Ok I think I finally understand IB IDEAL PRO Forex service. I want to make sure I trade the correct DOLLAR amounts value of the forex GBPUSD ( price 1.7683) with margin at 50:1. So if I wanted to trade a total value of GBPUSD with margin $300,000 every time. GBPUSD Value : $300,000 Rate : 1.7683 QTY required in IB software = (1/1.7683)* $300,000 = 169,654 PIPS Value per point $16.96 Margin required = $300,000/50 = $6000 So if I traded AUDUSD, with the same $300,000 I just change the forex rate. Is this correct ?