Form

Corporation Tax: Company Tax Return (CT600 (2017) Version 3)

Use form CT600 (2017) Version 3 to file a Company Tax Return for accounting periods starting on or after 1 April 2015.

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Details

Use form CT600 (2017) Version 3 for any accounting periods starting on or after 1 April 2015. Refer to the CT600 guide (2017) Version 3 for help and a full list of companies that should use this form.

Check if you need to submit this form before downloading and sending it in the post.

Find out more about who must submit an online Company Tax Return.

Supplementary pages

CT600A (2015) Version 3: close company loans and arrangements to confer benefits on participators

CT600B (2015) Version 3: controlled foreign companies and foreign permanent establishment exemptions

CT600C (2017) Version 3: group and consortium relief

CT600D (2015) Version 3: insurance

CT600E (2015) Version 3: Charities and Community Amateur Sport Clubs (CASCs)

CT600F (2015) Version 3: Tonnage Tax

CT600H (2015) Version 3: cross-border Royalties

CT600I (2015) Version 3: supplementary charge in respect of ring fence trades

CT600J (2015) Version 3: disclosure of tax avoidance schemes

CT600K (2017) Version 3: Restitution Tax

Use the Company Tax Return guide (CT600 Guide (2017) Version 3) to help you complete form CT600 (2017) Company Tax Return.

Use the Budget changes (CT600 Budget Insert) for an overview of the main Budget changes affecting Corporation Tax.

Use form 64-8: authorise your agent to authorise HM Revenue and Customs to communicate with an accountant, tax agent or adviser acting on your behalf.

Published 7 April 2015
Last updated 12 December 2017 + full page history
  1. English version of the October 2017 Company Tax Return (CT600 version 3) has been added.
  2. The Company Tax Return (CT600 version 3) has been updated to incorporate the reform of Corporation Tax loss relief.
  3. New version Corporation Tax: Company Tax Return (CT600 (2017) Version 3) has been added.
  4. First published.