Every January to March, millions of Indian IT employees scramble to submit investment proofs to HR. Most end up making last-minute decisions — buying LIC policies they do not need or dumping money into FDs that barely beat inflation — just to show something on paper. This guide is what you should read in April, not March: a complete map of every legitimate deduction available to salaried employees, how much each one saves, and exactly which ones to use based on your salary bracket.