MasterCard

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Costco to Switch from American Express to MasterCard

American Express already discontinued its credit card that was affiliated with Costco, so I guess it was only a matter of time before Costco stops accepting American Express all-together. The negotiations between American Express and Costco have broken down. In the past, American Express was the only credit card accepted at Costco. But now it seems that they will be switching to MasterCard instead.