What Is R&D Tax Credits?
R&D tax credits reward UK companies for investing in innovation. One of the most valuable tax reliefs available — and frequently unclaimed.
Key Takeaways
- R&D tax credits allow enhanced deduction of qualifying R&D costs reducing your corporation tax bill
- Loss-making companies can claim a cash payment from HMRC instead of a tax deduction
- Qualifying R&D is broader than most founders realise — software development often qualifies
- Claims must be made within 2 years of the accounting period end
What R&D tax credits are
R&D tax credits are a UK government incentive allowing companies investing in qualifying research and development to claim an enhanced tax deduction — effectively paying less corporation tax — or, for loss-making companies, receiving a cash payment from HMRC. The scheme is designed to encourage innovation by reducing its after-tax cost and is frequently unclaimed by qualifying companies.
What qualifies as R&D
HMRC defines qualifying R&D as work seeking to achieve an advance in science or technology by resolving a scientific or technological uncertainty — meaning you do not know at the outset whether something can be done or how to do it. Building software that requires solving genuinely novel technical problems often qualifies. Routine software development, cosmetic product changes, or social science research does not qualify.
The SME and RDEC schemes
The SME R&D Relief applies to companies with fewer than 500 employees and either turnover under €100 million or balance sheet under €86 million. From April 2023, the scheme provides an additional 86% deduction on qualifying costs. Loss-making SMEs can surrender the loss for a cash credit from HMRC. The R&D Expenditure Credit (RDEC) applies to large companies and provides a 20% above-the-line credit on qualifying costs.
Qualifying costs
The main qualifying cost categories are: staff costs (salaries, employer NICs, pension contributions) of employees directly involved in R&D; subcontractor costs (65% of payments to qualifying subcontractors); consumables including materials and software licences used in the R&D process. Keep detailed time records of employees working on qualifying R&D — this is essential for substantiating the claim.
How to claim
R&D tax credits are claimed through your annual corporation tax return and an accompanying R&D report describing qualifying projects and costs. Claims must be filed within 2 years of the end of the accounting period. HMRC has increased scrutiny of R&D claims significantly — the quality and specificity of the technical narrative in your claim report is increasingly important. Many companies use R&D tax credit specialists on a contingent fee basis.