Originally Posted by
Blackcloud
It has become pretty standard among all CC issuers, I even see it on my AMEX. Yes it does mean that you may think you have been charged in AUD but will still be hit by your card's FX fee.
I've never experienced this and Amex's fees page doesn't list it as a possibility. ("Foreign Transaction Fees" ... "transactions in a currency other than Australian dollars are liable to incur a foreign transaction fee.") Banks use these foreign transaction fees on AUD partly so as to get a cut of the action when customers accept DCC on international transactions, but Amex doesn't allow DCC.