Published 7 April 2015
Last updated 1 April 2022
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1 April 2022
Corporation Tax: research and development (CT600L (2022) version 3) has been added.
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1 April 2021
Corporation Tax: research and development (CT600L (2021) version 3) has been added.
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1 April 2021
The Corporation Tax for Company Tax Return (CT600 (2021) Version 3) has been added.
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1 April 2020
English and Welsh versions of the Corporation Tax for Company Tax Return (CT600 (2020) Version 3) have been updated.
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5 August 2019
Welsh version of Corporation Tax for Company Tax Return (CT600 (2019) Version 3) has been updated.
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6 April 2019
English and Welsh versions of Corporation Tax: Company Tax Return (CT600 (2019) Version 3) have been added.
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6 April 2018
Corporation Tax: Company Tax Return (CT600 (2018) Version 3) has been added.
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12 December 2017
English version of the October 2017 Company Tax Return (CT600 version 3) has been added.
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11 December 2017
The Company Tax Return (CT600 version 3) has been updated to incorporate the reform of Corporation Tax loss relief.
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7 April 2017
New version Corporation Tax: Company Tax Return (CT600 (2017) Version 3) has been added.
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7 April 2015
First published.
