> They have no credit limit at all To be fair, none of AmEx's charge cards have a limit. But even the Centurion Card will get declined if you try to spend too

> They have no credit limit at all To be fair, none of AmEx's charge cards have a limit. But even the Centurion Card will get declined if you try to spend too much, they just don't tell you what "too much" is. I would even bet that the credit limit formulas across all their charge cards are the same and that the inputs are purely customer & purchase specific. Note that AmEx DOES have credit limits on their credit cards, where the distinction between charge & credit cards is that you "have" to pay off the charge card balance each month (although that isn't even totally true any more).