Deductions in respect of profits and gains from industrial undertakings or enterprises engaged in infrastructure development, etc.80-IA. (1) Where the gross total income of an assessee includes any profits and gains derived by an undertaking or an enterprise from any business referred to in sub-section (4) (such business being hereinafter referred to as the eligible business), there shall, in accordance with and subject to the provisions of this section, be allowed, in computing the total income of the assessee, a deduction of an amount equal to hundred per cent of the profits and gains derived from such business for ten consecutive assessment years.(2) The deduction specified in sub-section (1) may, at the option of the assessee, be claimed by him for any ten consecutive assessment years out of fifteen years beginning from the year in which the undertaking or the enterprise develops and begins to operate any infrastructure facility or starts providing telecommunication service or develops an industrial park or develops a special economic zone referred to in clause (
iii) of sub-section (4) or generates power or commences transmission or distribution of power or undertakes substantial renovation and modernisation of the existing transmission or distribution lines :
Provided that where the assessee develops or operates and maintains or develops, operates and maintains any infrastructure facility referred to in clause (
a) or clause (
b) or clause (
c) of the
Explanation to clause (
i) of sub-section (4), the provisions of this sub-section shall have effect as if for the words "fifteen years", the words "twenty years" had been substituted.(2A) Notwithstanding anything contained in sub-section (1) or sub-section (2), the deduction in computing the total income of an undertaking providing telecommunication services, specified in clause (
ii)
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