Tax deduction under section 80L: IDBI capital bonds specified as eligible for deduction under the income tax provision. Specification of eligibility under 80L designates the Industrial Development Bank of India's '3 Years--9 per cent. IDBI Capital Bonds' as qualifying instruments for the tax provision. The Central Government, exercising powers under clause (ii) of sub section (1) of section 80L of the Income tax Act, 1961, formally notifies these capital bonds as specified securities for the purpose of that clause.