What Are R&D Tax Credits?
Research and Development (R&D) tax credits are a government incentive that allows companies to claim back a proportion of their R&D spending as a tax reduction or cash repayment. The scheme is designed to encourage innovation — and it is broader than most business owners realise. You do not need to be a pharmaceutical company or technology firm to qualify.
Who Can Claim R&D Tax Credits?
UK limited companies that spend money on qualifying R&D activities can claim. Sole traders and partnerships cannot claim R&D tax credits directly. Qualifying R&D means work that seeks to make an advance in science or technology and involves resolving a scientific or technological uncertainty. Many software, manufacturing, engineering, food technology, and other companies qualify without realising it.
What Costs Qualify?
Qualifying R&D costs include: employee salaries and NIC for staff directly working on R&D, subcontractor costs (65% of qualifying subcontractor spend for SMEs), materials and consumables used in R&D, software costs used directly in R&D, and certain utility costs attributable to R&D. Pure commercial or administrative activities, capital expenditure, and customer-funded R&D generally do not qualify.
The SME Scheme vs RDEC
From April 2024, HMRC moved to a merged R&D scheme for most companies. Under the merged scheme, most companies receive an above-the-line credit of 20% of qualifying R&D costs, which is taxable. For loss-making R&D-intensive SMEs (those spending more than 30% of total expenditure on R&D), an enhanced credit rate applies. The previous separate SME scheme (which offered 186% enhancement) has been replaced for most companies, though R&D-intensive loss-making SMEs retain better terms.
How Much Can You Claim?
Under the merged scheme, a company spending 100,000 GBP on qualifying R&D could receive approximately 19,000-20,000 GBP reduction in their tax bill (at a 19-25% corporation tax rate). R&D-intensive loss-making SMEs can receive a cash credit of up to 27p per pound of qualifying spend.
How to Claim
R&D claims are made through the corporation tax return (CT600). An additional information form (AIF) must be submitted to HMRC before or alongside the CT600. Claims must be submitted within 2 years of the end of the accounting period. Many businesses use specialist R&D tax advisers to identify qualifying costs and prepare the technical narrative that supports the claim.
FAQ
Do I need a specialist to claim R&D tax credits?
Not legally required, but specialist R&D tax advisers add significant value — they know which costs qualify, prepare the technical narrative, and reduce the risk of HMRC enquiry. They typically charge 15-25% of the credit claimed, paid only on success. For credits above 5,000-10,000 GBP, a specialist is usually worthwhile.
Further Reading
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Learnsignal Education Team
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