# Income Tax (Earnings and Pensions) Act 2003, Paragraph 53

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

(1) For the purposes of this Part and Part 7 a person (“P”) is not to be regarded as having failed to do anything required to be done within a particular period of time if—
(a) P had a reasonable excuse for not doing it within that period, and
(b) if the excuse ceased to exist, P did it without unreasonable delay after the excuse ceased to exist.
(2) Where sub-paragraph (1)(b) applies, any further time limit running from the end of the period concerned is instead to run from the time when the thing in question was actually done.
(3) For the purposes of sub-paragraph (1)—
(a) an insufficiency of funds is not a reasonable excuse, unless attributable to events outside P's control, and
(b) where P relies on any other person to do anything, that is not a reasonable excuse unless P took reasonable care to avoid the failure.

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Source: https://www.legislation.gov.uk/ukpga/2003/1/schedule/5/paragraph/53 (the official version)
Page: https://openlegislation.uk/income-tax-earnings-and-pensions-act-2003/schedule-5/paragraph-53
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.