“8 Personal return (1) For the purpose of establishing the amounts in which a person is chargeable to income tax and capital gains tax for a year of assessment, and the amount payable by him by way of income tax for that year, he may be required by a notice given to him by an officer of the Board- (a) to make and deliver to the officer, a return containing such information as may reasonably be required in pursuance of the notice, and (b) to deliver with the return such accounts, statements and documents, relating to information contained in the return, as may reasonably be so required.”
“Paragraph 3 P is liable to a penalty under this paragraph of£100 . Paragraph 4 (1) P is liable to a penalty under this paragraph if (and only if)- (a) P's failure continues after the end of the period of 3 months beginning with the penalty date, (b) HMRC decide that such a penalty should be payable, and (c) HMRC give notice to P specifying the date from which the penalty is payable. (2) The penalty under this paragraph is£10 for each day that the failure continues during the period of 90 days beginning with the date specified in the notice given under sub-paragraph (1)(c).
“81. When considering a “reasonable excuse” defence, therefore, in our view the FTT can usefully approach matters in the following way: (1) First, establish what facts the taxpayer asserts give rise to a reasonable excuse (this may include the belief, acts or omissions of the taxpayer or any other person, the taxpayer’s own experience or relevant attributes, the situation of the taxpayer at any relevant time and any other relevant external facts). (2) Second, decide which of those facts are proven. (3) Third, decide whether, viewed objectively, those proven facts do indeed amount to an objectively reasonable excuse for the default and the time when that objectively reasonable excuse ceased. In doing so, it should take into account the experience and other relevant attributes of the taxpayer and the situation in which the taxpayer found himself at the relevant time or times. It might assist the FTT, in this context, to ask itself the question “was what the taxpayer did (or omitted to do or believed) objectively reasonable for this taxpayer in those circumstances? (4) Fourth, having decided when any reasonable excuse ceased, decide whether the taxpayer remedied the failure without unreasonable delay after that time (unless, exceptionally, the failure was remedied before the reasonable excuse ceased). In doing so, the FTT should again decide the matter objectively, but taking into account the experience and other relevant attributes of the taxpayer and the situation in which the taxpayer found himself at the relevant time or times.”