In the cases to which Paragraph A of Part I of the First Schedule applies, where the assessee has, in the previous year, any net agricultural income exceeding five thousand rupees, in addition to total income, and the total income exceeds one lakh rupees, then,—
(a) the net agricultural income shall be taken into account, in the manner provided in clause (b) [that is to say, as if the net agricultural income were comprised in the total income after the first one lakh rupees of the total income but without being liable to tax], only for the purpose of charging income-tax in respect of the total income; and
(b) the income-tax chargeable shall be calculated as follows:—
(i) the total income and the net agricultural income shall be aggregated and the amount of income-tax shall be determined in respect of the aggregate income at the rates specified in the said Paragraph A, as if such aggregate income were the total income;
(ii) the net agricultural income shall be increased by a sum of one lakh rupees, and the amount of income-tax shall be determined in respect of the net agricultural income as so increased at the rates specified in the said Paragraph A, as if the net agricultural income as so increased were the total income;
(iii) the amount of income-tax determined in accordance with sub-clause (i) shall be reduced by the amount of income-tax determined in accordance with sub-clause (ii) and the sum so arrived at shall be the income-tax in respect of the total income:
Provided that in the case of every woman, resident in India and below the age of sixty-five years at any time during the previous year, referred to in item (II) of Paragraph A of Part I of the First Schedule, the provisions of this sub-section shall have effect as if for the words “one lakh rupees”, the words “one lakh thirty-five thousand rupees” had been substituted :
Provided further that in the case of every individual, being a resident in India, who is of the age of sixty-five years or more at any time during the previous year, referred to in item (III) of Paragraph A of Part I of the First Schedule, the provisions of this sub-section shall have effect as if for the words “one lakh rupees”, the words “one lakh eighty-five thousand rupees” had been substituted :
Provided also that the amount of income-tax so arrived at, as reduced by the amount of rebate of income-tax calculated under Chapter VIII-A of the Income-tax Act, shall be increased by a surcharge for purposes of the Union calculated in each case in the manner provided in that Paragraph and the sum so arrived at shall be the income-tax in respect of the total income