R&D Tax Relief

Your company may qualify if it is subject to UK Corporation Tax and undertakes projects that seek an advance in science or technology by addressing scientific or technological uncertainties that could not readily be resolved by a competent professional in the field. Qualifying R&D can arise in developing new products, processes, materials or software, as well as making appreciable improvements to existing ones. The project does not need to succeed to qualify.

Eligibility depends on the nature of the work undertaken, rather than simply whether your business describes itself as innovative or carries out product development.

For tax purposes, R&D is more specific than everyday innovation. HMRC looks for a project seeking an advance in a field of science or technology and involving scientific or technological uncertainty. This means that a competent professional could not readily determine whether something was possible, or how to achieve it, using existing knowledge and available information.

The advance must relate to the wider field, not simply be something that is new to your company. Activities directly contributing to resolving the uncertainty, together with certain qualifying indirect activities, can potentially form part of the R&D.

Software development can qualify for R&D tax relief where a project seeks an advance in technology and involves genuine technological uncertainty. Simply developing a new website, application, platform or implementing existing technology is not enough in itself.

Potentially qualifying projects can include work where competent software professionals cannot readily determine how to achieve the required performance, functionality, scalability, security or integration using existing knowledge and techniques. The key question is not "Is the software new?", but "What technological advance was being sought, what uncertainty prevented it being readily achieved, and how did the development team attempt to resolve that uncertainty?"

Yes. A project does not have to succeed to qualify for R&D tax relief. A failed or abandoned project can actually provide strong evidence that genuine scientific or technological uncertainty existed.

For example, a business might develop and test several approaches without achieving the required performance, or conclude that the intended technological solution is not currently feasible. Qualifying R&D generally begins when work starts to resolve the scientific or technological uncertainty and ends when that uncertainty is resolved or the work to resolve it stops.

The important consideration is therefore the nature of the R&D work undertaken, rather than whether the project ultimately delivered a successful commercial outcome.

The rules for contracted-out R&D changed for accounting periods beginning on or after 1 April 2024. Broadly, the company that contracts out R&D may be able to claim the qualifying contracted-out costs where the statutory conditions are satisfied.

A key question is whether it is reasonable to conclude, from the contract and the surrounding circumstances, that the customer intended or contemplated that this type of R&D would be undertaken to meet the contractual obligations. The customer does not necessarily need to carry out the R&D itself.

A contractor may be able to claim for R&D that it undertakes on its own initiative, but generally cannot claim for R&D that it carries out as part of delivering R&D contracted out to it by a customer. The contract, commercial reality, project records and the parties’ intentions should all be considered.

There is no standard fee for R&D tax relief advice. Costs vary depending on the size and complexity of the claim, the number of projects involved, the quality of the information available and the level of technical and financial support required.

Advisers may charge a fixed fee, a fee linked to the value of the benefit achieved, or a combination of the two. When comparing costs, it is important to understand exactly what is included. For example, does the fee cover project identification, technical interviews, qualifying expenditure calculations, preparation of the Additional Information Form, submission support and assistance if HMRC subsequently asks questions?

The cheapest fee does not necessarily represent the best value. The quality and defensibility of the claim, and the support provided if it is scrutinised, should also be considered.

Both approaches have advantages and disadvantages. A fixed fee provides certainty over cost and avoids the adviser's remuneration increasing simply because the value of the claim increases. However, the scope of work and what happens if additional support is required should be clearly defined.

A contingent or percentage-based fee links the adviser's remuneration to the value of the R&D benefit. This can reduce the initial cost of engaging an adviser, but percentage fees can become significant on larger claims and may create incentives to take a more aggressive approach to eligibility or qualifying expenditure.

Whichever model you choose, look beyond the headline percentage or price. Compare the scope of the service, technical expertise, quality assurance, contractual terms and whether HMRC enquiry support is included.

Many accountants provide R&D tax relief services and some have substantial expertise in this area. The question is therefore not simply accountant or specialist, but whether the people preparing your claim have the appropriate tax, technical and sector knowledge.

A robust R&D claim requires an understanding of the tax rules alongside the ability to identify and explain scientific or technological advances and uncertainties. For straightforward claims, your accountant may have all the expertise required. For larger, more complex or technically demanding claims, specialist input can provide additional assurance.

