American Express, Discover, Mastercard and Visa are the four major credit card processing networks that oversee every card transaction from start to finish.

Payment processors like Mastercard Incorporated, Visa Inc., American Express Company, and Discover Financial Services are great businesses with 36% to 61% free cash flow margins.

Discover and American Express are both widely accepted in the U.S., though AmEx has a slight lead. But you'll still want a backup when traveling abroad.

American Express competes with Visa, MasterCard, and Discover Financial Services in the credit card space. It also competes with banks to draw consumers.

American Express and Discover are two well-established credit card programs offering cardholders distinct features and benefits. Understanding the differences between these two programs can help ...

Stock comparison between Visa, Mastercard and American Express Visa (NYSE:V) | The Unshakable Network Visa is the primary backbone of digital payments.

Key points Visa and Mastercard do not issue any credit cards of their own, but they are two of the largest payment networks for credit cards along with American Express and Discover.

Compare credit repair companies What are Visa and Mastercard? Visa and Mastercard are two of the four largest credit card networks globally, with the other two being American Express and Discover.

Visa and Mastercard are firing back at lawmakers over the fees that merchants pay for processing credit card transactions.

Visa or Mastercard? Not much difference. Focus instead on a card's issuing bank (Chase, Citi, etc.). Those banks determine a card's defining features.

You can use pre-paid Visa, Mastercard, American Express, and Discover gift cards with PayPal; here's how to add gift cards to PayPal.