For most purchases, Costco only accepts Visa credit cards — meaning you can't use a Mastercard or Amex to pay. An exception ...

Who doesn't love Costco? Costco has helped shoppers save on daily essentials like bulk paper products and high-quality ...

Costco loyalists can rack up some nice rewards with this card, but you'll only be able to redeem them once a year — and you'll have to go to a physical Costco store to do it.