You can get an American Express cash advance at participating ATMs, up to the card's available cash advance limit. To start, call American Express customer service at (800) 227-4669 to request a cash advance PIN. Once you have your PIN, simply insert the card into a participating ATM, type in your PIN, and select “Cash Advance.” Then enter the amount of cash you want to withdraw.
There may be other ways to get a cash advance from your American Express card, as well. For instance, you could write out an American Express cash advance check and use it like a regular bank check.
It’s important to take fees and interest into account before you get an Amex cash advance. The American Express cash advance fee will likely be 5% (min $10) of the transaction, whichever is greater. In addition to that, interest on the cash advance will begin accruing immediately, and it’s usually at least a 25% APR. There may also be ATM-owner fees, depending on where you withdraw money from. So it's best to avoid cash advances.
Try looking into alternatives, such as borrowing money from friends and family or a personal loan. If you have good credit, getting a personal loan may be cheaper than taking out a cash advance.