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New R&D tax relief guidance available & the requirement for a claim notification form

Posted 16/04/2024

For accounting periods beginning on or after 1 April 2024, a new merged scheme for research and development tax credit comes into force.

The new merged scheme replaces the old RDEC and small and medium-sized enterprise (SME) schemes.

The new scheme reduces the amount of benefit that would generally have been received under the old scheme.

Loss making R&D intensive SME companies can also benefit from additional support through Enhanced R&D Intensive Support (ERIS).

Broadly speaking, if a company’s R&D expenditure amounts to at least 30% of its total expenditure then it may qualify as R&D intensive.

HMRC has published guidance on how to claim, but if you need any help with an R&D claim or wonder if your business could make a claim, we recommend taking specialist advice & are happy for you to contact us.

Guidance on the merged scheme and ERIS can be found here:

R&D Claim Notification Form

When a limited company intends to make a claim for research and development (R&D) tax relief, from 8 August 2023 onwards it will need to provide detailed information to HMRC in advance.

You will need to set out details of the R&D project(s) undertaken, including the scientific or technical uncertainty that the work was seeking to overcome, along with details of the work done to resolve that uncertainty.

For accounting periods beginning on or after 1 April 2023, there is also a new R&D claim notification form which must be submitted within the ‘claim notification period’, which ends six months after the end of the accounting period for which the company wants to claim R&D relief.

Broadly, new claimants or those who haven’t claimed for three years will need to complete this claim notification form for accounting periods beginning on or after 1 April 2023.

For Government Guidance on R&D claims, please see

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