What the R&D tax relief advance assurance pilot means for SMEs
HMRC has introduced a new R&D tax relief advance assurance pilot to help SMEs gain earlier certainty on complex aspects of their claims.
Launched 18 May 2026, the 12-month pilot reflects the increasing pressure on businesses to ensure R&D claims are accurate, compliant and well-supported.
For SMEs investing in innovation, it offers an additional opportunity to gain clarity earlier in the claims process and approach submissions with greater confidence.
How does the R&D advance assurance pilot work?
The pilot allows SMEs to seek HMRC’s view on specific aspects of their R&D tax relief claim before submitting it.
Unlike the existing full advance assurance scheme, this is a targeted service. Businesses can make up to two applications for assurance, but each application is limited to one project and one area of R&D relief.
It’s also important to note that the service is:
- Voluntary.
- Available to SMEs only.
- Structured to provide responses within 40 days (where sufficient information is provided).
What can HMRC provide assurance on?
Under the pilot, SMEs can request HMRC’s view on key areas that are often subject to challenge, including:
- Whether a project qualifies as R&D for tax purposes.
- Whether overseas expenditure is eligible.
- Whether contracted-out R&D can be claimed.
- Whether the PAYE/NIC cap exemption applies.
How will this benefit SMEs claiming R&D tax relief
With increased HMRC scrutiny, many businesses face uncertainty when preparing R&D claims. The pilot can help SMEs to:
- Gain earlier clarity on complex areas of a claim.
- Strengthen documentation and evidence.
- Make informed decisions before submitting a claim.
This can be especially valuable for companies in sectors such as technology, engineering, manufacturing and life sciences, where projects often involve subcontracting or overseas elements.
Key considerations before applying
While the pilot offers clear benefits, businesses should approach it strategically, here are some actions we recommend you take before applying.
1. Select the right issues
Businesses can make up to two applications in total, so focus on the highest-risk areas where early clarification would be most valuable.
2. Prepare a robust application
HMRC’s response will depend on the quality of information provided. Clear technical narratives and supporting evidence are essential.
3. Consider timing carefully
Early engagement can provide greater certainty, but it may also bring forward HMRC scrutiny.
4. Remember this is not a substitute for a claim
Businesses must still submit a full R&D claim via their Corporation Tax return and complete all required documentation.
Businesses should also check the main eligibility conditions before applying. The service is only available where:
- The business is an SME that has not yet claimed R&D tax relief for the relevant period.
- Assurance is being sought on no more than two areas.
- Full claim advance assurance has not been requested for the same period.
- Neither the company nor a connected person has entered a DOTAS arrangement, been categorised as a Corporate Serious Defaulter, or is subject to an open Corporation Tax enquiry
How does this differ from full advance assurance?
The existing full advance assurance scheme remains available, but a company cannot apply for both services for the same period. The pilot is best suited to SMEs seeking clarity on specific issues rather than reassurance across an entire claim.
How Price Bailey can help with R&D advance assurance
Deciding whether to use the advance assurance pilot and preparing a strong application requires careful consideration. At Price Bailey, we support SMEs with:
- Assessing R&D claim eligibility and risk areas.
- Advising on whether advance assurance is appropriate.
- Preparing high-quality submissions to HMRC.
- Managing claims and responding to HMRC enquiries.
Speak to our R&D tax specialists
If you are planning an R&D claim or want to understand how the advance assurance pilot could support your business, our team is here to help.
Contact our team using the form below to discuss your R&D tax relief and claim with confidence.
We always recommend that you seek advice from a suitably qualified adviser before taking any action. The information in this article only serves as a guide and no responsibility for loss occasioned by any person acting or refraining from action as a result of this material can be accepted by the authors or the firm.
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