What is the advance assurance scheme for R&D?
Answered 17 March 2026
HMRC Guidance / Practice
The R&D Advance Assurance scheme is a facility available to small and medium-sized enterprises (SMEs) making their first R&D tax relief claim. Here is how it works:
Who Can Apply
The scheme is available to companies applying for R&D relief for SMEs for the first time. HMRC encourages SMEs making their first R&D claim to consider applying for advance assurance if they have any doubts about how the schemes operate.
How to Apply
A company applies using the advance assurance form. Once HMRC receives the application, they will contact the company to discuss the R&D in more detail. This is normally a short phone call, but may involve a longer discussion or a visit to the company if the case is more complex.
What Advance Assurance Provides
If Advance Assurance is granted:
- HMRC will guarantee the claim will be accepted, as long as it is in line with what was discussed and agreed in the application.
- HMRC will allow the claim without further enquiries for the first three accounting periods of claiming R&D tax relief.
Compliance Handling
Compliance work relating to R&D claims (including advance assurance applications) is handled by trained HMRC Officers, supported by R&D Specialists, within the designated ISBC (Individuals and Small Business Compliance) and WMBC (Wealthy and Mid-sized Business Compliance) teams.
Note: Sources [5/6] and [6/6] in the original retrieved sources relate to advance assurance for Venture Capital schemes (EIS/SEIS/SITR), not R&D tax relief, and have not been relied upon above.
Citation sources
s below, read our simple guide and online guidance. If your company is applying for R&D relief for SMEs for the first time, it could qualify for Advance Assurance. If your company qualifies for Advance Assurance you can apply using the advance assurance form. Once we’ve received your application we’ll contact you to talk about your R&D in more detail. This is normally a short phone call but it may involve a longer discussion or a visit to your company if the case is more complex. If Advance Assu
ble for the R&D for SME scheme. However you may be eligible for R&D Expenditure Credits (RDEC). More information is available on gov.uk/researchand development tax relief for large companies. If no continue to the next question. 6. Is the turnover of your company (or group) not more than €100m or the balance sheet less than €86m? If yes, turnover less than €100m or the balance sheet less than €86m please continue. If no then your company is ineligible for the R&D for SME scheme. However you may
Compliance work is handled by trained HMRC Officers, supported by R&D Specialists, within designated Individuals and Small Business (ISBC) and Wealthy and Mid-sized Business Compliance (WMBC) teams. The approach to handling claims, payable credits and enquiries by ISBC and WMBC is contained in the published practice note CIRD80525. Contact details for R&D Compliance are provided at CIRD80350. Companies are encouraged to contact R&D teams in advance of submitting a claim if they have any doubts a