How To Log In To Your Costco Credit Card

If you are a holder of the Costco Visa credit card issued by Citibank, you will log in to your card account via the Citi Web site at

The login page will look like this (login area circled in red):


  • If you haven’t logged in to your Costco credit card online previously, go here to register your card to get access.
  • If you’ve forgotten your User ID or password, go here for help.
  • If you are still having trouble logging in, the Costco/Citicards credit card customer service phone number is 800-347-4934.