- By Dov Paluch | Director, Catalyst Solutions
The decision of managing an R&D tax claim in-house usually comes down to one of two things. Either the business believes its internal team know the process well enough, or the cost of engaging a specialist does not seem justified. Neither is a sufficient basis for the decision on its own.
The cost argument in particular is where businesses most often miscalculate. The real cost of managing R&D tax claims in-house is rarely just the time it takes. It shows up in qualifying costs that were missed, and technical narratives that are not in accordance with the legislation and guidelines.
For many companies, the challenge is not one of understanding their R&D projects – it is knowing how to interpret the legislation, in order to document the scientific or technological uncertainties, advancements and boundaries, as well as navigating the relevant application or review process, and connecting the financial claim to a compliant technical narrative.
Some businesses are genuinely well-placed to do this themselves. What it requires is a dedicated person with strong knowledge of the relevant legislation, guidelines and regulations, a clear evidence-gathering process, and a finance function that can trace qualifying expenditure back to specific activities.
The complexity of the claim matters too. A smaller business with a single R&D project, one technical lead and a straightforward cost structure faces a fundamentally different challenge from a business running multiple projects across departments, with costs spread across salaries, contractors, overheads and materials. The decision about how to resource the claim should reflect that complexity.
Where in-house works best is where one person owns the process from start to finish. Not where finance owns the numbers, the technical team owns the narrative, and legal or business owner reviews compliance at the end. A claim built in separate parts, with no single coordinator holding it together, is rarely as strong as one with clear ownership throughout.
In practice, most businesses managing claims internally do not look like the scenario above. They look more like this: a finance manager picking up the claim each year alongside existing responsibilities, a technical team asked for information at short notice, and a process that has never been formally documented because it has always been handled the same way.
When responsibility for the claim sits across finance, tax and technical teams without a clear coordinator, inputs arrive inconsistently, timelines slip, and the final claim reflects whoever managed to contribute rather than a coherent picture of the qualifying work. A strong in-house R&D tax claim requires one person driving the process end to end. Without that, the claim becomes a compilation exercise rather than a properly structured submission.
The technical narrative is the part of the claim that requires the most care. A common mistake is putting too much commercial focus into the technical description and too little focus on the underlying uncertainties, activities and the technological advancements sought. When the narrative is drafted at the last minute by someone not directly involved in the R&D, it tends to be either too vague, too commercially framed and definitely non-compliant to hold up under enquiries.
Qualifying expenditure is not always obvious. Salary costs need to be apportioned against qualifying time and activities. Contractor costs have specific eligibility conditions. Overhead allocations require a defensible methodology. When these decisions are made on the basis of what has always been done rather than a careful application of the relevant legislation, businesses regularly either claim costs that do not qualify or miss costs that do. One creates compliance risk, the other leaves financial value on the table.
A claim assembled and then reviewed for compliance at the end is structurally weaker than one where compliance has shaped the process from the start. The way qualifying activities are identified, how the technical narrative is framed, how evidence is gathered and how costs are connected to qualifying direct or indirect activities all affect how defensible the claim is under examination. In our experience, the claims that attract questions from the tax authority are rarely the ones where something was done dishonestly. They are the ones where the documentation cannot adequately support what was submitted.
This is the distinction that matters most and the one that gets lost most often in the in-house versus specialist debate.
Internal teams understand their R&D projects in a way no external advisor ever fully will. They know what was attempted, what failed, what the technical challenges were and what was ultimately achieved. That knowledge is irreplaceable and it is the foundation of any strong claim.
A strong claim however requires more than project knowledge. It requires turning that knowledge into a specific technical, financial and compliance position that satisfies the relevant authority, whether that is HMRC in the UK, the DSTI in South Africa, or an equivalent body elsewhere. Getting there means understanding how the legislation defines qualifying R&D, how the review or application process works, how to structure a technical narrative that addresses the required criteria, and how to connect the technical work to qualifying costs in a way that is accurate and can be clearly explained to whoever reviews it.
These are different skills from the skills required to do the R&D itself. A capable engineering team is not automatically equipped to write a technical narrative that can pass an enquiry. A finance team that manages accounts efficiently is not automatically equipped to apply the legislative framework to R&D expenditure. Recognising that gap is not a criticism of either team. It is an honest assessment of what the claim process requires.
A specialist R&D tax advisor should not simply take work off your desk. They should improve the quality, clarity and reliability of the claim process.
A good advisor brings a clear process for identifying qualifying activities, gathering evidence, mapping costs and preparing the claim. This reduces uncertainty, keeps the process focused, and means the internal team is guided toward the right information rather than left to figure out what is needed on their own.
A specialist should be able to engage directly with your technical teams, understand the scientific or technological uncertainty in the work, and ask the questions that separate general innovation from qualifying R&D. This is particularly important in sectors where the boundary between routine development and genuine R&D is not always obvious. Without it, the narrative tends to describe outputs rather than the qualifying process.
The technical narrative and the financial calculation need to connect. One of the most common weaknesses in in-house claims is that these two parts are prepared separately and reconciled at the end. A specialist helps build that connection throughout the process, so the costs in the claim are properly traceable to specific qualifying activities rather than allocated by broad assumption.
The aim of a specialist engagement should not be to inflate the claim. It should be to claim the right value, supported by evidence and prepared with compliance at the heart of the process. That means compliance thinking shapes how activities are identified, how the narrative is framed and how costs are included.
Specialist support reduces the burden on internal teams by giving the process structure, guiding evidence gathering and helping teams focus on the information that matters. Rather than coordinating the entire claim alongside existing responsibilities, the internal team’s role becomes providing access to the right people and reviewing the final position.
Your business should come away from the process with a clear understanding of what is being claimed, why it qualifies, how the costs connect and what evidence supports the position. A well-run specialist engagement does not produce a black box. It produces a claim the business can understand, explain and confidently stand behind.
Specialist support is worth considering if any of the following apply.
The companies that benefit most from R&D tax incentives are not necessarily those with the largest R&D programmes. They are the ones whose claims are built on accurate technical descriptions, properly traced costs and documentation that can be explained clearly to whoever reviews it.
Whether that standard is reached through a well-resourced in-house process or through specialist support depends on the business. What it cannot depend on is assumption, last-minute assembly or a compliance review that happens only at the end.
One thing holds true regardless of how you manage the process: the claim is yours. The relevant tax authority holds your business responsible for what is submitted. A good specialist keeps you informed, involves you throughout, and seeks your approval before anything is filed. Make sure you are comfortable with what goes in.
If you want to understand whether your current approach is building claims to that standard, speak to the Catalyst Solutions team. We work with businesses across the UK, South Africa, Australia and Germany, and regularly work alongside internal finance and technical teams to strengthen R&D tax claims.
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