Margin

Banks and/or online trading providers need collateral to ensure that the investor can pay in case of a loss. The collateral is called the margin and is also known as minimum security in Forex markets. In practice, it is a deposit to the trader's account that is intended to cover any currency trading losses in the future.

Margin enables private investors to trade in markets that have high minimum units of trading by allowing traders to hold a much larger position than their account value. Margin trading also enhances the rate of profit, but can also enhance the rate of loss if the investor makes the wrong decision.