The Costco TrueEarnings Credit Card is issued by American Express, and you will interact directly with American Express to pay your bill online or by mail, or to contact customer service when you need help. Below is the information you need to access any or all of those options:
- To pay your Costco credit card bill online, go here to log in at the American Express site.
If you want to pay your Costco True Earnings Card bill by mail, the payment mailing address is:
P.O. Box 360001
Ft. Lauderdale FL 33336-0001
If you are having trouble making a payment or need other help with your Costco credit card, the customer service phone number to call is: 1-800-528-4800.