In forex, investors use leverage to profit from the fluctuations in exchange rates between two different countries. The leverage that is achievable in the forex market is one of the highest that investors can obtain. Leverage is a loan that is provided to an investor by the broker that is handling his or her forex account. When an investor decides to invest in the forex market, he or she must first open up a margin account with a broker. Usually, the amount of leverage provided is either 50:1, 100:1 or 200:1, depending on the broker and the size of the position the investor is trading