If you are the holder of a Charles Schwab American Express Card, you have several options to make your monthly card payment. You can pay:
- Online: and make your payment via the American Express site. Or access your card by .
- By Mail: Send your payment to the following address: American Express, P.O. Box 650448, Dallas, TX 75265-0448
- By Phone: The American Express customer service phone number for Charles Schwab credit card payments is 1-800-472-9297.