For many, withdrawing a big monthly sum from a retirement corpus is a dream. However, the withdrawal rate needs to be set so that your money lasts throughout your retirement. If you retire now with a retirement fund of Rs 1.5 crore , can you withdraw Rs 1 lakh every month for the next 20 years, and how much of your fund will still be there? Will it be possible to withdraw a higher amount or should you play it safe and target a lower amount, like Rs 75,000?