The minimum amount for opening a MARS account is Rs 1 Lakh. However, investors can add more funds to their existing portfolio. The minimum investment for top-up is Rs 10,000. MARS is a direct plan offering, so there’s no need to open a separate trading account or demat account. An existing account can be used. \r\rFurther, MARS is more like an advisory tool for strategic asset allocation and scheme selection. Therefore, there is no specific restriction to sell the securities under MARS,;that is, no lock-in. Further, there are no extra charges associated with enrolling for MARS.