HMRC has launched a targeted advance assurance pilot for R&D tax relief, running until May 2027.
With R&D claims now subject to greater scrutiny, this is a clear signal of direction – giving businesses the opportunity to gain early clarity on key aspects of a claim before it’s submitted.
What is the advance assurance pilot?
The pilot allows eligible SMEs to ask HMRC to review and confirm up to two specific areas of a single R&D project before a claim is submitted.
Rather than waiting for HMRC to assess – or potentially challenge – a claim after the fact, this brings part of the process forward. The aim is to provide clarity earlier and reduce the risk of disputes later.
It’s not full approval of an entire claim. HMRC’s full claim advance assurance service is still available for certain SMEs making their first R&D claim, but the pilot can provide confidence on specific areas most likely to determine whether a claim succeeds.
What can you get assurance on?
The pilot focuses on the areas most likely to come under scrutiny. Depending on the project, this could include:
- Whether your project meets the definition of R&D for tax purposes
- Whether overseas expenditure qualifies for relief
- Whether the company can claim R&D relief where work is contracted by one company to another
- Whether the company qualifies for exemption from the PAYE and National Insurance contributions cap
Testing these points early can be particularly valuable where projects fall into grey areas – something that is happening more frequently as HMRC applies tighter criteria.
Who is the pilot aimed at?
This is a targeted scheme – and is likely to be most relevant for:
- SMEs making higher-value or more complex claims
- Businesses operating in areas where qualifying R&D is less clear-cut
- Companies that have faced previous HMRC queries
- First-time claimants, although those eligible for HMRC’s full claim advance assurance service may find that option more appropriate as it covers the entire claim rather than selected areas
For straightforward, low-risk claims, this additional step may offer limited benefit.
Why this matters now
The pilot should be viewed in the context of wider changes to the R&D landscape.
In recent years, we have seen:
- Increased HMRC enquiries and compliance activity
- A stronger focus on technical justification
- Greater scrutiny of costs and methodologies
- A shift towards evidence-led claims
Advance assurance reflects this – offering earlier engagement with HMRC, while reinforcing expectations around accuracy, clarity and supporting evidence.
The potential benefits
For the right business, there are clear advantages:
- Greater certainty – clearer understanding of HMRC’s position before submission
- Reduced enquiry risk – agreed areas are less likely to be challenged later
- More efficient process – fewer follow-up queries and delays
- Stronger internal confidence – reassurance for boards and senior stakeholders
But it’s not for everyone…
This isn’t a default step for all claims.
Points to consider:
- It introduces an additional stage in the process
- Assurance is limited to up to two specific areas of a single R&D project
- It requires clear, well-prepared documentation upfront
For that reason, it is best viewed as a targeted risk management tool, rather than a standard approach.
Should your business consider it?
The pilot is worth exploring if:
- You’re undertaking innovative or borderline R&D activity
- You want to de-risk a significant claim
- You’ve experienced previous HMRC challenge
- You’re looking to build a more robust approach
For businesses with well-established, lower-risk claims, the value may be more limited.
Final thoughts
The direction of travel is clear – R&D tax relief is becoming more detailed, more scrutinised and more evidence-driven.
For some businesses, advance assurance offers a practical way to reduce uncertainty before a claim is submitted. For others, it serves as a reminder that successful R&D claims increasingly rely on robust technical evidence, clear documentation and a well-prepared approach from the outset.
If you’re considering advance assurance, or want to sense-check your next R&D claim, we can help you take a clear and confident approach.
