How do I calculate Margin in Forex?
As a trader, your account margin requirements are equivalent
to the total number of units of the base currency divided by the leverage.
For example: At ICmarkets, the standard leverage is 1:30;
others have 1:500. It means that if you trade 1 lot on GBPJPY with a leverage
of 1:500
1=100,000 units of the base currency.
It implies that GBP 100,000/500 is a 200 margin requirement.