Leverage is necessary for forex because the price deviations (the sources of profit) are merely fractions of a cent. Leverage, expressed as a ratio between total capital available to actual capital, is the amount of money a broker will lend you for trading. For example, a ratio of 100:1 means your broker would lend you $100 for every $1 of actual capital. My broker offers high leverage facility 1000:1. I used leverage very wisely and trading happily with them.