Maximum leverage is the highest amount of borrowed funds that a trader can use to open a position in the market. It is expressed as a ratio, such as 1:30 or 1:500, and indicates the amount of money a trader can control with a certain amount of capital. For example, a leverage ratio of 1:100 means that for every $1 of capital, a trader can control $100 of assets in the market. While leverage can amplify potential profits, it also amplifies potential losses, and traders should use it with caution and employ proper risk management techniques.