There are a couple of other deductions worth exploring.
Gross total Income is the total of income under all heads for a particular previous year. Out of the said Gross total Income, deductions are allowed under various sections comprised in chapter VI-A. To claim the said deductions, certain conditions have to be fulfilled.
80CCC - Contribution to Pension Fund of LIC
80D - Medical Insurance premia
80DD - Maintenance including medical treatment of handicapped dependent
80DDB - Medical treatment, etc.
80-E - Repayment of loan taken for higher education
80G - Certain Donations to Charitable trusts of institutions for charitable purpose.
80GG - Rent Paid by an Assessee
80GGA - Donations for scientific research or rural or urban development
80-HH - Deduction in respect of profits and gains from newly established industrial undertakings or hotel in backward areas.
80-HHA - Deduction in respect of profits and gains from newly established small scale industrial undertakings in certain areas.
80-HHB - Deduction in respect of profits and gains from projects outside India.
80-HHBA - Deduction in respect of profits and gains from housing projects in certain areas.
80-HHC - Deduction in respect of profits and gains from export of goods outside India.
80-HHD - Deduction in respect of earning in foreign exchange
80-HHE - Deduction in respect of profit from export of computer software, etc.
80-HHF - Deduction in respect of profit from export or transfer of film software, etc.
80-IA - Deduction in respect of profit and gains of certain industrial undertakings or enterprises, etc.
80-IB - Deduction in respect of profit and gains of certain industrial undertakings other than infrastructure development undertakings, etc.
80-JJA - Profits and gains from business of collecting and processing biodegradable waste.
80-JJAA - Deduction in respect of employment of new workmen.
80-L - Interest on securities, dividends, etc.
80 O - Royalties, commissions, fees for professional services etc, earned in convertible foreign exchange
80-P - Certain income of Co-operative Societies
80-R, 80-RR and 80-RRA - Income from foreign sources.
80-U - Income of handicapped Assessee.