Guidance

Corporation Tax technical specifications: CT600 appendices

Appendices for Corporation Tax Online software developers.

Documents

Appendix C: Annual Investment Allowance version 3.4

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Details

Appendices for rates of tax, Marginal Rate Relief validation and Annual Investment Allowance.

Published 1 January 2014
Last updated 12 October 2015 + show all updates
  1. Appendix C of the Annual Investment Allowance has been updated with version 3.3.
  2. Appendix A: rates of tax version 2.5 has been published.
  3. Appendix A and Appendix B have been updated to include Corporation Tax rates/fractions from April 2015.
  4. Appendix C Annual Investment Allowance version 3.2 has been published.
  5. First published.