What is margin?

Margin is a collateral required to take a trade. It is dependent on the leverage of the trading account.

Below shows the corresponding Margin for the respective Leverage:

Leverage    Margin
1:50              2%
1:100            1% 
1:200            0.5%
 
Examples:

To trade 1 standard lot (contract size of USD100,000) on an account with leverage of 1:100, the margin required is 1% of USD100,000 = USD1,000.

To trade 1 standard lot (contract size of USD100,000) on an account with leverage of 1:200, the margin required is 0.5% of USD100,000 = USD500.