universal -- many US TTOs and AUTM's own Licensing Activity Survey terminology also use "startup" or "spinoff company" for the same university-originated entity | Used for both the corporate-divestiture sense and, less consistently than in the UK, sometimes for university-originated companies -- the US does not have one settled convention the way UK funders do |
| Does the distinction matter operationally? | Yes when it affects reporting categories (e.g. UKRI outcome data, a university's own KPI dashboard) or triggers a specific IP/COI review process tied to "spin-out formation" in institutional policy | Yes when it affects tax treatment or securities disclosure for a corporate divestiture -- a different compliance track than a university licensing/equity transaction |
Common questions
FAQ
Are "spin-out" and "spin-off" the same thing?+
Often treated as synonyms in casual use, but a common convention -- especially in UK research administration -- reserves "spin-out" for a company formed around university/research-institute IP, and "spin-off" for a company formed by an existing business separating out one of its own units. Usage is not fully standardized across institutions, so check the specific funder's or university's own glossary when it matters for reporting or policy purposes.
Which term does AUTM use?+
AUTM's Licensing Activity Survey and related materials use "startup" and "spinoff"/"spin-off" for university-originated companies, alongside "spin-out" in less formal usage -- AUTM does not enforce the strict university-vs-corporate distinction described above as a rule; its terminology overlaps with general industry usage.
Why do UK funders use "spin-out" specifically?+
UK research councils (UKRI) report "Spin-outs" as a defined outcome category in their Gateway to Research outcomes data, aligned to the UK Spinout Register's definition of a university-originated company. Because this is a formal reporting category tied to a specific funder taxonomy, "spin-out" is the operative term to use when completing UK outcomes/impact reporting, regardless of how loosely the term is used elsewhere.
Does a company have to be a spin-out to license university IP?+
No. A license to an existing, unrelated company (an established business licensing a university patent) is neither a spin-out nor a spin-off -- those terms specifically describe the formation of a NEW company around the transferred IP or business unit. An existing company simply licensing IP is a straightforward licensing transaction; see CASRAI's guide on patent licensing terms.
Is a corporate spin-off relevant to university tech transfer at all?+
Only indirectly. Corporate spin-offs (e.g. a large company divesting a division into an independent public company) are a distinct corporate-finance transaction, governed by tax and securities law rather than university IP policy. They are covered here mainly to clarify why the same word, used in a different context, does not describe a university-originated company.
