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R&D Tax Relief — Merged RDEC Scheme

Offers tax relief for qualifying United Kingdom corporations investing in scientific and technical innovation costs above baseline.

HM Revenue and CustomsUnited KingdomTax credit

The Merged R&D Expenditure Credit (Merged RDEC) is the current UK R&D tax relief for all companies with accounting periods beginning on or after 1 April 2024. It replaced both the old RDEC (large companies) and old SME R&D relief. Any company chargeable to Corporation Tax that carries out qualifying R&D — projects seeking an advance in science or technology that resolve genuine scientific or techn

AIBiotechClimate TechEnergy TechHardwareIoT & EdgeAdvanced ManufacturingAdvanced MaterialsMedtechPhotonicsQuantumRoboticsSemiconductorsSpaceSynthetic BiologyMobility

Each grant below is a distinct funding opportunity with its own eligibility, scope, and deliverables.

Last verified: 31 May 2026Source: www.gov.uk