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.
When can manufacturing work qualify?
The starting point is the scientific or technological advance being sought. It must be an advance in the overall knowledge or capability of the relevant field, not simply something new to the company.
The company must identify the scientific or technological uncertainties encountered and explain why their resolution was not readily available or deducible to a competent professional. Qualifying activities directly contribute to resolving those uncertainties, together with certain qualifying indirect activities.
A commercially unsuccessful or abandoned project can still contain qualifying R&D. Success is not the test. The purpose of the work, the state of knowledge when it began and the method used to address the uncertainty are what matter.
Projects that may contain qualifying R&D
These examples indicate where qualifying work can arise. They do not mean that every project of that type qualifies, or that every activity and cost within a qualifying project is eligible.
Production process development
Developing a manufacturing method to reach a yield, tolerance, consistency, cycle time or scale that the existing process could not achieve, where no established route would deliver it and the outcome had to be established through trials. Tuning, debottlenecking and optimising a known process is production improvement, however substantial the gain.
Materials development and application
Work on a formulation, composition, coating or material system where the required mechanical, thermal, chemical or shelf-life performance could not be predicted from existing knowledge and had to be resolved experimentally. Substituting an established material into an existing product, or qualifying a supplier's material to a specification, is not R&D.
Product development where performance is uncertain
Developing a product whose performance could not be predicted from existing designs, requiring iterative prototyping and testing to resolve a technological question. Designing a new variant, size, format or configuration using established methods is product design, and commercial novelty is not a technological advance.
Joining, forming and machining methods
Developing a welding, bonding, forming or machining approach for a material combination, geometry or tolerance where existing procedures and parameters did not produce an acceptable result, and the underlying behaviour was genuinely uncertain. Qualifying an established procedure to a standard, and iterative refinement using known techniques, is skilled production engineering.
Automation, robotics and inspection systems
Work where the sensing, handling of variability, control or measurement required exceeded the capability of available technology, and a technological solution had to be developed rather than configured. Selecting, installing, programming and commissioning equipment for the application it was designed for is procurement and integration.
Scale-up from laboratory or pilot to production
Moving a process from small scale to repeatable commercial manufacture, where behaviour at scale could not be predicted and uncertainty arose in yield, purity, stability, contamination, throughput or process interaction. Routine transfer of a proven process to a larger line is not R&D.
Food and beverage process and product development
Work on stability, shelf life, structure, texture or processing where the underlying food science was uncertain, for example reformulating to remove an ingredient while retaining the functional behaviour it provided in the process. Recipe development for taste, appearance, cost or consumer preference is not a scientific or technological advance, even where it is technically demanding.
What normally does not qualify?
- Routine production improvement, optimisation, debottlenecking and efficiency work using known methods.
- Selecting, installing, programming and commissioning equipment for the purpose it was designed for.
- Adopting a material, technique, technology or system that is established in the sector but new to your business.
- Design for manufacture, tooling and new variants produced using established engineering practice.
- Routine quality control, inspection, testing, calibration and batch release.
- Statistical process control, lean, continuous improvement and other established management or process methodologies.
- Regulatory, certification, food safety and customer approval work carried out to satisfy a requirement rather than resolve a technological uncertainty.
- Cosmetic, packaging format, branding and product presentation changes.
Technical difficulty, capital cost, customer pressure and the fact that a project is new to your business do not, on their own, establish eligibility. Nor does the sector you operate in. Manufacturing companies do not qualify for R&D tax relief; specific projects within them may.
What evidence supports a claim?
Evidence should show what was known at the start, what advance was sought and why the technical route was not readily deducible. Useful contemporaneous evidence can include:
- The existing process or product specification, and the performance it could not achieve.
- The identity and relevant experience of competent professionals.
- Trial plans, run sheets and the parameters used on each attempt.
- Test, inspection and measurement data, including results that failed.
- Scrap, yield, reject and downtime data across the development period.
- Design iterations, drawings and engineering change records.
- Records of approaches attempted and abandoned, and the reasoning.
- Contracts and customer specifications, which determine who is entitled to claim.
- Project accounting, time records and cost-apportionment methods.
The absence of a particular document does not automatically prevent a claim, but the company must provide a coherent, supportable explanation of the work and costs.
Which costs may be included?
The rules for contractors, externally provided workers and overseas activity require particular care. Eligibility depends on the accounting period, contractual arrangements, who decided to undertake the R&D and where the work took place.
Production and distribution costs, capital expenditure, land and the cost of patents or trademarks are not qualifying R&D expenditure under these reliefs.
Consumable materials used or transformed during qualifying R&D can be included, but materials incorporated into an item that is subsequently sold or transferred to a customer generally cannot. Prototypes and trial runs that end up as saleable product are the most common source of disallowed cost in manufacturing claims, and this has to be decided cost by cost rather than as a blanket rule.
See the qualifying R&D costs guideR&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
Enter your best estimate of spend on qualifying R&D activity. This is not your total development, engineering or project budget.
Qualifying spend covers only the staff time, contracted-out R&D, externally provided workers, consumables, software, data licence and cloud costs attributable to work that sought a scientific or technological advance. Most companies overestimate this figure before a technical review, so treat whatever this produces as an upper bound rather than a target.
