How do accountants and R&D specialists collaborate on a claim?

Preparing a UK R&D tax relief claim involves more than identifying the qualifying expenditure for that project. It requires a structured assessment of technical activity, financial accuracy, and compliance with HMRC’s legislative framework. 

Each adviser in the R&D tax relief claiming process has a defined role. The business remains responsible for the claim, the accountant provides financial information, and the R&D specialist applies precise knowledge of R&D tax credit claims to ensure compliance with HMRC’s policies.

Why does collaboration matter in UK R&D tax relief?

HMRC has tightened its approach to UK R&D tax relief in recent years. Claims must demonstrate:

• Demonstration of a qualifying advance in science or technology.
• Resolution of scientific or technological uncertainty that was not readily deducible by a competent professional.
• Clear identification of the baseline knowledge available at the time the work was undertaken.
• Accurate calculation and categorisation of qualifying expenditure.
• Submission of a complete Additional Information Form (AIF) prior to filing the CT600.

Accuracy and consistency between the technical explanation and the financial calculation are essential for compliance. A coordinated approach between an accountant and an R&D specialist helps ensure the UK R&D tax relief claim is prepared in a structured and proportionate way.

What is the role of the R&D specialist in a UK R&D tax relief claim?

The Research and Development specialist does not determine the company’s overall Corporation Tax liability. That sits within the wider tax computation. The R&D specialist’s role is to interpret and apply the R&D legislation to ensure that only qualifying categories of expenditure are included in the claim.

This involves reviewing and, where necessary, adjusting the treatment of:

• Staff costs
• Subcontractor eligibility
• Externally provided workers
• Consumables
• Software
• Subsidised expenditure

Connected company rules and the PAYE and NIC cap must also be applied correctly. These are not accounting treatments, they are statutory requirements within the R&D regime. A claim that is technically sound but financially misapplied remains at risk of an enquiry. 

An R&D claim can be managed end to end without substantive accountant involvement. The R&D specialist ensures that both the technical qualification and the legislative treatment of expenditure are aligned with the UK R&D tax relief framework.

What is the accountant’s role in a UK R&D tax relief claim?

The accountant’s role sits within the company’s wider tax and compliance obligations. The accountant will provide accounting documentation and other necessary financial information to the R&D specialist. 

A UK R&D tax relief claim is submitted through the Corporation Tax Return. It must integrate correctly into the company’s tax computation and statutory accounts. For accounting periods beginning on or after 1 April 2023, the Additional Information Form must be submitted before the CT600. Timing and coordination are essential.

In a UK R&D tax relief claim, financial integrity is as important as technical eligibility. Expenditure must align with the accounts as any discrepancy can prompt HMRC queries.

How should roles be established at the start of a UK R&D tax relief claim?

At the outset, clarity must be applied to the claim as this will reduce risks appearing later in the process. 

Early discussions should identify:

• Which projects are being considered for UK R&D tax relief.
• Who the competent professionals are.
• What documentation is available to support the technical position.
• How relevant costs are recorded and tracked within the business.

Expenditure cannot be included in a claim unless the underlying activity meets HMRC’s definition of qualifying R&D. Equally, technical qualification alone is insufficient without an accurate and supportable financial calculation.

How are technical analysis and expenditure aligned?

For a UK R&D tax relief claim to be compliant, the technical narrative and the financial calculation must precisely align.

Once qualifying activities have been identified, the R&D specialist will define and apply a reasonable and justifiable apportionment of relevant costs to those activities. Costs are attributed to the activities that were carried out to resolve the identified scientific or technological uncertainties.

The methodology must reflect how the work was carried out in practice. It must also be capable of clear explanation and supported by sufficient evidence in the event of an HMRC enquiry.

The R&D specialist will advise on how qualifying costs should be established, calculated, and documented so that the financial treatment directly reflects the qualifying activities. Alignment between the technical narrative and the R&D expenditure claimed reduces exposure to HMRC enquiry.

What happens during the pre-submission review?

Before submitting a UK R&D tax relief claim, a final review will take place.

The R&D specialist confirms that:

• The qualifying activity is clearly explained.
• Technical uncertainties are properly described.
• Baseline knowledge available at the time is clearly explained and supported by evidence.
• The Additional Information Form reflects the technical position accurately.

Even well-prepared UK R&D tax relief claims may be subject to enquiry. The aim is not to eliminate all risks. It is to ensure that the claim is structured, proportionate, and aligned with HMRC guidance.

Key summary

In straightforward terms:

• The accountant supplies verified financial information to the R&D specialist.
• The R&D specialist assesses qualifying activity, establishes technical uncertainty and baseline knowledge, prepares the technical documentation, and structures the R&D element of the claim.
• The company remains responsible for the accuracy of the submission.

Clear division of responsibility leads to a more consistent and defensible UK R&D tax relief claim.

Want to know more about claiming R&D tax credits? 

If you’d like to discuss how this collaborative approach could work for your business, or you want an initial view on whether your activities may qualify as R&D for tax purposes, please don’t hesitate to contact us and speak with the Alexander Clifford team. 

We assess UK R&D tax relief claims with a focus on accuracy, proportionality, and compliance.