United Kingdom corporation tax

Throughout this article, the unqualified term "pound" and the £ symbol refer to the Pound sterling.

Corporation tax is a corporate tax levied in the United Kingdom on the profits made by companies and on the profits of permanent establishments of non-UK resident companies and associations that trade in the European Union. Prior to the tax's enactment on 1 April 1965, companies and individuals paid the same income tax, with an additional profits tax levied on companies. The Finance Act 1965 replaced this structure for companies and associations with a single corporate tax, which borrowed its basic structure and rules from the income tax system. Since 1997, the UK's Tax Law Rewrite Project has been modernising the UK's tax legislation, starting with income tax, while the legislation imposing corporation tax has itself been amended; the rules governing income tax and corporation tax have thus diverged. Corporation tax is governed by the Income and Corporation Taxes Act 1988 (as amended).