The UK Patent Box Regime
- Omar Aswat
- Jan 31, 2025
- 6 min read
Updated: Dec 23, 2025
Innovation drives success in industries like technology, pharmaceuticals, and engineering. If your business holds patents, the UK Patent Box regime provides a powerful way to reduce tax liabilities and reinvest in growth.
This scheme lets companies apply a 10% corporation tax rate to profits from patented inventions—far lower than the standard UK rate of 19-25%. In this post, we’ll explain how the Patent Box works, its eligibility criteria, and how your business can apply to benefit from this valuable tax relief.
Table of Contents
Key Benefits of the Patent Box Regime
Reduced Tax Rate: The Patent Box regime allows businesses to apply a 10% corporation tax rate to profits derived from qualifying patents, significantly lower than the standard UK corporation tax rate of 19-25%.
Eligibility: Businesses must own or exclusively license qualifying patents granted by the UK Intellectual Property Office (UKIPO) or the European Patent Office (EPO) and be actively exploiting those patents in their business activities.
R&D Contribution: To benefit from the Patent Box, companies must have contributed to or carried out the R&D activities leading to the patented invention.
Profits Linked to Patents: Only profits directly related to the patented invention, such as sales, licensing, or royalties, qualify for the reduced tax rate.
MAR and R&D Fraction: The Marketing Asset Return (MAR) must be excluded from the Patent Box calculation, and the R&D fraction determines how much of the profit is directly linked to R&D activities, ensuring only genuine innovation is taxed at the reduced rate.
Application Process: Businesses must gather and submit detailed information about their patents, R&D activities, and profits through HMRC’s online portal to apply for the relief.
What is the Patent Box?
The UK government introduced the Patent Box to encourage businesses to retain and commercialise intellectual property (IP) within the UK. By offering a reduced tax rate on IP-related profits, the scheme fosters continued investment in innovation.
For businesses with patents, the Patent Box presents a significant tax-saving opportunity, freeing up funds for further R&D and expansion.
Who Can Benefit from the Patent Box?
The scheme is particularly beneficial for businesses in:
Automotive and Aerospace
Technology and Software
Pharmaceuticals and Life Sciences
Manufacturing and Engineering
How Does the Patent Box Work?
Under the Patent Box regime, businesses can apply a 10% corporation tax rate to profits directly linked to their qualifying patents. These profits can include:
Sales revenue from products that incorporate patented technology.
Licensing and royalty income from granting others the right to use patented inventions.
Income from the commercialisation of the patent, such as royalties from products sold by others using the patented technology.
However, businesses must demonstrate that the profits are specifically linked to the exploitation of their patented inventions. Only those profits derived from the direct use, sale, or licensing of patented technology qualify for the reduced tax rate.
Not all businesses with patents will qualify for the Patent Box. To access the tax relief, businesses must meet the following criteria:
Ownership or Exclusive Licence of Patents: The company must either own or exclusively licence a qualifying patent. The patent must be granted by the UK Intellectual Property Office (UKIPO) or the European Patent Office (EPO). Patents held by the company must be actively exploited for business purposes.
Qualifying Intellectual Property (IP): The patent must relate to a qualifying invention, which means it must be a patent granted on a product or process that is commercially exploited. Additionally, the invention must be used in the company’s business activities.
Profits Linked to Patents: Only profits that are directly attributable to the patented invention qualify for the reduced tax rate. These can include income from the sale of products incorporating the patented technology, licensing agreements, and other commercialisation-related earnings.
R&D Contribution: Businesses must have carried out, or contributed to, the R&D activities that led to the creation or development of the patented invention. This can involve activities such as product design, testing, and experimentation.
Relevant Information Needed for the Calculation
To apply for the Patent Box relief, businesses need to gather and accurately calculate various pieces of information to support their claim. Here are the key components:
Patent Details:
The patent number(s) and their associated patent office.
Information regarding whether the company owns the patent(s) or holds an exclusive license.
Income from Patented Products:
Revenue generated from the sale of products that incorporate the patented technology.
Licensing or royalty income from granting others the right to use the patented technology.
