Corporation Tax Rates 2024 Marginal Relief. Hmrc have released an online tool to help companies calculate their expected tax liability, including any marginal relief that may be due. For the current 2024 fiscal year, the.
£42,523 x 19% = £8,079.37 in corporation tax. For profits from 1 april 2023, use the marginal relief calculator to work out how much marginal relief you can claim on your corporation tax.