Join the forex course: http://www.smarthelping.com/p/training-course.html Getting some nice margin calculations into the cheat sheet and as you can see brokers in the U.S. have lowered their available leverage for the GBP/USD pair to a max of 20:1 and a max of 50:1 in the eur/usd pair. This means it will take more capital to trade the same lot sizes that you have been.