The world of credit card processing is notoriously opaque. American Express recently argued before the U.S. government that few of its merchants understand the complicated pricing structures of Visa, ...

Third time's a charm? Visa and Mastercard said they've reached a credit card swipe-fee deal (again) with merchants. Would it save consumers money?

Under the new agreement, Visa and Mastercard would reduce swipe fees by 0.1 percentage point for five years. Additionally, ...

Every day, millions of Americans stand at store checkout counters and make a seemingly random decision: after swiping their debit card, they choose whether to punch in a code, or to sign their name.