Published 1 January 2007
Last updated 19 December 2022
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19 December 2022
Use the calculator to check if you can reduce your Corporation Tax bill through Marginal Relief from 1 April 2023.
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19 January 2022
The Marginal Relief tool should only be used to calculate marginal relief on corporation tax profits up to 1 April 2015.
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28 May 2019
Page updated to provide more guidance on who can claim Marginal Relief and how to claim Marginal Relief for Corporation Tax
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2 February 2017
The overview section has been updated to show the new rules ‘before 1 April 2015’.
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1 January 2007
First published.
