Deduction for certain incomes: Section 80L granted limited deductions for interest and dividends but has been omitted. Section 80L formerly provided a statutory deduction for specified incomes such as interest on defined securities and deposits and certain dividends, subject to an aggregate ceiling with full allowance below the threshold and a fixed deduction otherwise; it included eligibility tied to the paying institution or instrument, provisos for additional relief where amounts remained unallowed, and a rule precluding duplicate deductions for partners or members where income derived from assets held by firms or associations, but the section has since been omitted.