How to generate and submit an Electronic CT600 with iXBRL Accounts

Introduction

This topic explains how to generate and submit a CT600 return online, with iXBRL Accounts.

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Introduction

Register as an Agent

Entering the User ID and Password

Step 1 - Attaching Accounts

Step 2 - Generating the Electronic Tax Return in IRIS Business Tax

Step 3 - Transmitting the Return

Appendix

 


 

Register as an Agent

Practices may register for Online Services at www.hmrc.gov.uk. Your Agent Reference should be available from your local tax office.

 

Entering the User ID and Password

  1. Log in to IRIS Business Tax as the MASTER user and select the client.

  2. From the top toolbar select Setup | Practice Options

  3. Click Tax Options.


  4. Click the Corp. Tax tab and enter your Agent reference, User id, Password and Return E-mail address.

  1. Click OK.

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Step 1 - Attaching Accounts

Accounts must be attached unless the user has indicated otherwise, giving a reason on the Data Entry | Summary screen, in IRIS Business Tax.

 

A PDF copy of the accounts can be submitted with the return instead of iXBRL accounts in any of the following circumstances:

 

Saving the iXBRL Accounts file from IRIS Accounts Production

To save the iXBRL Account file from IRIS Accounts Production:

  1. From the menu bar select Reports | iXBRL and CH E-File.

  2. Select the appropriate Financial Statements, for example,select LTD from the Report/Document filed and click OK.

  1. Within the Tag Editor screen click the iXBRL Finalise icon.

  1. Upon successful validation, click the Create HMRC Copy icon


  2. You are now prompted to select the location to save the HMRC copy of the iXBRL accounts file.



    Save file in IRIS – this allows the iXBRL account file to be automatically attached when generating the Electronic CT600 in IRIS Business Tax.
    Save externally – this allows the iXBRL accounts file to be saved in a specific folder.

  3. Click OK.

 

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Step 2 - Generating the Electronic Tax Return in IRIS Business Tax

  1. In IRIS Business Tax, select the Limited Company Client.

  2. From the Reports menu select Electronic Tax Return.

The following screen displays.

 

Period details

  1. Select the Corporation Tax Accounting Period to which the return relates. If there are multiple Corporation Tax Accounting Periods (CTAPs) a return for each CTAP may be required.

Electronic return status

  1. Select Live or Test. Where test is selected this will be indicated on the Transmit Internet Return screen.

New / amended return indicator

  1. The default setting is New. In order to submit an amended CT600, select Amended.

Attach accounts

  1. Use one of the following options to locate the accounts:
  1. Select one of the following options to locate the corporation tax computation:

When attaching an iXBRL tax computation for a long Corporation Tax Account Period (CTAP), due to cross checking of the iXBRL document and the CT600, the accounting period that the computation relates to must match that shown on the CT600.

In the situation where there is a long CTAP, IRIS Business Tax assumes that the computation will be attached to the 1st CTAP submitted. When dealing with a long CTAP there are several options available to attach the computation:

Optional attachments

Use this section if you want to submit additional PDF documents to HMRC, such as a letter or additional calculations.

  1. Click OK to continue.

Corporation Tax Report Output

If the Generate now option was selected in the Attach computation section, when clicking OK to the Electronic Tax Return Options screen the following screen displays:

 

Report destination

  1. Once all relevant options for the computation output have been selected, click OK.

IRIS Practice Management users will be prompted to log the report.

  1. Review the computation report as required and click Close.

    The CT600 Return will now be validated:

If there are no validation errors, the Internet Filing CT600 Report Output screen shown below will generate:

  1. Once the relevant options for the Internet Filing CT600 Report Output have been selected, click OK.

  1. Review the CT600 Return as required and click Close.

  1. Click OK.

 

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Step 3 - Transmitting the Return

  1. From the Reports menu select Transmit Internet Return.

    The Transmit Internet Return screen displays.

  1. Highlight the Return to be transmitted and click Transmit.

    The following screen displays:


  1. Once the return has been submitted, Cancel will change to Close. Click Close.

The following message displays.


If the return is rejected the following message displays. Click Yes to view/print details about the validation error(s) that have caused the return to be rejected.

 

The Transmit Internet Return screen will update the Status column for the transmitted return(s).

  1. Click Close to exit from the Transmit Internet Return screen.

 

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Appendix

Transmit Internet Return Screen – References

Information on the transmission screen can be sorted by clicking on one of the column headings.

Status Meaning

Column Filters

Use the column filters to filter the number of returns shown on the screen. The columns can be filtered to allow more specific returns to be shown on screen instead of all returns. The following filters can be applied in the transmit internet return screen:

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