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HMRC is changing the CT600 form for Corporation Tax Accounting Periods (CTAPs) beginning 01/04/15 onwards.
This topic gives a general overview of the changes.
The message below displays when generating the CT600 for periods beginning from 01/04/15, indicating that the form is subject to change. It will not be possible to file electronically through IRIS until 01/04/15 when HMRC have updated their systems.
Data Entry screens in Business Tax will update to show the new box numbers
when generating the new CT600 return.
Below is the Income screen before and after CTAPs beginning 01/04/15 showing the change in box numbers on the CT600 return. This screen can be found within Data Entry | Calculation | Income
Below is the Tax Calculation screen from the CT600 v2 (current version). This screen can be accessed by selecting Data Entry | Calculation | Tax Calculation
Below is the Tax Calculation screen from the CT600 v3 (new version). This screen can be accessed by selecting Data Entry | Calculation | Tax Calculation
When changing from the old return to the new, most of the figures will be mapped correctly to the corresponding boxes, although some boxes have been removed from the old return and therefore will not be mapped across.
These will need to be manually entered.