R&D Expenditure
Direct R&D expenditure related to the development of the patented technology, including employee costs, materials, and any third-party R&D.
Subcontracted R&D costs, if applicable, should also be documented.
Ensure the documentation clearly outlines the contributions made by the business towards the development of the patent.
Relevant Profit Calculation:
Routine Return: The routine return is the portion of profits derived from activities that do not involve the patented technology but are essential for the company’s overall operations.
Marketing Asset Return (MAR): If applicable, the proportion of profits linked to branding or marketing assets associated with the product (i.e., not directly related to the patented invention).
R&D Fraction: This is used to determine the portion of the profits that are directly related to the patented technology. It is calculated using the ratio of R&D expenditure relative to total relevant expenditure (including any acquisition costs for patents).
How to Apply for the Patent Box
Assess Eligibility: Before applying, businesses should assess whether they meet the eligibility criteria for the Patent Box. This includes confirming that their patents are granted by the UKIPO or the EPO and that the income derived from these patents qualifies for the reduced tax rate.
Document R&D Contributions: To qualify for the relief, businesses need to maintain thorough documentation of their R&D activities. This includes records of any research, design work, testing, or development related to the patented invention, which will help demonstrate the company’s involvement in its creation.
Calculate Profits from Patents: Businesses must calculate the profits derived from their patented inventions. This involves determining the income generated from the sale of products incorporating the patented technology, royalties, and licensing income. The calculation must accurately reflect the proportion of profits linked to the patented invention.
Submit the Application to HMRC: Once the required information is collected, businesses can submit their application for the Patent Box via HMRC’s online portal. The application will ask for detailed information about the company’s patents, the R&D activities undertaken, and the profits linked to the patents. It’s essential that businesses provide accurate and comprehensive information to support their application.
Ongoing Compliance: After approval, businesses must ensure they remain compliant with the Patent Box regime. This means keeping detailed records of their patented inventions, R&D activities, and profits. As part of their annual corporation tax return, businesses will need to submit information on the ongoing use and commercialisation of their patents.
Common Pitfalls to Avoid
While the Patent Box offers significant benefits, there are several common mistakes businesses should avoid:
Failing to meet eligibility requirements: Businesses must ensure their patents are granted by the appropriate authorities (UKIPO or EPO) and that the profits are directly linked to the patented technology.
Incorrect profit calculations: Accurately calculating the proportion of profits derived from the patented invention can be complex. It’s essential to ensure the figures are accurate and compliant with HMRC guidelines.
Lack of adequate R&D documentation: Businesses should keep detailed records of their R&D activities, including testing, design, and development, to ensure they can demonstrate their contribution to the creation of the patented technology.
How ASWATAX Can Help
ASWATAX is here to help. As Chartered Tax Advisors, we specialise in helping businesses maximise their tax benefits through Patent Box relief and R&D tax credits.
Why Choose ASWATAX?
Expert Guidance: We handle the entire application process, ensuring compliance with HMRC. Maximise Your Tax Savings: Our team ensures you claim every eligible benefit. Time-Saving Support: Let us manage the process while you focus on innovation.
Take advantage of the Patent Box today! Book a free consultation with ASWATAX and discover how your business can reduce tax liabilities while fuelling future growth.
Contact ASWATAX now to get started!
Conclusion
The UK Patent Box regime offers a major tax-saving opportunity for businesses with qualifying patents. By reducing the corporation tax rate to 10%, companies can reinvest savings into further innovation and expansion.
To make the most of this opportunity, ensure your business meets the eligibility criteria, maintains proper documentation, and calculates profits correctly.
Consulting with ASWATAX can help you navigate this process smoothly, ensuring you fully benefit from the relief.
Don’t miss out on valuable tax savings! Get expert advice from ASWATAX today and start optimising your tax strategy.
📞 Contact ASWATAX for a free consultation.
Meet Omar Omar is a Chartered Tax Advisor (a.k.a an expert on tax issues) and founder of ASWATAX. He regularly shares his knowledge and best advice here in his blog and on other channels such as LinkedIn. Book a call today to learn more about what Omar and ASWATAX can do for you.
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