CIRD127000 | R&D Tax Reliefs: reformed reliefs: ERIS: rates
From HM Revenue & Customs · Corporate Intangibles Research and Development Manual
SME rates (accounting periods beginning before 1 April 2024):
| Expenditure incurred on or after | Additional deduction | Enhanced expenditure | Payable tax credit |
| 1 April 2000 | 50% | 150% | 16% |
| 1 August 2008 | 75% | 175% | 14% |
| 1 April 2011 | 100% | 200% | 12.5% |
| 1 April 2012 | 125% | 225% | 11% |
| 1 April 2014 | 125% | 225% | 14.5% |
| 1 April 2015 | 130% | 230% | 14.5% |
| 1 April 2023 | 86% | 186% | 10% (14.5% for R&D intensive SMEs – see CIRD123000) |
ERIS rates (accounting periods beginning on or after 1 April 2024 only):
| Expenditure incurred on or after | Additional deduction | Enhanced expenditure | Payable tax credit |
| Pre-1 April 2023 | See SME rate table above | See SME rate table above | 14.5% |
| 1 April 2023 | 86% | 186% | 14.5% |
R&D intensity thresholds :
| Accounting periods beginning on or after | Expenditure incurred on or after | Intensity threshold | Applicable scheme |
| 1 April 2023 | 1 April 2023 | 40% | SME |
| 1 April 2024 | 1 April 2023 | 30% | ERIS |