# Finance (No. 2) Act 2023, Paragraph 29

Extent: E+W+S+N.I.

(1) The general rule is that no discovery assessment may be made more than 4 years after the end of the accounting period to which it relates.
(2) A discovery assessment in a case involving a loss of tax brought about carelessly by a member of the group (or a person acting on their behalf) may be made at any time not more than 6 years after the end of the accounting period to which it relates.
(3) A discovery assessment in a case involving a loss of tax brought about deliberately by a member of the group (or a person acting on their behalf) may be made at any time not more than 20 years after the end of the accounting period to which it relates.
(4) A discovery assessment in a case involving a loss of tax brought about as a result of a failure of a filing member to register with HMRC under paragraph 6 may be made at any time not more than 20 years after the end of the accounting period to which it relates.

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Source: https://www.legislation.gov.uk/ukpga/2023/30/schedule/14/paragraph/29 (the official version)
Page: https://openlegislation.uk/finance-no-2-act-2023/schedule-14/paragraph-29
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.