How to calculate your retirement corpus in India
The simplest way to estimate a retirement corpus is to start from your current annual expenses, grow them to your retirement age using your expected inflation, and multiply the result by 25 (for the 4% rule) or about 33 (for the 3% rule). The calculator above does exactly that and adds two things most rough calculators miss: a year-by-year corpus projection and an age-wise benchmark comparison.
Your current corpus is compounded at the chosen growth rate, and a realistic share of your salary is added each year as fresh savings. Salary growth slows as you age – 15% in your 20s, 12% in your 30s, then 6% and 4% – and savings-rate assumptions change too, matching how most Indian professionals actually behave through their career.