Use the Marginal Relief calculator to calculate how much Marginal Relief you can claim on your Corporation Tax.
You can claim Marginal Relief if your company’s profits are between £300,000 and £1.5 million.
Start now on the HMRC service
Before you start
You’ll need to know:
- your Corporation Tax accounting period
- your taxable profits
If your company’s owned by another company or owns another company (known as ‘associated’), enter the total of all associated companies’ profits in the ‘company profit’ box.
You can’t use this tool to calculate Marginal Relief if your company gets its income from oil rights or extraction.