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Home / Simons-Taxes /Corporate tax /Part D1 Corporation tax generally /Division D1.4 Research and development tax reliefs /R&D expenditure credit (RDEC) before April 2024 / D1.435A RDEC for large companies and SMEs before April 2024
Commentary

D1.435A RDEC for large companies and SMEs before April 2024

Corporate tax

D1.435A RDEC for large companies and SMEs before April 2024

This article covers the RDEC scheme as it applies for accounting periods beginning before 1 April 20241. For the RDEC scheme that applies for accounting periods beginning on or after 1 April 2024, see D1.417.

R&D large company tax relief

For accounting periods beginning before 1 April 2024, a large company may claim a taxable R&D expenditure credit (RDEC) (sometimes called an above the line credit, as it is taxable)2 for qualifying expenditure.

The credit is calculated directly as 20% of qualifying R&D expenditure for the period (13% for expenditure incurred prior to 1 April 2023, 12% for expenditure incurred prior to 1 April 2020, 11% for expenditure incurred prior to 1 January 2018)3. RDEC is not available to companies that are charities, institutions of higher education or any company as described by Treasury regulations4.

The payable credit is paid at a higher headline rate of 49% to companies in the oil and gas ring-fence.

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Web page updated on 17 Mar 2025 17:28