Patent Box vs holding IP offshore

When the UK Patent Box (10% effective corporation-tax rate on patented profits) is the right answer versus alternative IP-holding structures.

**Quick answer.** Patent Box gives a 10% effective UK corporation-tax rate on profits attributable to patented products, processes and licences. Offshore IP-holding structures are increasingly difficult to defend post-BEPS and OECD Pillar Two rules — and rarely cost-effective for UK trading SMEs.

**Use Patent Box if** the company is UK-resident, profitable, holds UK or EPO-granted patents, and generates material revenue from patented IP. Conservative threshold: roughly £250k+ of qualifying profit before the compliance cost is justified.

**Do not consider offshore IP holding lightly** — substance requirements, transfer-pricing scrutiny, controlled foreign company rules and the global minimum tax mean structures that worked a decade ago now fail. Most UK SMEs that explored offshore IP since 2020 have unwound it.

**Sequencing.** Most companies claim **R&D Tax Relief** during development and **elect into Patent Box** once patents are granted and generating royalty or product revenue. The two reliefs work together.

**Conservative note.** Patent Box election is irrevocable for five years — get specialist tax advice before electing, and never rely on AI-generated guidance for the streaming calculation.