Maintenance Margin is the minimum amount of equity that must be maintained in a margin account in order to keep the account open and avoid a margin call. It is usually set at a percentage of the total value of the securities held in the account.

Maintenance Margin is a term used in the financial industry to refer to the minimum amount of equity that must be maintained in a margin account in order to keep the account open and in good standing. This amount is set by the broker and is typically a percentage of the total value of the account.
Maintenance Margin is important because it helps to protect the broker from losses due to the customer’s trading activities. If the customer’s account falls below the maintenance margin, the broker may issue a margin call, which requires the customer to deposit additional funds into the account in order to bring it back up to the required level. If the customer fails to do so, the broker may liquidate some or all of the customer’s positions in order to protect itself from further losses.
Maintenance Margin is also important for the customer because it helps to ensure that the customer does not take on too much risk. By maintaining a certain level of equity in the account, the customer can ensure that they do not overextend themselves and risk losing more money than they can afford to lose.
In addition to the maintenance margin, brokers may also require customers to maintain a minimum account balance. This is typically a lower amount than the maintenance margin and is designed to ensure that the customer has enough funds in the account to cover any trading losses that may occur.
Overall, Maintenance Margin is an important concept in the financial industry and is designed to protect both the broker and the customer from losses due to trading activities. By understanding the concept and maintaining the required levels of equity in their accounts, customers can help to ensure that their trading activities are conducted in a safe and responsible manner.