Corporation Tax technical specifications: CT600 appendices
- HM Revenue & Customs
- Part of:
- Corporation Tax Online: support for software developers and Corporation Tax
- 1 January 2014
- Last updated:
- 12 October 2015, see all updates
Appendices for Corporation Tax Online software developers.
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Appendices for rates of tax, Marginal Rate Relief validation and Annual Investment Allowance.
Published: 1 January 2014
Updated: 12 October 2015
- Appendix C of the Annual Investment Allowance has been updated with version 3.3.
- Appendix A: rates of tax version 2.5 has been published.
- Appendix A and Appendix B have been updated to include Corporation Tax rates/fractions from April 2015.
- Appendix C Annual Investment Allowance version 3.2 has been published.
- First published.