If your accountant already prepares your claim, appointing a specialist does not necessarily mean replacing them. An R&D specialist can work alongside your accountant or provide an independent review of the existing approach.

A good R&D tax relief adviser should do considerably more than calculate a tax benefit. They should help identify potentially qualifying projects, understand the underlying science or technology, establish where genuine scientific or technological uncertainties arose and determine which activities and costs qualify.

The adviser should also gather appropriate evidence, interview relevant technical and financial personnel, calculate qualifying expenditure, prepare the technical narrative and support the completion of the required HMRC information and tax documentation.

Just as importantly, they should challenge areas that do not meet the qualifying criteria. The objective should be a complete, accurate and defensible claim rather than simply producing the largest possible number.

Look for an adviser that combines tax expertise with an ability to understand the science or technology behind your R&D. Ask who will actually prepare the claim, what experience they have in your sector, how projects are assessed and what quality-assurance procedures are used.

You should also understand how the adviser charges, what is included in the service and what support is available if HMRC opens an enquiry. Ask how the adviser deals with projects or expenditure that it believes do not qualify, and whether it is prepared to challenge assumptions rather than simply accept everything presented to it.

The right adviser should be able to demonstrate a rigorous, evidence-based approach, communicate effectively with both your technical and finance teams and give you confidence that the resulting claim can withstand HMRC scrutiny.

The company making the R&D tax relief claim is ultimately responsible for ensuring that it is complete and correct, even where an accountant or specialist adviser prepares the claim on its behalf.

HMRC can amend or reject an incorrect claim and, depending on the circumstances, interest and penalties may also arise. Using an adviser does not transfer the company's responsibility to that adviser.

This makes it important that directors understand what is being claimed, are comfortable with the methodology used and ensure that appropriate evidence supports the claim. A good adviser should explain any areas of uncertainty or judgement rather than simply asking the company to approve a final figure.

There is no single feature that automatically makes a claim high-risk. However, HMRC scrutiny is more likely to cause problems where eligibility is unclear, the technical justification is weak, qualifying expenditure is poorly evidenced or the claim takes an overly broad interpretation of the rules.

Potential warning signs include claiming routine commercial development as R&D, difficulty identifying the scientific or technological advance and uncertainty, unusually high qualifying expenditure, weak supporting records, questionable subcontracting treatment or a technical narrative that does not reflect what actually happened.

Risk should therefore be considered throughout the preparation of the claim, rather than only after HMRC raises questions.

There is no single prescribed set of records that proves an R&D project qualifies. The strongest evidence is generally the contemporaneous information created while the work was actually taking place.

Depending on the project, this might include project plans, technical specifications, design documents, test results, prototypes, trial records, development logs, meeting notes, emails, version histories, timesheets and records of failed approaches. Financial records should also demonstrate how qualifying expenditure has been identified and calculated.

The evidence should help establish what advance was sought, what scientific or technological uncertainties existed, how competent professionals attempted to resolve them and which activities and costs related to that work.

A strong technical report should explain why the projects included in the claim meet the definition of R&D for tax purposes. It should be written so that someone reviewing the claim can understand the technological or scientific challenge without needing detailed prior knowledge of the business.

For each representative project, it should clearly describe the relevant field of science or technology, the existing knowledge or capability, the advance being sought, the scientific or technological uncertainties encountered and the work undertaken to resolve them. It should also explain the role of competent professionals and distinguish qualifying R&D from routine development or commercial activity.

The report should be specific to what actually happened. Generic descriptions, excessive technical jargon or narratives that simply describe the commercial project without explaining the underlying R&D can weaken rather than strengthen a claim.

Yes, although you should check the terms of your existing adviser agreement before making a change. Some R&D tax relief advisers operate under contracts that include minimum terms, notice periods, exclusivity clauses, automatic renewals or provisions governing fees if the relationship is terminated early. These may affect when and how you can appoint another adviser.

Subject to your contractual position, you can appoint a new adviser to prepare future claims. A new adviser will normally want to understand your previous claims, methodology and any correspondence with HMRC before preparing the next one. This can also provide an opportunity to review how projects and qualifying expenditure have previously been identified and documented.

Changing adviser should not in itself cause a problem with HMRC. The important consideration is that each claim is complete, accurate and supported by appropriate evidence.

