Patent Box
Open continuously
No deadline — apply whenever you are ready.
Reduced Corporation Tax rate of 10% on profits earned from patented inventions. Value depends entirely on the company's qualifying IP income and the R&D fraction; there is no cap.
HM Revenue & Customs
public · national
Deadline: rolling — Election must be made within 2 years after the end of the accounting period in which the relevant profits and income arose.
This funder does not publish a success rate. We rank it using the rate observed across similar programmes and label it as an estimate rather than implying we know.
Moderate — a form and supporting documents.
Who can apply
- Stage: seed, series_a, growth
- R&D activity required
- Locally registered entity required
Company must be liable to Corporation Tax and make a profit from exploiting patented inventions. Certain medicinal or botanic innovation rights also qualify. Benefits restricted by the R&D fraction where patents were acquired or R&D was paid to connected parties (for elections after 30 June 2016).
How to apply
- Confirm the company owns or exclusively licences-in qualifying patents (UK IPO, EPO or listed EEA offices) and has undertaken qualifying development.
- Separate relevant IP income from other income (streaming) and work through the Patent Box calculation steps. — link
- Elect into the Patent Box in the computations accompanying the Company Tax Return, or separately in writing.
What you will need
- Written election into the Patent Box (or election in the CT computations)
- Patent Box calculation showing relevant IP profits
Source. https://www.gov.uk/guidance/corporation-tax-the-patent-box — checked 2026-08-14
"Companies must elect into the Patent Box to apply the lower rate of Corporation Tax which is 10%."