Section 73A of the Income Tax Act: Carry forward and set off of losses by specified business
(1) Any loss, computed in respect of any specified business referred to in section 35AD shall not be set off except against profits and gains, if any, of any other specified business.
(2) Where for any assessment year any loss computed in respect of the specified business referred to in sub-section (1) has not been wholly set off under sub-section (1), so much of the loss as is not so set off or the whole loss where the assessee has no income from any other specified business, shall, subject to the other provisions of this Chapter, be carried forward to the following assessment year, and—
(i) it shall be set off against the profits and gains, if any, of any specified business carried on by him assessable for that assessment year; and
(ii) if the loss cannot be wholly so set off, the amount of loss not so set off shall be carried forward to the following assessment year and so on.