100. Safe harbour for income attribution in case of income from business and profession.—

(1) The income-tax authorities shall accept the option for safe harbour exercised by an eligible assessee in any relevant tax year under rule 101, where the income declared by such assessee from an eligible business is in accordance with the circumstances as specified under sub-rule (2), unless such safe harbour is declared invalid under the provisions of rule 101(3).

(2) In respect of the eligible business mentioned in column B of the following Table, the circumstances referred to in sub-rule (1) shall be as specified in column C thereof:

Table

(3) Where the eligible assessee has exercised the option for safe harbour under rule 101 in respect of the eligible business in any relevant tax year and such option is not declared invalid under the said rule,—

(a) any deduction allowable under the provisions of sections 28 to 34, 44 to 49, 51, 52, Schedule IX and Schedule X shall be deemed to have been already given full effect to and no further deduction under those sections or Schedules shall be allowed;

(b) the written down value of any asset of such business shall be deemed to have been calculated as if the eligible assessee had claimed and had been actually allowed the deduction in respect of the depreciation for such tax year;

(c) no set off of unabsorbed depreciation under section 33(11) or carried forward loss under section 112(1) shall be allowed to such assessee; and

(d) no set off of loss from other business under section 108(1) or other head under section 109 shall be allowed to such assessee for income chargeable to tax under the head ?Profits and gains of business or profession? in respect of such business.

(4) The provisions of sections 171 and 172 shall apply in respect of an international transaction or specified domestic transaction, if the eligible assessee enters into such transaction while carrying on the eligible business.

(5) For the purposes of this rule, the expressions, ?international transaction? and ?specified domestic transaction shall have the meanings respectively assigned to them in sections 163 and 164.