Who is a Competent Professional?

Whilst there is no formal definition of a competent professional within the R&D tax legislation itself, HMRC guidance describes a competent professional as someone with the necessary knowledge, experience, and technical expertise to understand the scientific or technological uncertainties involved in a project.

In practice, a competent professional will typically have a strong technical foundation in the relevant scientific or technological field, practical experience dealing with similar challenges, and a clear understanding of the current state of knowledge within their area of expertise.

Their involvement is important because they are uniquely positioned to distinguish genuine scientific or technological uncertainty — where the outcome could not readily be known or resolved in advance — from work that may be complex, costly, or highly specialised, but which ultimately relies on established principles, standard practices, or readily available solutions.

A competent professional should be capable of assessing:

• whether an advance in science or technology was being sought
• the scientific or technological uncertainties encountered during development
• why the solution was not readily deducible by a competent professional working in the field
• the work undertaken to attempt to resolve those uncertainties
• The competent professional therefore plays a central role in supporting and validating that the activities being claimed meet the legislative definition of R&D for tax purposes.

Who Can Be a Competent Professional?

A competent professional does not necessarily need to hold a formal academic qualification, although qualifications can help support credibility.

The role may be fulfilled by individuals such as:

• senior engineers
• software architects or lead developers
• scientists or laboratory specialists
• technical directors
• product development managers
• experienced industry specialists
• external technical consultants

The key requirement is that the individual possesses relevant expertise in the specific field of science or technology relating to the project. For example:

• A software R&D project may rely on a senior software engineer or systems architect.
• A manufacturing innovation project may require input from a mechanical or process engineer.
• A pharmaceutical development project may require oversight from a chemist or biomedical specialist.

What experience should a Competent Professional have?

HMRC generally expects the individual to demonstrate:

• practical experience within the relevant technical field
• an understanding of current industry knowledge and limitations
• involvement in the project or technical review process
• the ability to explain why uncertainties existed
• knowledge of the methods used to attempt resolution

Relevant evidence may include:

• years of industry experience
• technical certifications
• academic qualifications
• chartered status
• publications or patents
• project leadership responsibilities
• specialist technical training

However, real-world technical expertise is often more important than formal qualifications alone.

Can External Consultants Act as Competent Professionals?

Yes. In some cases, businesses may rely on external consultants or advisors with specialist expertise to support the technical assessment of a project.

However, HMRC generally expects the competent professional to have a genuine understanding of the project work undertaken. External consultants should therefore work closely with the internal technical team to accurately assess the qualifying activities.

How we work with Competent Professionals

At iTax Advisors, we work directly with your competent professionals throughout the R&D claims process to ensure technical activities are accurately identified, documented, and presented in line with HMRC requirements.

Our approach involves collaborating with engineers, developers, scientists, and technical leads to:

• understand the scientific or technological advances being sought
• identify the uncertainties encountered during development
• gather supporting technical evidence and project documentation
• prepare clear and compliant technical narratives
• align technical explanations with the financial aspects of the claim

By combining technical insight with specialist tax expertise, we help businesses prepare robust R&D claims that are well-supported and ready for HMRC review.

If you would like support preparing or reviewing an R&D tax claim, contact our team today.