Cash Management and Custodian Account Client will need to make the full payment for the successful allotment on the first day of IPO before 3pm. If payment is not in account by then, full contract of the shares will be force sold. Margin Account and Financial Account After successful allotment, you do not need to pay the principal loan plus interest immediately. However, the margin ratio must be maintained above the respective required margin level. If you do not pay the principal loan plus interest and the margin ratio falls below the Maintenance Margin Ratio, there will be a Margin Call on you and top up will be required to fulfill the margin call within the stipulated period.