Use this service to file your company, charity or association’s:

  • Company Tax Return (CT600) for Corporation Tax with HM Revenue and Customs (HMRC)
  • accounts to Companies House
  • Company Tax Return and accounts at the same time if they’re for the same accounting period

You’ll need your company’s annual accounts. They must be ‘balanced’, so your total assets should match what you owe. Unincorporated associations (like sports clubs) can upload a PDF of their accounts.

There’s a different process if you need to file your confirmation statement (annual return) with Companies House.

You do not need to pay for software to use this service. The service will automatically convert your accounts to the required format (iXBRL).

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Before you start

You’ll need your:

Other ways to file

You can only use the paper form (CT600) if either:

  • you’re unable to file online because you have a reasonable excuse
  • you want to file in Welsh

You must also fill in and post form WT1 to explain why you’ve used the paper form.