Visa and Master Card do not actually issue credit cards or deal directly with either consumers or merchants. The two companies operate the worldwide computer networks that process the numerous transactions that occur every day from people who use their credit cards at merchants and ATMs. They earn profits by licensing their payment systems to financial institutions that market their respective cards to consumers and business entities.

Visa and Master Cards
Both of these companies offer nearly the same benefits to their customers. These benefits include travel insurance, car rental insurance, product warranty extensions, and others. Visa and Master Card are both accepted all around the world, and any differences between the two are mostly minor features that depend on the banks that issue the cards.