Company Tax returns have to be filed with the iXBRL data standard using either HMRC’s own software or third-party commercial software. Businesses that use third-party commercial software should refer to the HMRC list of recognised commercial software.

The list has recently been updated and presents the details of approved suppliers in two main categories:

  1. Software applications that produce and submit a CT600 with PDF.
  2. Software applications or services that produce iXBRL Accounts and/or iXBRL Computations. This list is divided into three sub-categories.

Online Corporation Tax filing is compulsory for company tax returns. HMRC does not make any specific recommendation or endorsement for any of the software companies listed and does not provide support for commercial software.

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