“44. Ms Murray submits that the failure of the notice of assessment to state the period is not saved by section 114(1) because the notice did not state any period at all. In my view, that is not a sufficient answer to the section 114(1) argument. Section 114(1) is expressed in wide terms. It captures a notice "affected by reason of a mistake, defect or omission therein" (emphasis added). Thus, the mere fact that the notice omitted to state the period cannot be determinative. An omission to state the period is saved by section 114(1) if the notice is "in substance and effect in conformity with or according to the intent and meaning of the Taxes Acts". In Pipe v Revenue and Customs Commissioners[2008] STC 1911 at para 51, Henderson J said that a mistake may be too fundamental or gross to fall within the scope of the subsection. I agree. The same applies to omissions. “45 In my view, the failure to state the period in the notice of assessment in the present case falls within the scope of section 114(1). Although the period was not stated, it could be worked out without difficulty. The notice identified the tax year as 2010-11. Mr Donaldson had been told that, if he filed a paper return (as he did), the filing date was31 October 2011 . The SA Reminder document informed him that, since he had not filed his return by the filing date, he had incurred a penalty of£100 . It also informed him that, if he did not file his return by31 January 2012 , he would be charged a£10 daily penalty for every day the return was outstanding. This information was reflected in the notice of assessment. Mr Donaldson could have been in no doubt as to the period over which he had incurred a liability for daily penalty. He knew that the start date for the period of daily penalty was1 February 2012 and the notice of assessment told him that the end date of the period was 90 days later. The omission of the period from the notice was, therefore, one of form and not substance. Mr Donalson was not misled or confused by the omission. The effect of section 114(1) is that the omission does not affect the validity of the notice.”