The key to reaching the goal of becoming a Crorepati is to start early. So, start your SIP today. The early you start the more you benefit. If you are 20 years old and you want to accumulate Rs 1 crore by the time you become 60, you just have to invest Rs 1,581 per month to accumulate this amount. For calculating this, we have assumed a return of 10 per cent per annum.