For periods beginning on or after 1 April 2024, overseas contracted-out R&D and externally provided worker costs are generally restricted. Limited exceptions apply where necessary conditions cannot reasonably be replicated in the UK; lower costs or overseas worker availability alone are not enough.
How Lexmore helps
1. Assess the technical position
We speak with the people who understand the work and test each project against the tax definition of R&D. If we do not believe the work meets the test, we say so before recommending a claim.
2. Establish the evidence
We identify the baseline, advance, uncertainties, competent professionals and supporting records, including any gaps that should be addressed before submission.
3. Review the expenditure
We map costs to qualifying activities, consider the relevant scheme and document the basis of any apportionment and external arrangements.
4. Prepare the claim
We prepare the technical and financial support and the Additional Information Form, then coordinate the Corporation Tax return position with the company or its accountant.
5. Provide enquiry support
If HMRC opens an enquiry, we manage correspondence and defend the technical and financial basis of the claim. We cannot determine HMRC's decision or represent clients at tribunal.
If a claim is reduced or denied, the company may have to repay relief and HMRC may charge interest and, in some circumstances, penalties. Read about R&D enquiry support.
Which R&D scheme applies?
For accounting periods beginning on or after 1 April 2024, qualifying companies generally claim under the merged R&D expenditure credit scheme. Enhanced R&D Intensive Support may instead be available to a qualifying loss-making, R&D-intensive SME.
Earlier periods fall under the previous SME and R&D expenditure credit rules. The accounting period, company position, contracting arrangements and any connected companies must be considered before treatment can be confirmed.
Find out which R&D scheme applies.Could Patent Box also apply?
Manufacturers that develop and commercialise patented products or processes may also need to consider Patent Box. Where a company owns or exclusively licenses a qualifying patent, has undertaken qualifying development on it, and earns income from exploiting it, an effective 10% Corporation Tax rate can apply to qualifying relevant IP profits.
Manufacturing raises two questions more often than other sectors. Where a product incorporates a patented component or process, the qualifying income is worked out by reference to the relevant IP profits attributable to it after the required calculation, not by reference to the sale price of the finished product, so the benefit is usually a good deal smaller than the headline rate suggests. And where the patent sits with a parent company, a customer or a joint venture rather than with the manufacturer, entitlement has to be established before anything else is considered.
An election is required within a time limit, which is why the position is worth reviewing as a patented product moves into profit rather than several years later. Holding a patent does not by itself qualify a company for Patent Box, and it does not evidence an R&D claim. The two regimes apply different tests.
Explore Patent Box tax relief.R&D claim deadlines
For a period of account lasting 18 months or less, the claim deadline is generally 24 months from the final day of that period. A different 42-month rule applies where the period of account is longer than 18 months.
Some companies must also submit a claim notification within six months after the end of the period of account. Exemptions and exceptions apply, so previous claims and filing dates must be checked.
See how and when to make an R&D claim.Frequently asked questions
Does improving a production process qualify?
Sometimes, but process improvement is the single most over-claimed category in manufacturing. Making a line faster, more reliable or more efficient using known methods is production improvement, not R&D, however valuable the result. The work qualifies where the required performance could not be achieved by any established approach and the technical route had to be found experimentally. If your process engineers knew what to do and simply had to do it, that is not R&D.
Can we claim for prototypes and test pieces?
Consumable materials used or transformed during qualifying R&D can be included, and that covers materials consumed in building and testing prototypes. The restriction that catches manufacturers is that materials incorporated into something subsequently sold or transferred to a customer generally cannot be claimed. A prototype that ends up being sold, or a trial run that goes out as saleable product, takes its materials outside the claim. This needs deciding cost by cost, not applied as a blanket rule.
We manufacture to our customers' specifications. Can we still claim?
It depends on the contract, not on who did the work. For accounting periods beginning on or after 1 April 2024, entitlement to contracted-out R&D turns in part on which party intended or contemplated that R&D would be undertaken. Where a customer specified the outcome and knew development would be needed, the customer may be the party entitled to claim. Where you encountered uncertainty the customer never anticipated, the position may be different. For manufacturers in a customer-led supply chain this is often the question that decides whether there is a claim at all, and it should be reviewed before any cost is identified.
Does buying new machinery or automating a line qualify?
Not on its own. Capital expenditure on plant and equipment falls outside R&D tax relief entirely, though capital allowances or Research and Development Allowances may be available and should be reviewed separately. Installing and commissioning equipment for the job it was built for is procurement. Where making the equipment work in your environment required developing a technological solution that did not previously exist, that development work may qualify, and the claim needs to isolate it from the wider project.
What records should we keep during a project?
Records created while the work happened carry far more weight than a narrative reconstructed at year end. The most useful are design iterations and revision histories, trial and test results including the failures, scrap and rejection data, engineering decision notes, process parameter changes and the reasoning behind them, and time records that tie named people to specific projects. You do not need records created for the purpose of a claim. Most manufacturers already hold enough; the difficulty is usually locating it rather than producing it.
Discuss your manufacturing projects
We will help establish which projects meet the R&D definition, what evidence supports them, and whether preparing a claim is appropriate. On manufacturing work that includes reviewing your customer contracts, because where you make to a customer's specification, entitlement to claim is often less obvious than whether development took place.
If we do not believe the work meets the test, we will tell you plainly and before you have committed to anything.