Calculate Marginal Relief for Corporation Tax

Use this service to:

  • check your company's eligibility for Marginal Relief
  • calculate how much Marginal Relief your company could be entitled to
  • get an indication of your Corporation Tax and effective tax rates before and after Marginal Relief
HMRC does not use any data you enter within this service. Any calculations produced are for your records only.

Before you start

You need to know:

  • your company's accounting period start and end dates
  • your company's total taxable profit
  • any distributions from non-group, unassociated companies
  • any associated company details
Start now