Costco Credit Card Login & Bill Payment

If you are a Costco member, you have several options to pay your monthly payment and easily sign in to your account and manage it and more. Read the following steps below:

How to Login to your Costco Credit Card

  1. Customers of Costco credit card can easily sign in into their account by going to the log in page.
  2. Enter your user name and password at the sign in page.
  3. Next, click on the “log in” button.

How to pay your Costco Credit Card bill?

This credit card is issued by Citibank to their users. You have several options to make your monthly card payment, you can make payment by:


Log in to your account via the Citi Credit Cards site and pay your bill

By mail:

Make your payment to the following address:

PO Box 9001016, Louisville, KY 40290-1016

By phone:

Customer service phone number of Costco credit card is 855-378-6467