Ever thought about starting an SIP in mutual funds to save for retirement? It is important to stop for a moment and consider if the amount you are investing will be enough for even the everyday needs when you hang up your boots. It is best to start from first principles and estimate what is the cost of living during retirement and work backwards to come up with a realistic assessment of how much money you should save just to maintain your current lifestyle and keep up with inflation. This calculator is a start in that direction.