Leverage and the Dangers of Margin Trading. Zoe Fiddes, Head of Sales at ORE Tech comments. Leverage can vary hugely from one broker to another; the standard leverage in the forex market is 1:200 leverage. So if you're trading a $100,000 or 1 lot in MT4 terminology, then you would have to put in $500 of your own money. So in recent years we've seen brokers offering leverage of up to 1:500 and this is also demanded by clients but more leverage means more risk