# Finance Act 2026, Paragraph 18: Assessment of penalties

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

(1) An officer of Revenue and Customs may assess a penalty under any of paragraphs 7 to 13 and set it at such amount as, in the opinion of the officer, is appropriate.
(2) Notice of an assessment of a penalty under this paragraph must—
(a) be given to the person liable to the penalty, and
(b) state the date on which it is issued and the time within which an appeal against the assessment may be made.
(3) Subject to sub-paragraph (4), after a notice of assessment of a penalty under this paragraph has been given, the assessment must not be altered except on appeal.
(4) If it is discovered by an officer of Revenue and Customs that the amount of a penalty under paragraph 7(b), 10(b) or 12(b) which has been assessed under this paragraph is or has become insufficient, the officer may make an assessment in a further amount so that the penalty is set at the amount which, in the opinion of that officer, is appropriate.

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Source: https://www.legislation.gov.uk/ukpga/2026/11/schedule/23/paragraph/18 (the official version)
Page: https://openlegislation.uk/finance-act-2026/schedule-23/paragraph-18
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.