Value20% above-the-line expenditure credit on qualifying R&D costs for accounting periods beginning on/after 4/1/2024 (net benefit ~15-16.2% after corporation tax); loss-making R&D-intensive SMEs (>=30% of spend on R&D) can claim ERIS worth up to ~27p per £1
DeadlinesOngoing; claim notification form due within 6 months of accounting period end for new claimants (or no claim in prior 3 years)
RequirementsUK corporation-tax company; project seeking advance in science/technology resolving technological uncertainty; qualifying staff, software, consumables and some contracted-out costs; Additional Information Form mandatory with claim
Caveatscredit is taxable income; PAYE/NIC cap applies to payable credits; missing the claim-notification window for new claimants forfeits the claim; process-engineering work on novel decarbonization/RNG/CO2 systems often qualifies — document contemporaneously
Last verified2026-08-24