Costco accepts Discover cards, but only for online purchases at Costco.com. You can also use Mastercard and Visa cards when shopping at costco.com. For in-store purchases, Costco will only accept Visa cards. American Express cards are not accepted in-store or online. American Express was Costco’s sole credit card partner until 2016. That year, the wholesale club struck a deal with Visa to accept only Visa credit cards at its stores.
Because Costco accepts Discover cards online, certain Discover cards may help you get extra value on your online purchases. The Discover it Cash Back, Balance Transfer, Student Cash Back, and NHL cards offer 5% cash back, up to $1,500 spent per quarter, on rotating categories. In the past, Costco has been included in the “wholesale clubs” category. Unfortunately, this feature is not available in 2019. It last ran in Q4 2018.
Costco has its own co-branded card, the Costco Anywhere Visa by Citi. It offers 2% cash back on Costco purchases, among other rewards. And it has a $0 annual fee (though you will have to pay the $60 annual Costco membership fee to make purchases there).
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