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Corporation Tax: supplementary charge in respect of ring fence trades (CT600I)

Use supplementary pages CT600I if your company carried on a ring fence trade.

From:
HM Revenue & Customs
Published
7 April 2015
Last updated
1 April 2025 — See all updates

Documents

CT600I: supplementary charge in respect of ring fence trades

PDF, 372 KB, 3 pages

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Details

Before you download the form and send it in the post, check when you need to send an online Company Tax Return.

Use these supplementary pages if your company carried on a ‘ring fence trade’ (generally, oil extraction or exploitation of rights in the UK or UK Continental Shelf).

Use form CT600 to file a Company Tax Return by post if you cannot file it online.

Read the Autumn Statement 2024 — overview of tax legislation and rates (OOTLAR) for an overview of the main Budget changes affecting Corporation Tax.

Use the CT600I guidance to help you complete the CT600I supplementary page form.

Updates to this page

Published 7 April 2015
Last updated 1 April 2025 show all updates

  1. Link to the form CT600 and Autumn Statement has been updated.

  2. A link to the CT600I guidance has been added.

  3. The related forms and guidance have been updated for 2023.

  4. The related forms and guidance have been updated for 2022.

  5. English and Welsh versions of form (CT600I (2019) version 3) have been added.

  6. Welsh version of form CT600I (2015) version 3 has been added.

  7. First published.

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