Breaking it down: ERIS R&D Tax Credit Scheme

Breaking it down: ERIS R&D Tax Credit Scheme

Read time
2 Minutes

Breaking it down: ERIS R&D Tax Credit Scheme

ERIS Introduction 

Enhanced R&D Intensive Support (ERIS) was introduced at the same time as the merged scheme, for accounting periods beginning on or after 1st of April 2024. This means that the first full accounting periods impacted by ERIS will be companies with a March 2025 year end.  However, there could a be shorter period that started after 1st April 2024. 

Background: What is ERIS and why was the ERIS scheme brought in?  

As some background, the merged scheme is a combination of RDEC and the SME scheme. Going forward, for accounting periods beginning on or after 1st April 2024, all companies no matter size will claim under this. However, HMRC recognised that there are loss-making companies that are undertaking high-intensity R&D projects would need a higher rate of relief to continue to innovate effectively. Claiming under the ERIS scheme facilitates an additional relief for eligible claiming companies. This means that businesses who qualify for ERIS are able to receive higher benefit from the R&D tax relief than those claiming under the merged scheme. 

The ERIS scheme was designed specifically for loss-making SMEs and operated the same way that the SME scheme worked previously. The benefit for qualifying companies is more generous: for example, under ERIS a company can deduct an extra 86% of qualifying R&D costs (on top of the 100% deduction) giving a total deduction of 186%; known as the additional deduction. The additional deduction effectively increases the trading loss position in the period. For eligible loss-making SMEs, the outcome of this is tax credit at the rate of 14.5% of the surrenderable loss. In a suitable scenario, this can translate into an effective benefit of up to roughly 27p of cash per £1 of qualifying R&D spend.

What are ERIS eligibility criteria?

To qualify for ERIS, companies must meet a certain criteria to ensure qualification. To claim under ERIS, companies must:

1. The company must be an SME (fewer than 500 headcount and less than €100 million turnover or less than €86 million in total assets.

2. The company must be loss making

3. The business must devote at least 30% of their overall expenditure within the company (and connected companies) to qualifying R&D expenditure.  

I want to explore if my business is eligible to claim under ERIS:  

We encourage potentially eligible businesses to have a conversation around ERIS and if this is suitable for your business. At RCK Partners, we would be more than happy to facilitate this conversation.

If you have any questions or would like to learn more about the scheme please read our R&D tax credit webpageor get in touch.

Written by Albert Cabral, Assistant R&D Manager.

Explore other articles

RCK's 2025 Budget Summary

The 2025 Budget was highly anticipated, fuelled by extensive speculation in the lead-up to it. This speculation ended slightly prematurely with the unforeseen leak of the OBR forecast, which preceded Reeves' delivery.

November 27, 2025
8 minutes

10 minutes with Lord Philip Hammond: Our interpretation of his behind-the-scenes insight into Budget preparation from the perspective of a former Chancellor

In speaking with Lord Philip Hammond, Former Chancellor of the Exchequer, we gained a sense of how he views the Budget process, spanning from two weeks beforehand, through to the days after. With ongoing speculation about the measures Rachel Reeves may introduce, his reflections helped shape a view of the pressures she is facing, where they are coming from, and the actions she may take as the Budget approaches.

November 24, 2025
4 minutes

How are Business Rates Calculated?

Learn how UK Business Rates are calculated and learn about the meaning of rateable value, multipliers, reliefs, and how to challenge your Business Rates valuation.

November 6, 2025
4-5 minutes

Book your free audit