Rahul dreams of retiring early at age 50 and needs to determine how to save and invest enough to achieve a retirement corpus of Rs. 3,00,00,000. There is a two step method - first ascertain the corpus required considering inflation, and second determine how much to save and invest each month starting early to take advantage of compounding returns. An analysis shows Rahul would need to invest Rs. 1,64,952 annually or Rs. 11,128 monthly to reach his goal if earning 14% annually on his investments.