Intimation of loss.
157. When, in the course of the assessment of the total income of any
assessee, it is established that a loss has taken place which the assessee is entitled
to have carried forward and set off under the provisions of sub-section (1) of section 72, sub-section (2) of section
73, 65[sub-section (1) 66[or sub-section (3)] of section 74 or
sub-section (3) of section 74A], the 67[Assessing] Officer shall notify to the
assessee by an order in writing the amount of the loss as computed by him for
the purposes of sub-section (1) of section 72,
sub-section (2) of section 73, 68[sub-section (1) 69[or sub-section (3)] of section
74 or sub-section (3) of section 74A].