Forex Broker Commissions --part 2

In this example, the bread middleman didn't charge you a commission to either the baker or you, the customer. Instead he bought at one price and sold at another. He will let you buy from him at $1.25, and let you sell to him at $1. So every time the baker has bread to sell, he checks the middleman's sell price. And when you want to buy a loaf of bread, you check the buy price.
In trading, this is known as the “bid” and “ask”. The bid is the price you can sell at, and the ask is the price you can buy at.

Considering forex broker commissions, the forex dealer will let the trader buy from him at 1.1971 and will let the trader sell to him at 1.1967. The difference 0.0004 is known as the spread. And this spread is where the forex “middleman” makes his money.

If the trader were to buy at 1.1971, then the instant the trader buys, he is “down” 0.0004, because if the trader wanted out of the trade, the best price he could sell it for is 1.1967. So as the forex dealer takes varying trades from people, each buying or selling, he can make money from this price gap. Each minimum increment, 0.0001 is referred to as a “pip”. So the spread in this example is 4 pips. In terms of dollars, for a forex contract of $100,000, this transaction would cost you $40 ($100,000 x 0.0004) or 4 pips. So the trader will find that some companies will advertise a spread of 3 pips on some currencies, usually ranging up to five on others. In forex trading, the tighter the spread is, the better.