(1) If the Deputy Commissioner is satisfied without requiring the presence of the assessee or production by him of any evidence that a return made under section 14 or section 15 is correct and complete, he shall assess the net wealth of the assessee and determine the amount of tax payable by him or the amount refundable to him on the basis of such return.
(2) If the Deputy Commissioner is not so satisfied, he shall serve a notice on the assessee either to attend in person at his office on a date to be specified in the notice or to produce or cause to be produced on that date any evidence on which the assessee may rely in support of his return.
(3) The Deputy Commissioner, after hearing such evidence as the person may produce and such other evidence as he may require on any specified points, and after taking into account all relevant materials which Deputy Commissioner has gathered, shall by order in writing, assess the net wealth of the assessee and determine the amount payable by him as tax or the amount refundable to him.
(4) For the purpose of making an assessment under this Act, the Deputy Commissioner may serve on any person who has made a return under sub-section (1) of section 14 or upon whom a notice has been served under sub-section (2) of that section, or who has made a return under section 15, a notice requiring him to produce or cause to the produced on a date specified in the notice such accounts, records or other documents as the Deputy Commissioner may require.
(5) If any person fails to make a return in response to any notice under sub-section (2) of section 14, or fails to comply with the terms of any notice issued under sub-section (2) or sub-section (4), the Deputy Commissioner, after taking into account all relevant material which he has gathered, shall make the assessment to the best of his judgement and determine the amount payable by the person as wealth-tax or the amount refundable to him on the basis of such assessment.