Forex brokers are not particularly tricky in their activities: they work at stable quotes. They do not change prices, but transfer them to the Forex market as they were set by the trader. The only source of income for such a dealing company is commission fees that are consistently charged for each transaction.
Thus, traders who use the services of Forex brokers can independently calculate in advance the costs of their sale, based on the volume of trade in the Forex market using its strategy. The difference, that is, the spread of a dealing company operating as a Forex broker, is the lowest, so the broker's commission will be several tenths if you recalculate the commission for the spread.
When choosing a broker, traders can find out if this dealing company is a Forex broker. To do this, you just need to take advantage of the pattern - broker's commission-partners commission. These facts are not secret with Forex brokers. If the partners of the dealing company receive a small fee on ECN accounts, we can conclude that this company itself also charges low fees from traders.
Brokers can also earn on the services of "short" - short sales. The essence of such a service is to monitor the trend of prices for various stocks. What does the money come from not buying cheaper shares, and then selling more expensive. Traders can earn on the fall of stocks. That is, stocks can be sold at the same price, and with a fall, buy cheaper again. The difference formed during this procedure will be levied by a commission from the broker. Thus, both the trader will earn on the purchase and sale, and the broker will receive his commission.
Forex brokers create special strategic programs for making profit in the Forex market. At the same time, competent modern dealing companies earn honestly, without prejudice to the capabilities and rights of their clients.