Who has become familiar to forex market has probably heard about “broker” or maybe his operations have been done through this person or company.The Broker in forex (trader), can be a person or a company. The broker function at forex market is to act as an intermediary between the buyer and the seller receiving a commission for the service given. The forex broker must be an authorized person and needs a licence for doing his activity, commonly these people or companies are temporal agents that do not remain in time.The broker in forex can also be called an agent that makes the market be dynamic, these through their activity make operations be done, on the contrary without broker´s task foreign currency market will be almost stopped. Another characteristic that broker has is that he has not his own position, he is the the client´s voice in the market.The forex broker assessors about what can happen but he will never take a decision if it is not supported by the investor.