This document summarizes income tax in India. It discusses tax liability calculation using examples of 5 individuals with varying gross incomes. It also outlines the major tax deductions available under sections 80C, 80D, and 80G of the Income Tax Act. These include deductions for investments, health insurance premiums, and donations. The maximum deduction amounts are Rs. 1.5 lakh under 80C, Rs. 25,000 under 80D, and 50-100% of donations under 80G. In conclusion, the author feels the old tax regime is better than the new regime despite the new one.