7 Mins
Written by: Beth Anderson
Manager, Corporate Tax
Last reviewed: 4 November 2026Manufacturers are often surprised to learn that R&D tax relief isn’t limited to laboratories or groundbreaking inventions. Many qualifying activities take place on the factory floor, in engineering departments or during efforts to improve products and production processes.
Whether you’re developing a new product, introducing automation, improving efficiency or solving a production challenge, some of that work could potentially qualify for R&D tax relief.
Understanding where qualifying R&D exists can help manufacturers identify valuable tax opportunities while ensuring claims are supported by appropriate evidence and meet HMRC’s requirements. R&D tax relief should also be considered as part of a wider corporate tax planning strategy, helping businesses maximise available reliefs while remaining compliant.
Key Takeaways
- Manufacturing R&D is not limited to new inventions or products.
- Process improvements can qualify where technical uncertainty exists.
- Automation and engineering projects may qualify if bespoke solutions are required.
- Materials development and testing often create qualifying activity.
- Failed projects can still qualify if genuine technological challenges were present.
- Good record-keeping is essential to support a robust claim.
- Recent HMRC compliance requirements mean businesses should consider claim eligibility early in the process.
What Manufacturing Activities Qualify for R&D Tax Relief?
A project may qualify for R&D tax relief if it aims to achieve an advance in science or technology and involves Manufacturing activities may qualify for R&D tax relief where a business is seeking a technological or engineering advance and must overcome technical uncertainty to achieve it.
Common examples include:
- Developing new products or components
- Improving manufacturing processes
- Increasing production efficiency
- Designing bespoke engineering solutions
- Automation and robotics projects
- Materials testing and development
- Improving product performance or durability
- Scaling up production methods
The key test is not whether a project generates additional revenue or reaches the market successfully. Instead, HMRC focuses on whether the business faced genuine technological challenges that could not easily be resolved by a competent professional in the field.
Product Development and Process Innovation
One of the biggest misconceptions about R&D tax relief is that it only applies to entirely new products.
In practice, manufacturing R&D often arises when businesses attempt to improve existing products or processes.
For example, a manufacturer may be trying to:
- Reduce product weight without affecting strength
- Improve product durability
- Increase production speeds
- Reduce waste during manufacturing
- Meet demanding customer specifications
- Improve sustainability performance
Where these objectives require technical experimentation, testing and problem-solving, some of the associated work may qualify.
Automation and Engineering Challenges
Investment in automation has become increasingly common across manufacturing businesses, but not every automation project qualifies for R&D tax relief.
Simply installing off-the-shelf equipment would not normally be considered R&D. However, qualifying activity may arise where businesses need to develop bespoke solutions or overcome technical limitations.
Examples might include:
- Integrating robotics with existing production lines
- Developing custom control systems
- Solving software and hardware compatibility issues
- Creating new automated manufacturing techniques
- Improving machine performance beyond available capabilities
The technical uncertainty involved in achieving the desired outcome is often what creates eligibility.
Materials Development and Testing
Manufacturers frequently undertake extensive testing when developing products or improving production methods.
Projects may involve:
- Trialling alternative materials
- Improving heat, chemical or corrosion resistance
- Enhancing performance characteristics
- Developing specialist coatings or finishes
- Reducing environmental impact
Where testing is carried out to resolve technological uncertainty rather than simply validate known outcomes, the activity may form part of an R&D claim.
A Practical Example
A manufacturer is experiencing significant production bottlenecks that limit output.
The engineering team develops a new manufacturing process to boost throughput without compromising quality standards. Existing solutions do not achieve the required results, leading to months of testing, redesign and refinement before a workable process is established.
Although the commercial objective is increased productivity, the project involves overcoming genuine technological uncertainty relating to production methods. In these circumstances, some of the development work may qualify for R&D tax relief.
Building a Strong R&D Claim
Many manufacturers miss qualifying R&D because they view technical problem-solving as part of normal operations rather than innovation.
Maintaining good records throughout a project can help support a claim and demonstrate the technical challenges involved.
Useful documentation may include:
- Design drawings
- Engineering specifications
- Prototype records
- Testing results
- Technical meeting notes
- Project timelines
- Staff time records
Businesses should also be aware of recent compliance requirements. Depending on their circumstances, some companies may need to notify HMRC before making a claim. Our guide on claiming R&D tax relief and when you may need to notify HMRC first explains when this requirement may apply.
Conclusion
Many manufacturers undertake qualifying R&D without recognising it as such. Projects focused on improving products, increasing efficiency, developing new processes or overcoming engineering challenges may all create opportunities for R&D tax relief.
By understanding what HMRC looks for and maintaining appropriate records, businesses can identify qualifying activities with greater confidence while ensuring claims are properly supported and compliant.
FAQs
Yes. Process improvements can qualify where a business is attempting to overcome technological uncertainty rather than simply implementing established methods.
Potentially. Projects involving bespoke automation solutions, robotics integration or complex engineering challenges may qualify.
Yes. A project does not need to succeed. The key factor is whether technological uncertainty existed and work was undertaken to resolve it.
Often, yes. Designing, building and testing prototypes can form part of qualifying R&D where they are used to overcome technical challenges.
Useful evidence includes testing documentation, design drawings, specifications, project plans, technical reports and staff time records.
