Currency conversions of trading costs as well as profits and losses from trading activities are executed at the mid FX Spot rate when you close the position, plus/minus 1 percent. We charge Platinum clients no more than plus/minus 0.75 percent, and VIPs no more than plus/minus 0.5 percent. For FX Options the rate is plus/minus 0.1 %.
The Currency Conversion fee does not apply to margin collateral. Only settlement of actual payments to or from the trading account are included, for example, buying/selling cash Stocks, paying/receiving options premium etc.
The rate used for currency conversion of amounts booked to your account is shown in the trading platforms under the Trades report.