Originally Posted by craz
AMEX also charges 2% for FEX instead of 3% like MC and VISA
Visa and MC both charge 1% (MC will charge a little less than 1% for USD transactions conducted outside the USA). Some banks (Citi, Chase, BoA, etc.) choose to tack on an additional 2%.
The goal is to find the most rewarding card that charges only 1%. Right now it seems Capital One and Target are the leading contenders for ForEx purchases, and AmEx for USD transactions overseas.