HMRC Enquiries Are Changing. Is Your R&D Process Keeping Up?

For many accountancy firms, the biggest shift in the R&D Tax Relief landscape isn't the legislation itself. It's the way claims are being scrutinised now.

Over the last few years, HMRC has made it clear that improving the quality and integrity of R&D claims is a priority. Genuine innovation is still supported, but expectations around evidence, technical analysis and documentation have gone up a lot.

As a result, preparing an R&D claim today takes far more than identifying qualifying expenditure. It needs a process that's solid, transparent, and able to stand up to scrutiny.

For firms advising innovative businesses, that raises an important question:

If HMRC asked to review one of your claims tomorrow, would your process give you complete confidence?

More and more, the answer depends less on the quality of the tax calculation, and more on the quality of the process behind it.

The Focus Has Shifted From Claims to Evidence

In the past, discussions around R&D Tax Relief usually centred on cost. How much had been spent? Which expenditure qualified? What was the expected benefit? Those questions still matter, but they're not enough on their own any more.

Today's claims need to show a clear understanding of the technological or scientific challenges the business actually faced, why existing knowledge couldn't easily solve them, and how those uncertainties were resolved. The supporting evidence isn't an optional extra. It's fundamental to how strong the claim is.

Documentation Should Tell the Story

One of the most useful ways to think about an R&D claim is as a technical narrative backed by evidence, not just a set of figures. A good claim should explain:

• What the business was trying to achieve.

• Why it was technically challenging.

• What uncertainties existed.

• What attempts were made to overcome them.

• What knowledge was gained during the process.

• Who was responsible for the technical decisions.

• How the qualifying expenditure relates to those activities.

If those questions can't be answered clearly, the financial calculation on its own probably won't give enough assurance. Good documentation tells the whole story.

Contemporaneous Evidence Carries Greater Weight

One of the most common problems businesses run into is trying to recreate evidence months, or sometimes years, after a project has finished. Information gathered after the fact can still be useful, but records created during the project itself naturally carry more weight. Examples include:

• Design drawings.

• Engineering calculations.

• Source code repositories.

• Test reports.

• Prototype photographs.

• Laboratory records.

• CAD models.

• Sprint planning documents.

• Internal meeting notes.

• Project management records.

• Technical risk registers.

• Client specifications where appropriate.

No business needs to produce every type of document on this list, but showing that technical decisions were recorded as the project went along makes the overall claim noticeably stronger.

The Technical Narrative Is More Than a Summary

A common misconception is that the technical narrative just describes the finished work. Really, it should explain the journey.

Many projects start with a clear commercial goal but an uncertain technical route, and the narrative should focus on the uncertainty along the way rather than just celebrating the finished product. Take a manufacturer that successfully develops a new production process, for example. The innovation isn't the process itself. It's overcoming the engineering challenges that stopped that process from existing before. Software development is similar: it often qualifies not because an application got built, but because the development team had to overcome genuine technological limitations that couldn't easily be solved with existing knowledge. That distinction matters a great deal.

A Strong Process Starts Before the Claim

One of the biggest opportunities for accountancy firms is simply moving R&D conversations earlier in the client relationship. Waiting until the corporation tax return is being prepared usually means valuable evidence has already gone. Instead, many firms are now building innovation discussions into the year through quarterly reviews, project update meetings, budget planning sessions or operational reviews.

Regular conversations let advisers spot potential qualifying activity while projects are still live, and encourage clients to keep hold of relevant documentation from the start. Being proactive like this improves compliance and claim quality at the same time.

The Competent Professional Is Becoming Increasingly Important

The assessment should be informed by a competent professional with relevant knowledge and experience in the field of science or technology. This person, usually referred to as the Competent Professional, provides valuable insight into the scientific or technological uncertainties encountered during development.

Their role goes further than just confirming the work happened. They help explain why the challenges weren't easily solvable by someone with ordinary knowledge in the field, and why the work genuinely represented an advance. Bringing these people in early usually results in stronger technical narratives and more thorough supporting evidence.

Internal Governance Matters

Many successful accountancy firms now treat R&D Tax Relief with the same governance standards as their other specialist advisory services. That can include:

• Standardised client discovery processes.

• Technical review procedures.

• Consistent evidence requests.

• Internal quality assurance.

• Peer review of technical narratives.

• Clear client communication.

• Secure document management.

• Documented approval procedures before submission.

Being consistent doesn't just improve quality. It reassures clients and regulators alike.

Technology Can Strengthen Compliance

Modern technology has changed how firms manage specialist tax projects. Secure portals, automated workflows and digital audit trails let advisers and clients collaborate far more effectively than the old email chains ever did. Information requests get tracked, documents are stored securely, project milestones get monitored and communications are recorded, and the result is more transparency for everyone involved.

Clients get confidence from it. Accountancy firms get more visibility throughout the engagement. Technical specialists can deliver more efficiently while still keeping a complete audit trail. Technology can't replace professional judgement, but it can genuinely strengthen the process around it.

Quality Over Quantity

One of the most positive developments in recent years is the industry's growing focus on quality. Rather than pushing for as many claims as possible, many advisers now concentrate on making sure every submission is technically solid and fully supported.

That benefits everyone: clients get better advice, accountants carry less risk, and HMRC gains more confidence in the integrity of the regime. Protecting the credibility of R&D Tax Relief, in the end, helps make sure it keeps supporting genuine innovation across the UK economy.

A Practical Review for Your Firm

Every accountancy practice should check in on its R&D process now and then by asking a few simple questions:

• Are we identifying innovation consistently across our client base?

• Are technical conversations happening early enough?

• Do we request enough evidence?

• Is every claim independently reviewed before submission?

• Are our technical narratives detailed enough?

• Would we be comfortable explaining our process during an HMRC enquiry?

• Are clients getting a consistent experience regardless of project size?

If you're not sure about the answer to any of these, that's usually a sign to refine the process, not just the claim.

Looking Ahead

The UK's R&D Tax Relief regime is still one of the most valuable incentives available to innovative businesses. That hasn't changed. What's changed is the level of professionalism expected from the people preparing and supporting claims.

The firms that thrive in this environment probably won't be the ones submitting the highest number of claims. They'll be the firms combining technical expertise, solid governance and transparent processes to deliver advice their clients can genuinely rely on. In today's regulatory landscape, compliance isn't just about getting the numbers right. It's about showing that every stage of the journey, from identifying qualifying activities through to preparing technical narratives and holding on to evidence, has been handled with care, consistency and proper professional judgement.

The strongest R&D claims are rarely built at the point of submission. They're built through the quality of the process behind them.