Manufacturing R&D Tax Relief
for UK Manufacturers
Professional R&D tax relief claims for manufacturing companies. Supporting automation and process improvements, product development, and Industry 4.0 technologies.
Qualifying Manufacturing R&D Activities
Manufacturing companies can claim R&D tax relief for a wide range of challenging activities that advance technology through the attempt to resolve technical uncertainties.
Developing new manufacturing processes, automation systems, and production line improvements.
Examples:
- Automated assembly systems
- Smart factory technologies
- Process advancement
- Lean manufacturing innovation
Creating new products, improving existing designs, and developing challenging manufacturing solutions.
Examples:
- New product prototyping
- Material challenges
- Design for manufacture
- Performance improvements
Advanced quality assurance systems, testing methodologies, and inspection technologies.
Examples:
- AI-powered quality control
- Non-destructive testing
- Statistical process control
- Automated inspection systems
IoT integration, data analytics, digital twins, and smart manufacturing technologies.
Examples:
- IoT sensor networks
- Predictive maintenance
- Digital twin modelling
- Real-time production monitoring
Common Manufacturing R&D Projects We See
These are some of the manufacturing projects we regularly help businesses claim for. If your work involves resolving technical challenges like these, you may be eligible for R&D tax relief.
Production line automation
Designing and integrating automated systems to advance throughput, consistency, and reliability across the production line.
CNC machining improvements
Developing new tool paths, fixturing, and machining strategies to achieve tighter tolerances and reduce scrap.
Tooling development
Creating and refining custom tooling, jigs, and dies where the right approach is not readily known at the outset.
Welding process development
Trialling new welding techniques, parameters, and materials to improve joint strength and repeatability.
Robotics integration
Introducing robotic cells and cobots into existing workflows and resolving the technical challenges of doing so.
Composite materials
Developing advanced composite formulations, layups, and curing methods for lighter, stronger components.
Packaging innovation
Engineering new packaging formats and sustainable materials that protect products and cut waste.
Food manufacturing process development
Advancing recipes, shelf life, and production methods while meeting strict safety and hygiene requirements.
Energy efficiency improvements
Reducing energy use in production through process redesign, heat recovery, and new control systems.
Manufacturers developing patented products may also benefit from Patent Box tax relief. If your projects span multiple engineering disciplines, our engineering R&D tax relief service covers this work in detail.
Manufacturing Sectors We Support
We work with manufacturers across all sectors, understanding the unique R&D challenges and opportunities in each industry.
- Electric vehicle development
- Autonomous systems
- Lightweight materials
- Production efficiency
- Advanced material development
- Tooling and moulding innovation
- Process automation and control
- Lightweighting and structural testing
- Advanced materials
- Precision manufacturing
- Testing protocols
- Component innovation
- Miniaturisation projects
- Circuit innovation
- Assembly automation
- Performance testing
- Process development
- Quality systems
- Contamination control
- Scale-up projects
- Smart fabrics
- Sustainable materials
- Production innovation
- Performance textiles
Manufacturing R&D in Practice
A real-world example of how Lexmore translates technical uncertainty into a robust, HMRC-aligned R&D tax relief claim.
Peat-free compost formulation engineered for stable pH and nutrient performance at commercial scale.
The baseline
A growing media manufacturer undertook a project to develop a commercially viable peat-free compost formulation capable of maintaining stable pH and nutrient performance whilst complying with upcoming industry-wide peat reduction requirements. Existing peat-based composts benefited from predictable pH behaviour, nutrient retention and water management characteristics, whereas the alternative substrates available to the industry exhibited highly variable and often conflicting chemical properties.
The goal
The company sought to achieve an appreciable improvement in peat-free media manufacturing by developing a repeatable formulation methodology using alternative substrates including spent coir, composted green waste, bark fines, wood fibre and hydra fibre.
Technological uncertainties
Whether a peat-free blend could consistently achieve the target pH and conductivity ranges required for healthy plant growth across varying substrate batches.
How different substrate combinations would interact chemically when blended at commercial scale.
Whether nitrogen drawdown and nutrient leaching from wood-based substrates could be controlled without negatively impacting conductivity or plant performance.
Activities undertaken
- Systematic formulation trials using varying substrate ratios
- pH and conductivity testing throughout production
- Nutrient retention and fertiliser leaching analysis
Why Manufacturers Choose Lexmore
Our work goes well beyond filing a claim. We combine deep technical understanding with a rigorous, compliance-first process that protects you and stands up to HMRC scrutiny. Read more about our approach to R&D compliance, and if you work with an accountant, see how we collaborate through our accountancy partnership.
