Their duties include bringing the buyer and seller of foreign exchange and conversion between the two operations. During his brokerage brokerage firms charge a brokerage commission. At Forex there is no commission, usually a percentage of the transaction amount or a certain predetermined amount. Generally, dealers of broker companies traded currency with a spread, which had already laid their commission. Brokerage firm, has requested information on courses, a place where a real exchange rate is already on the transaction. Commercial banks are informed about the current level of satisfaction from the brokerage firms. Among brokerage firms in the international currency markets, best known for such as Lasser Marshall, Harlow Butler, Tullett and Tokio, Coutts, Tradition, and others.