Change of https://www.gov.uk/government/publications/corporation-tax-technical-specifications-xbrl-and-ixbrl

Change description : 2025-05-02 11:11:00: The ‘Generic dimension validations’ and ‘Joint filing validation checks’ documents have been updated to include items for 2025. [Guidance and regulation]

Showing diff : 2024-04-23 23:01:19.328062521 +00:00..2025-05-02 10:11:47.835648859 +00:00

Guidance

Corporation Tax technical specifications in XBRL and iXBRL format

Find guidance on how to create iXBRL accounts and computations if you are a Corporation Tax software developer.

Update history

2025-11-20 10:08
The ‘CT Computations Format’ document has been updated to remove details of the implementation date and to add a Change Log. The ‘CT Computations Format (supplementary)’ document has been removed.

2025-07-01 10:25
The ‘CT Computations Format’ and ‘CT Computations Format (supplementary)’ documents have been added.

2025-05-02 11:11
The ‘Generic dimension validations’ and ‘Joint filing validation checks’ documents have been updated to include items for 2025.

2024-04-24 00:01
The ‘Generic dimension validations’ and ‘Joint filing validation checks’ documents have been updated to include items for 2024.

2024-02-15 16:36
The Generic dimension validations document has been updated to include details of some incorrectly removed tags.

2023-07-06 15:09
The generic dimension validations file has been updated to include items for the years 2021, 2022 and 2023.

2023-05-22 09:36
Section ‘3312 – Mandatory Items – FRC Taxonomies’ in Joint filing validation checks has been updated to include items for the years 2021, 2022 and 2023.