R&D Tax Credits: Could Your Business Claim Back Thousands?

What Are R&D Tax Credits?

Research and Development (R&D) tax credits are a UK government incentive designed to encourage innovation. They allow companies to claim a reduction in their Corporation Tax bill — or even receive a cash payment from HMRC — based on their qualifying R&D expenditure. Despite being one of the most generous tax reliefs available, many eligible businesses fail to claim simply because they do not realise their work qualifies. You do not need to be developing groundbreaking technology or working in a laboratory to be eligible.

What Qualifies as R&D?

HMRC uses a broad definition of R&D based on the guidelines published by the Department for Science, Innovation and Technology (DSIT). To qualify, your project must seek an advance in science or technology. It must involve overcoming scientific or technological uncertainty — meaning competent professionals in the field could not easily work out the solution. The advance must relate to your company's trade, and the work must not be routine or straightforward.

Examples of qualifying activities include developing new software features, creating new manufacturing processes, designing prototypes, improving existing products through technical innovation, testing new materials, and automating processes where the technical approach is uncertain. Even if the project ultimately fails, the costs of the R&D attempt can still qualify.

The Merged R&D Scheme (From April 2024)

From 1 April 2024, the previous SME R&D scheme and the RDEC (Research and Development Expenditure Credit) scheme have been merged into a single unified scheme for most companies. Under the merged scheme, companies can claim an above-the-line credit of 20% of qualifying R&D expenditure. This credit is taxable, so the net benefit for a profitable company paying Corporation Tax at 25% is an effective rate of 15% of qualifying spend.

For loss-making companies, the credit can be surrendered to HMRC for a cash payment, subject to a cap linked to the company's total PAYE and NIC liability. This ensures that genuine R&D-intensive businesses can still benefit even when they are not yet profitable.

R&D Intensive SME Scheme

A separate scheme exists for "R&D intensive" SMEs — companies where qualifying R&D expenditure represents 30% or more of their total expenditure. These companies can claim an enhanced rate of relief, with the ability to surrender losses for a payable credit at a higher rate of 14.5%. This scheme is particularly beneficial for early-stage technology companies and startups that are spending heavily on R&D but have little or no revenue.

What Costs Can You Claim?

Qualifying R&D expenditure includes staff costs (salaries, wages, NIC, and pension contributions for employees directly involved in R&D), subcontractor costs (at 65% of the amount paid), consumable materials used in R&D activities, software licences used directly in R&D, and utilities (heat, light, water, and power) apportioned to R&D activities. You can also claim for payments to clinical trial volunteers and contributions to independent research.

Since April 2024, the costs of data licences and cloud computing used in R&D also qualify, which is particularly relevant for tech companies and data-driven businesses.

How Much Can You Claim?

The amount depends on your qualifying expenditure and the scheme you are claiming under. As a worked example, consider a company with £200,000 of qualifying R&D expenditure under the merged scheme. The R&D credit would be 20% of £200,000 = £40,000. After Corporation Tax at 25%, the net benefit is £30,000. For an R&D intensive SME surrendering losses, the benefit could be even greater. Many of our clients are surprised by how much they can claim — even modest amounts of R&D spend can produce a meaningful tax saving.

The Claim Process

R&D tax credit claims are made through your Company Tax Return (CT600). You will need to identify and quantify your qualifying R&D projects, calculate the eligible expenditure, prepare a technical narrative explaining the scientific or technological advance sought and the uncertainties encountered, and include an Additional Information Form (AIF) which has been mandatory since August 2023. The AIF requires detailed information about each R&D project, including a description of the advance, the baseline knowledge, and the uncertainties overcome.

HMRC has increased its scrutiny of R&D claims in recent years, so it is important that your claim is well-documented and supported by robust technical evidence. Poorly prepared claims risk delays, enquiries, and potential penalties.

Common Mistakes to Avoid

• Not claiming at all: The biggest mistake is assuming your work does not qualify. Many businesses in sectors such as engineering, construction, food manufacturing, financial services, and agriculture carry out qualifying R&D without realising it.
• Overclaiming: Including costs that do not relate to genuine R&D activity is a red flag for HMRC and can lead to your entire claim being rejected.
• Poor record-keeping: You need to be able to demonstrate which employees worked on R&D, how much time they spent, and what materials were consumed. Keep contemporaneous records rather than trying to reconstruct them at year-end.
• Missing the deadline: R&D claims must be made within two years of the end of the accounting period in which the expenditure was incurred.
• Not using a specialist: R&D claims are complex and technical. Using an accountant or adviser with specific R&D expertise will ensure your claim is maximised and compliant.

How London Accountant Can Help

Our R&D tax credit specialists have helped businesses across London and the South East claim millions of pounds in R&D relief. We handle the entire process — from identifying qualifying projects and costs to preparing the technical narrative and submitting the claim to HMRC. We work on a success-fee basis for many clients, meaning you only pay if your claim is successful. Contact us today for a free, no-obligation assessment of whether your business could benefit from R&D tax credits.