Young woman in front of refrigeration case with cheese and dairy, shopping in a warehouse-style grocery store.

Why doesn’t my American Express card work at Costco?

You head off on your errand run and swing by Costco to stock up on paper towels, potato chips and protein bars. You’re calculating how much you’re saving in your head and head to the register. That’s when it hits you. You don’t have a Visa credit card and don’t have enough cash to pay […]