Patent Box tax relief for patented technology

Patent Box can reduce the net Corporation Tax rate applied to qualifying profits from patented technology to 10%. It can provide the logical next step for businesses that have invested in developing protected intellectual property and are now generating commercial returns from it.

10% Corporation Tax Applied to qualifying Patent Box profits where the conditions are met.
One patent may be enough A large patent portfolio is not required where the protected technology generates qualifying profit.
Early planning matters The election and supporting records should be considered before the patent is granted.

How the Patent Box scheme works

Patent Box is a UK Corporation Tax relief that allows eligible companies to apply a 10% rate to qualifying profits associated with patented inventions. The relief can continue across multiple accounting periods while the relevant conditions remain satisfied.

The calculation begins by identifying the income and profit connected to the qualifying patent, before excluding amounts that fall outside the scheme and applying the required adjustments. A patented element within a wider product can sometimes bring more of the product income into consideration, depending on the patent rights held and the evidence available.

Qualifying patent rights The scheme commonly applies to patents granted by the UK Intellectual Property Office or European Patent Office.
Relevant development activity The company, or in certain circumstances another group company, must have undertaken qualifying development in relation to the patented technology. Additional active ownership conditions can apply within groups.
Identifiable profit and evidence The records should connect the patent, the commercial income and the development work undertaken by the business.
Tax calculation being prepared using financial records and a calculator
The headline rate is 10% The qualifying profit still needs to be identified and calculated in line with the Patent Box rules.

When Patent Box may be relevant

Patent Box may be worth exploring where a company owns or exclusively licenses patented technology and earns income from products, licences, processes or services connected to that invention.

Person using a laptop with digital tax graphics

Profit connected to patented technology

Relevant income may arise from the sale of patented products, the licensing or sale of patent rights, patented processes, or services that use the protected invention. The link between the patent and the commercial return needs to be clear and supported by the company’s records.

Granted rights

UKIPO or EPO patents

A granted patent is normally required before a Patent Box claim can be made, although an earlier election may preserve profits arising while an application is pending.

Company involvement

Development and ownership conditions

The company must meet the relevant development requirements and, in some group situations, demonstrate that it has actively managed the patented intellectual property.

How Patent Box relates to R&D tax relief

The two reliefs can support different stages of the same commercial development. A company may claim R&D tax relief while carrying out qualifying work and later use Patent Box when the resulting patented technology begins generating qualifying profit.

R&D tax relief

Based on qualifying research and development activity and the expenditure incurred while seeking an advance in science or technology.

Patent Box

Based on qualifying profit generated from patented technology after the protected intellectual property begins producing commercial returns.

Patent Box does not replace R&D tax relief. Businesses with valuable protected technology may need to consider both as part of their longer-term tax position.

The R&D fraction and nexus rules

Patent Box is intended to reward companies that have undertaken the R&D behind their qualifying intellectual property. The R&D fraction links the Patent Box benefit to that development activity and determines how much of the relevant IP profit can benefit from the reduced rate.

The development history matters. R&D carried out by the company and R&D subcontracted to an unconnected party are treated differently from R&D outsourced to a connected company or expenditure incurred acquiring qualifying IP.

R&D fraction

How the calculation is structured

The calculation compares qualifying R&D expenditure with the wider expenditure connected to the qualifying IP.

Fraction = ((D + S1) × 1.3) ÷ (D + S1 + S2 + A)

The 30% uplift can increase qualifying expenditure within the numerator, but the final R&D fraction cannot exceed 1.

D Direct R&D expenditure
S1 Unconnected subcontracted R&D
S2 Connected subcontracted R&D
A Qualifying IP acquisition expenditure

R&D carried out by the company

Relevant R&D expenditure incurred directly by the company contributes to the qualifying expenditure used within the R&D fraction.

Outsourced R&D

R&D subcontracted to an unconnected party can contribute to qualifying expenditure. Connected-party subcontracted R&D is treated differently and can reduce the R&D fraction, restricting the proportion of relevant IP profit that can benefit from Patent Box.

Acquired intellectual property

Expenditure incurred acquiring qualifying IP rights, including certain qualifying licences, can form part of the R&D fraction calculation and may reduce the proportion of relevant IP profit eligible for the Patent Box rate.

Why this matters: two businesses generating similar profits from patented technology can have different Patent Box outcomes depending on how the underlying IP was developed, whether R&D was outsourced within a group and whether qualifying IP was acquired.

Consider the opportunity before the patent is granted

A company cannot normally claim Patent Box while an application remains pending. However, the timing of the Patent Box election can affect the profits that may later be brought into the scheme once the patent is granted.

Early planning also gives the business time to establish suitable records, understand which income streams may be relevant and identify whether the development and ownership conditions are likely to be met.

Discuss a patent application with MSC R&D
Piggy bank and coins representing longer-term tax savings

How MSC R&D can help

Our experience in R&D tax relief gives us a strong understanding of the development work behind patented technology. We can help assess whether Patent Box is relevant, connect the protected invention to the company’s income and work through the position in line with HMRC guidance.

Assess the opportunity

We consider the patent rights, development history, ownership position and commercial use of the protected technology.

Identify relevant income

We help establish which products, licences, processes and services may generate qualifying patent-related income.

Review the evidence

We examine the records connecting the patented invention, the company’s development activity and the profit being claimed.

Prepare the position

We work through the required calculation and explain the basis of the Patent Box claim clearly to the business.

Common questions about Patent Box

The benefit and eligibility position depend on the company’s patent rights, development activity, income and group structure. These answers provide a useful starting point.

Ask MSC R&D about your position
What Corporation Tax rate applies under Patent Box?

Where the relevant conditions are met, qualifying profits associated with patented technology can be taxed at an effective Corporation Tax rate of 10%.

Which patents can qualify for Patent Box?

The scheme can apply to patents granted by the UK Intellectual Property Office or European Patent Office, as well as certain other qualifying intellectual property rights. The company must also meet the conditions relating to ownership, development activity and profit.

Can a company benefit while its patent application is pending?

A pending application does not create an immediate Patent Box claim. However, an election made at the appropriate time may allow qualifying profit arising from the election date to be included once the patent has been granted, subject to the scheme rules.

Does a company need a large patent portfolio?

No. One qualifying patent may be sufficient where the related technology generates meaningful profit and the company satisfies the relevant Patent Box conditions.

Can Patent Box and R&D tax relief both apply?

Yes. R&D tax relief relates to qualifying development activity and expenditure, while Patent Box relates to qualifying profit from patented technology. A company may therefore use both reliefs at different stages of the same wider commercial development.

What is the Patent Box R&D fraction?

The R&D fraction links the Patent Box benefit to the R&D expenditure underlying the qualifying intellectual property. It considers who carried out the R&D and whether qualifying IP was acquired, and can restrict the proportion of relevant IP profit that benefits from Patent Box.

Can outsourced R&D affect Patent Box?

Yes. The Patent Box rules distinguish between R&D subcontracted to connected and unconnected parties. Unconnected subcontracted R&D can contribute to qualifying expenditure, while connected-party subcontracted R&D can reduce the R&D fraction and therefore restrict the proportion of relevant IP profit benefiting from Patent Box.

Why should Patent Box be considered early?

Early consideration allows the business to make any necessary election, put suitable record keeping in place and understand what information will be required when the patent is granted and the protected technology begins generating qualifying profit.

Find out whether Patent Box could apply to your business

Whether your business already owns patented technology or has an application in progress, we can discuss the development work, income streams and records needed to assess the potential opportunity.