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IHT400 - Inheritance Tax account

Last EFIS release: 30/2026 (May 2026)

Form status: New/Amended

HM Revenue and Customs have updated the listed forms which are now available for immediate use. In addition, the newly released IHT437 has been added to the library for immediate use.

Further information on the IHT400(all) update to follow in due course.

For details of field amendments please go to: support.oyezforms.co.uk/fieldchanges

All EFIS releases

EFIS 30 - 2026 May 2026  New/Amended
EFIS 8 - 2026 February 2026  New/Amended
EFIS 55 - 2025 June 2025  New/Amended
EFIS 3 - 2025 January 2025  New/Amended
EFIS 15 - 2024 March 2024  New/Amended
EFIS 21 - 2023 April 2023  New/Amended
EFIS 82 - 2022 December 2022  New/Amended
EFIS 76 - 2020 December 2020  New/Amended
EFIS 37 - 2020 July 2020  New/Amended
EFIS 7 - 2020 February 2020  New/Amended
EFIS 52 - 2018 May 2018  New/Amended
EFIS 64 - 2017 June 2017  New/Amended
EFIS 32 - 2017 April 2017  New/Amended
EFIS 18 - 2016 February 2016  New/Amended
EFIS 98 - 2015 November 2015  New/Amended
EFIS 103 - 2014 November 2014  New/Amended
EFIS 11 - 2014 February 2014  New/Amended
EFIS 91 - 2013 November 2013  New/Amended
EFIS 77 - 2012 November 2012  New/Amended
EFIS 73 - 2012 November 2012  New/Amended
EFIS 84 - 2011 November 2011  New/Amended
EFIS 65 - 2010 October 2010  New/Amended
EFIS 39 - 2010 June 2010  New/Amended
EFIS 23 - 2009 April 2009  New/Amended
EFIS 11 - 2009 March 2009  New/Amended
EFIS 5 - 2009 January 2009  New/Amended
EFIS 2 - 2009 January 2009  New/Amended
EFIS 61 - 2008 November 2008  New/Amended