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Company Tax Return Filing With HMRC

Know All About CT600 Filing

For conversion of financial statements into iXBRL format and company tax returns filing with HMRC
All About CT600 Filing | Article Series Part 1

What is company tax return

A company tax return is a form filed with a tax authority on which a taxpayer states their income, expenses, and other tax information.

CT600 Form is a Company Tax return and details the Corporation Tax payable to HMRC. It consists of a completed CT600 form plus information, accounts, computations, statements and reports which the company has furnished.

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All About CT600 Filing | Article Series Part 2

Who should submit company tax returns with HMRC

In the UK, you will have to file company tax return annually, if you are registered as:

  • a limited company
  • any foreign company with a UK branch or office

Groups of individuals carrying out a business (such as co-operatives or associations) may also need to file the company tax returns even if they are not incorporated but starts trading

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All About CT600 Filing | Article Series Part 3

What are the CT600 filing requirements

The online Company Tax Return pack filed through the Government Gateway will need to consist of the following attachments:

  • Corporate Tax Return forms (Form CT600) in XML;
  • Corporation Tax computation in iXBRL;
  • Statutory annual accounts of the legal entity in iXBRL (using right taxonomy);
  • Other supporting schedules in pdf.

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All About CT600 Filing | Article Series Part 4

By when should you file company tax returns with HMRC

There is no universal deadline to file a company tax return. The date is unique to each company depending on the accounting period.The deadline to submit iXBRL accounts as a part of company tax returns is 12 months after the end of the accounting period it covers.

Corporation tax is usually charged for accounting periods for one year, except for the periods when a company starts and ceases, or if there is a change of accounting date.

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All About CT600 Filing | Article Series Part 5

How to complete CT600

As the process is complex and detailed and also involves converting financial statements to iXBRL format, most companies prefer to outsource this job to a professional service provider like FinTags. We offer one-stop-shop solution in

  • converting your financial statements to iXBRL format,
  • calculating and preparing your tax computations in iXBRL format,
  • completing Form CT600 and
  • filing the company tax returns with HMRC

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Disclaimer : For your benefit we have collated relevant information related to regulatory reporting. Although we try our best to ensure the accuracy of the information on this website, you rely on it at your own risk. The information is provided as a guide only and is not professional advice including legal advice. You should obtain specific professional advice before taking action.

iXBRL and CT600 Filing Price

How Much It Costs

The pricing shown is for 7 days turnaround time. Please check our pricing section for more options

iXBRL Tagging

of financial statements


for documents up to 5 pages


for every additional page

iXBRL Tagging

of tax computations


for documents up to 5 pages


for every additional page

CT600 Filing

with HMRC


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