R&D tax credits are a government relief that reduces your company's corporation tax bill or provides a cash payment for spending on research and development in science or technology.
For UK agency founders, R&D tax credits apply when your agency develops new software, tools, or processes that resolve scientific or technological uncertainty. This is not limited to white-labelled tech companies. If your agency builds custom software for clients, automates workflows, or creates proprietary platforms, you may qualify. The key test is whether your project advances knowledge in a field of science or technology, not whether it succeeds commercially.
There are two schemes. The RDEC (Research and Development Expenditure Credit) scheme is for large companies, but most agencies use the SME R&D Relief scheme if they have fewer than 500 employees and turnover under €100 million. Under the SME scheme, you can claim up to 86% of your qualifying R&D costs as an enhanced deduction. For example, if you spend £100,000 on qualifying costs, you can deduct £186,000 from your taxable profits. If your agency is loss-making, you can surrender the loss for a cash payment worth up to 14.5% of the qualifying costs.
Qualifying costs include staff salaries, employer's National Insurance, pension contributions, software licences, cloud computing costs, and subcontractor fees (subject to restrictions). For 2025/26, the rates are unchanged from the previous year. The SME payable credit rate remains 14.5% for loss-making companies, and the RDEC rate is 20% (with a 15% net benefit after tax).
Common qualifying agency activities include building a bespoke content management system, developing a proprietary analytics dashboard, creating automated reporting tools, or integrating AI into client campaigns where the outcome is uncertain. Routine website builds using existing templates do not qualify.
Claims must be submitted within two years of the end of your accounting period. HMRC has increased scrutiny of R&D claims, so you need clear technical narratives and supporting evidence. Since 2024, all claims must be made digitally and include a breakdown of qualifying costs.
When this matters for agency founders: If your agency invests in developing new software, tools, or processes that push technical boundaries, R&D tax credits can return significant cash to your business or reduce your tax bill. This is especially valuable for agencies reinvesting profits into innovation, as the relief directly supports your growth without diluting equity.