“(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, on or before the day mentioned in subsection (1A) below, 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. (1A) The day referred to in subsection (1) above is- (a) The 31 st January next following the year of assessment, or (b) Where the notice under this section is given after 31 st October next following the year, the last day of the period of three months beginning with the day on which the notice was given……. …….(1D) A return under this section for a year of assessment (Year 1) must be delivered- (a) In the case of a non-electronic return, on or before 31 st October in Year 2, and (b) In the case of an electronic return, on or before 31 January in Year 2.”