UK Patent Box Scheme Explained: Tax Relief, Benefits & Eligibility

Innovative businesses often rely on R&D Tax Credits to support the cost of developing new technologies. But once those innovations start generating profit, another valuable tax incentive becomes available: the UK Patent Box scheme.

The Patent Box scheme allows UK companies to apply a reduced Corporation Tax rate of 10% on profits generated from patented inventions, helping businesses retain more of the financial return from their intellectual property (IP).

Understanding how Patent Box tax relief works, who qualifies, and how it interacts with R&D Tax Credits can help businesses maximise the value of their innovation.

If your business generates profits from patented technologies, you may also benefit from Patent Box relief.

Table of contents:

• What is the Patent Box scheme?
• How Patent Box Tax Relief works
• Who is eligible for the Patent Box scheme?
• Patent Box vs R&D Tax Credits
• How Patent Box and R&D Tax Credits work together
• Examples of Patent Box tax savings
• Common mistakes when claiming Patent Box relief
• Patent Box scheme FAQs

What is the Patent Box scheme?

The UK Patent Box scheme is a government tax incentive that allows companies to pay a reduced rate of Corporation Tax on profits generated from patented inventions. It is designed to reward businesses that invest in innovation and successfully commercialise their intellectual property.

Introduced to encourage companies to develop and retain high-value innovation in the UK, the Patent Box allows qualifying profits from patented products, processes, or technologies to be taxed at an effective rate of 10%, regardless of the standard Corporation Tax rates that may apply to the rest of the company’s profits.

For UK businesses that have already taken innovative products or technologies to market, the Patent Box tax relief can significantly reduce the tax paid on those profits. This makes it particularly valuable for companies that invest heavily in research and development (R&D) and have secured patents to protect their innovations.

How Patent Box Tax Relief works

Once a company begins generating income from patented technology, the Patent Box scheme allows qualifying profits to be taxed at a reduced Corporation Tax rate of 10%.

To claim the relief, businesses must determine how much of their revenue is directly linked to patented inventions.

HMRC requires businesses to identify the profits attributable to their patented innovations to determine how much relief a company can claim. This usually involves analysing product revenue, licensing income, and the contribution of patented technology to overall profits.

While the rules behind the calculation can be complex, the core principle is simple: profits generated from patented inventions may qualify for a significantly lower tax rate under the Patent Box scheme.

Reduced Corporation Tax rate

Under the UK Patent Box scheme, qualifying profits can be taxed at 10% instead of the standard Corporation Tax rate, which can be as high as 25% depending on the company’s profits.

For innovative businesses generating significant revenue from patented products or technologies, this difference can lead to substantial tax savings over time. The scheme is designed to reward companies that successfully commercialise innovation and retain valuable intellectual property within the UK.

Profits that qualify

Patent Box relief can apply to profits generated from several sources linked to patented inventions, including:

• Sales of patented products
• Products that incorporate patented components or technology
• Licensing income from patented technology
• Income from the sale of patent rights
• Compensation received for patent infringement

In many cases, even if a patent relates to just one component of a larger product, a portion of the profits from that product may still qualify for Patent Box relief.

Calculating Patent Box relief

Calculating the amount of profit that qualifies for Patent Box tax relief involves identifying the relevant intellectual property income (RIPI) and determining how much of that income is attributable to the patented invention.

HMRC requires companies to apply a formula that considers factors such as:

• Revenue from patented products or licences
• Routine profits unrelated to the patent
• The proportion of R&D activity undertaken by the company

Because these calculations can be complex, many businesses work with specialists to ensure their Patent Box claims are structured correctly and that all eligible profits are included.

Who is eligible for the Patent Box scheme?

While not every business will qualify for Patent Box tax relief, many innovative companies are eligible once they hold a qualifying patent and generate profits from the related technology.

A company may qualify if it:

• Owns a patent granted by the UK Intellectual Property Office, European Patent Office, or another recognised authority
• Holds an exclusive licence to use a patented invention
• Is liable for UK Corporation Tax
• Has undertaken development work related to the patented invention

Importantly, the company must also have played a role in developing or improving the patented technology. This ensures that the relief rewards businesses that actively contribute to innovation.

Patent Box vs R&D Tax Credits

Although both incentives support innovation, R&D Tax Credits and the Patent Box scheme apply at different stages of the innovation lifecycle.

