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Corporation tax

Corporation tax is the tax a UK company pays on its profits, registered for with HMRC within three months of starting to trade.

It is separate from the accounts filed at Companies House, on a separate deadline, and payable before the return is due. A company that has never traded may be able to tell HMRC it is dormant for corporation tax, which does not remove its Companies House obligations.

Related terms

  • Annual accounts — Annual accounts are the yearly financial statements a company files at Companies House and, in a fuller form, with HMRC.
  • Unique Taxpayer Reference (UTR) — A company UTR is the ten-digit reference HMRC issues to a company for corporation tax, sent by post to the registered office shortly after incorporation.

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