You might consider changing adviser if you are no longer confident in the quality, technical rigour or level of support you receive.

Warning signs could include limited engagement with your technical teams, generic technical reports, insufficient challenge over eligibility or expenditure, unexplained changes in claim value, poor communication, unexpected fees or inadequate support when HMRC raises questions.

A change may also be appropriate because your business has evolved. More complex R&D, larger claims, international activities or increased HMRC scrutiny may mean you require a different level of specialist expertise.

Before deciding to move, however, review your existing contract carefully. You may be subject to a notice period, minimum contract term, exclusivity provision, automatic renewal or termination charges. Understanding these obligations will help establish when you can move and whether there are any financial or practical implications.

Even where you are contractually committed to an existing adviser, you may still be able to obtain an independent second opinion or review, although the terms of your agreement should be checked first.

Yes. An independent review can assess whether a previous or current claim has been prepared using an appropriate methodology and whether the technical and financial evidence adequately supports it.

The review might consider project eligibility, the identification of scientific or technological advances and uncertainties, qualifying expenditure, subcontracting arrangements, technical documentation and consistency with the information submitted to HMRC.

The purpose should not simply be to find additional expenditure to increase the claim. A good review should identify both potential omissions and areas of unnecessary risk, giving you a clearer view of the overall robustness of the claim.

Yes. A second opinion can be useful if you are uncertain about eligibility, concerned about the approach taken by your existing adviser or accountant, or simply want additional assurance before submitting a significant or complex claim.

An independent specialist can review the technical basis of the claim, qualifying expenditure, supporting evidence and the way the position has been presented to HMRC.

Importantly, obtaining a second opinion does not mean you have to change adviser. It can provide an independent assessment of whether the claim is reasonable, well evidenced and defensible, allowing you to decide whether any changes are needed before proceeding.

If HMRC opens an enquiry, it will normally ask questions or request further information to establish whether the claim meets the requirements of the R&D tax relief legislation. This may involve examining the scientific or technological basis of the projects, qualifying expenditure, subcontracting arrangements and evidence supporting the claim.

HMRC may issue several rounds of questions, and responses should address the points raised clearly and accurately, supported by appropriate technical and financial evidence.

An enquiry does not automatically mean that a claim is incorrect. HMRC may ultimately accept the claim as submitted, agree adjustments with the company, or conclude that some or all of the claim does not qualify. Where appropriate, decisions can also be challenged through the available review and appeal processes.

There is no fixed timescale. An R&D enquiry can potentially be resolved within a few months, while more complex cases may take considerably longer, particularly where there are multiple rounds of correspondence, complex technical issues or disagreement over eligibility or expenditure.

The quality and completeness of the original claim and the company's ability to provide clear evidence can affect how straightforward the process is. Responding promptly and comprehensively to HMRC's questions can also help avoid unnecessary delays.

Businesses should therefore avoid assuming that an enquiry will be resolved quickly and should consider the potential impact on tax, cash flow and internal management time.

Ideally, you should understand before appointing an adviser what support they will provide if HMRC subsequently challenges the claim.

An adviser that prepared the claim is usually well placed to help because it should understand the projects, calculations and reasoning behind the submission. However, enquiry support is not necessarily included within every R&D advisory agreement. Some advisers include it within their standard fee, while others charge separately or limit the amount of support provided.

Check your engagement terms carefully to understand what is included, whether there are additional charges and how far the adviser will support the enquiry.

If you are not confident in the original claim or the adviser that prepared it, you can also seek independent specialist support to review the position and assist with the HMRC enquiry.

There is no standard cost. It will depend on the complexity of the enquiry, the number and nature of HMRC's questions, the quality of the original claim and supporting evidence, and how long the enquiry continues.

Some R&D advisers include enquiry defence within their original fee or offer a defined level of support. Others charge separately, potentially using fixed fees, hourly or daily rates, or staged fees as the enquiry progresses.

Before appointing an R&D adviser, it is therefore worth asking what would happen if HMRC opened an enquiry, exactly what support is included and what additional costs could arise.

If an enquiry is already under way, the scope and likely cost of defence should ideally be agreed after an initial review of the claim, HMRC correspondence and supporting documentation, so that both the business and adviser understand the work likely to be required.