Compliance-first methodology
Every claim is built to withstand scrutiny, with robust evidence and a clear technical rationale at its core.
Additional Information Form preparation
We prepare and submit HMRC's mandatory Additional Information Form so your claim meets current filing requirements.
Technical interviews with engineers
We speak directly with your engineers to capture the genuine technical uncertainties behind each project.
HMRC enquiry support
If HMRC opens an enquiry, we stand behind our work and manage the response on your behalf.
Site visits
Where it helps, we visit your facility to see the work first-hand and strengthen the claim evidence.
Dual compliance review
Each claim passes through two independent reviews before submission to confirm accuracy and compliance.
Manufacturing R&D Tax Relief in Numbers
Manufacturing is one of the most active sectors for R&D tax relief in the UK, according to HMRC's published statistics.
Manufacturing was the UK's joint most active sector for R&D tax relief claims in 2023–24.
of UK R&D tax relief was claimed by manufacturing businesses.
of all UK R&D claims came from just three sectors, with manufacturing firmly among the UK's leading innovators.
- Staff costs, including gross salaries, employer NICs, and pension contributions for people engaged in R&D.
- Subcontractor and externally provided worker costs for qualifying project work.
- Consumable materials used or transformed during R&D, including prototypes and test pieces.
- Software, and certain cloud and data costs, used directly in the R&D process.
- Utilities such as power, water, and fuel consumed during qualifying activities.
- Treating routine production changes or cosmetic tweaks as R&D where there is no genuine technical uncertainty.
- Weak or missing records that link costs to specific projects and time periods.
- Over-claiming staff time without apportioning it to qualifying R&D activity.
- Including commercial or aesthetic work that does not seek a genuine technological advance.
- Technical narratives that describe what was built but not the advance sought or the uncertainty resolved.
- Vague narratives that restate commercial goals rather than the technical uncertainties involved.
- Round-number or unusually large cost figures with little supporting detail.
- A missing or late Additional Information Form, which has been mandatory since August 2023.
- Sudden, large increases in claim value from one year to the next.
- Subcontractor and externally provided worker costs that are not properly evidenced.
Source: HMRC Research and Development Tax Credits Statistics, September 2025 release (tax year 2023 to 2024). Sector shares are HMRC aggregate statistics and may change in later releases.
Manufacturing R&D Tax Relief Benefits
20% R&D Expenditure Credit
Most manufacturers can claim a 20% R&D expenditure credit on qualifying R&D costs under the UK's merged RDEC scheme.
Cash Benefit Available
The credit can reduce your Corporation Tax liability or, in many cases, be received as a cash payment from HMRC.
Manufacturing Expertise
Production improvements, automation projects, material development, process refinement and Industry 4.0 technologies can qualify.
Comprehensive Cost Coverage
Staff costs, subcontractors, consumables, software, utilities and certain cloud and data costs may all qualify.
R&D Tax Relief Calculator
Fill in the boxes, your estimate updates as you type.
For financial periods starting on or after 1 April 2024
Tell us about your business
Total spend on qualifying R&D activities (staff, subcontractors, consumables, software, utilities).
Industry 4.0 & Smart Manufacturing
The digital transformation of manufacturing presents significant R&D opportunities. From IoT sensors and AI-powered analytics to robotics and digital twins, these technical developments often qualify for substantial tax relief.
- IoT and sensor network development
- Predictive maintenance systems
- AI-powered quality control
- Digital twin technologies
Manufacturing R&D Key Facts
Essential information about R&D Tax Relief for manufacturing companies
Process Innovation Qualifies
Manufacturing process improvements, automation systems, and production line enhancements qualify when they involve technological advancement.
Industry 4.0 Projects
IoT integration, digital twins, predictive maintenance, and smart manufacturing technologies are eligible for R&D tax relief.
Quality Control Systems
AI-powered quality control, automated inspection systems, and advanced testing methodologies qualify for relief.
Multiple Manufacturing Sectors
Automotive, aerospace, electronics, pharmaceutical, textiles, and composite manufacturing all qualify for R&D tax relief.
Material Development Counts
Advanced material testing, lightweight composites, and sustainable material development projects are eligible activities.
Comprehensive Cost Coverage
Staff costs, materials consumed in R&D, subcontractor fees, and utilities directly attributable to qualifying projects are included.
Manufacturing R&D Tax Relief FAQs
Common questions from manufacturers about claiming R&D tax relief.
Still have questions? We're here to help.
Ready to Claim Your Manufacturing R&D Tax Relief?
Let's work together. Call or message us today. No commitment, no pressure and no obligations. Just an honest, expert conversation regarding your eligibility for us to show you how Lexmore can make a difference for you.