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Generating the iXBRL Computations File (2:54)

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We are very grateful to our clients for their comments and suggestions, without which these guides would not be possible. If you have a suggestion to improve this guide or its associated video, please email tracey@ftax.co.ukrule line

Generating the iXBRL Computations File

To create an iXBRL computations file using Ftax you must first complete the main CT600 tax return including the Profits worksheets and any relevent Capital Allowance worksheet:

Profits worksheet

 

Make sure you have entered your email address and the accounting period dates on the opening page, and the Company Number and Company Type on the first page of the tax return:

Front page details filled out

 

Company information

The Company Number should always be 8 digits. Add leading zeros if necessary.

 

 HMRC notes are available to help you choose the correct Company Type. You should also make sure you click the red Calculate Tax button on page 4:

Calculate tax button

 

To generate the file, go to the front page of the CT600 and click the iXBRL button at the bottom left of the page:

iXBRL computations button

 

Select 'iXBRL Computations' and click 'yes' to agree with the popups:

Agree to the pop-ups

 

After a few seconds a green success screen should appear:

Green success screen

 

Click the 'login' button on this screen, login to your Ftax Account on the Ftax website, scroll down to the 'Recent PDF Copies/iXBRL Files' section and click 'Download' to save the file in a known location:

Click download button

 

Please note that your Ftax Account home page will only keep copies of the latest versions of your iXBRL Accounts and Computations files.

If a red Error screen is displayed then check you have entered your email address and try again:

Submission error screen

 

If the problem persists then send in a Support Request and attach the saved CT600 to the support ticket:

Support ticket

 

It is extremely important to always handle iXBRL files with care. Never open an iXBRL file into a browser and then save it as this will corrupt the file.rule line

We are very grateful to our clients for their comments and suggestions, without which these guides would not be possible. If you have a suggestion to improve this guide or its associated video, please email tracey@ftax.co.uk

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