R&D Tax Credits	Patent Box
Tax Relief on R&D costs	Reduced tax on profits
Applies during development	Applies after commercialisation
Based on qualifying expenditure	Based on profits from patented innovations

R&D Tax Credits typically support businesses while they are developing new technologies or solving technical challenges. Patent Box relief, on the other hand, rewards companies once those innovations have been successfully commercialised and begin generating profit.

For many innovative businesses, the two incentives can form part of a long-term innovation funding strategy.

How Patent Box and R&D Tax Credits work together

Yes, many innovative companies benefit from both incentives at different stages of their innovation journey.

During the development phase, businesses may claim R&D Tax Credits to recover a portion of the costs involved in developing new technologies or products, provided they meet R&D eligibility criteria.

Once those innovations are patented and begin generating revenue, the Patent Box scheme can then reduce the Corporation Tax paid on profits linked to them.

Used together, both the R&D Tax Credits and Patent Box incentives can support companies from early-stage research through to commercial success, helping maximise the financial return on their innovation.

With recent changes to the R&D Tax Credit schemes, it’s increasingly important to understand how different incentives interact.

Examples of Patent Box tax savings

To understand the potential value of the Patent Box scheme, consider a business generating £1m in profits from a patented product.

Under the standard Corporation Tax rate of 25%, the company would pay £250k in tax. If those profits qualify for Patent Box relief and are taxed at an effective rate of 10%, the tax payable would be £100k.

This could result in a tax saving of £150k, which can be reinvested into further research, development, and business growth.

For smaller companies paying Corporation Tax at 19%, the saving is still significant. On £1m of qualifying profits, tax would normally be £190k, compared to £100k under Patent Box, resulting in a saving of £90k.

These figures are based on current Corporation Tax rates as of 2026.

Common mistakes when claiming Patent Box relief

While the Patent Box scheme can offer significant tax savings, it’s easy to miss out on relief if the rules aren’t fully understood.

Some of the most common issues we see include:

• Missed election deadline – Missing the deadline to elect into the Patent Box regime, which can limit how much relief can be claimed
• Underestimated qualifying profits – Underestimating how much profit qualifies, particularly where patented technology is just one part of a wider product
• Qualifying income confusion – Confusion around what counts as qualifying income, especially for licensing or complex revenue streams
• Poor R&D alignment – Not aligning Patent Box with existing R&D Tax Credit claims, which can lead to missed opportunities or inefficient claims

Since the calculations and rules can be complex, many businesses either underclaim or avoid claiming altogether. Getting the structure right from the start can make a significant difference to the level of relief available.

Patent Box scheme FAQs

What counts as a patented invention for Patent Box?

The UK government classifies a patented invention as a product, process, or technology that has been granted a patent by an approved authority, such as the UK Intellectual Property Office or the European Patent Office. Profits generated from products that incorporate the patented technology may qualify for Patent Box relief.

Is Patent Box always taxed at 10%?

The Patent Box scheme applies an effective 10% Corporation Tax rate to qualifying profits from patented inventions, regardless of whether the company pays 19% or 25% Corporation Tax on other profits.

This means that even if your business falls within different Corporation Tax bands, qualifying Patent Box profits are still taxed at the reduced 10% rate.

Do you need to own the patent to claim Patent Box?

Not necessarily. Companies may also qualify if they hold an exclusive licence to use a patented invention, provided they have undertaken development work related to the patent.

What types of profits qualify for Patent Box relief?

Profits from selling patented products, licensing patented technology, or selling products that incorporate patented components may qualify for Patent Box relief.

When can a company start claiming Patent Box?

Businesses can generally claim Patent Box relief once the patent has been granted and the company begins generating profits from the patented invention. In some cases, profits earned while the patent application was pending may also be included.

Which industries benefit most from Patent Box?

Patent Box relief is commonly used by businesses in sectors such as:

• Manufacturing
• Engineering
• Life sciences
• Pharmaceuticals
• Software
• Technology sectors

However, any company developing patented innovations may be eligible.

Need help claiming Patent Box relief?

Calculating qualifying profits and submitting a Patent Box claim can be complex. If your business holds patents, our specialists can help assess eligibility and maximise your tax savings.

Get in touch or visit our Patent Box relief page to learn more about how we can support your claim.

Chloe Twist