Most consumers are familiar with the MasterCard (NYSE:MA) brand. Many of you, Foolish readers, may even be carrying a MasterCard branded card in your wallet or purse right at this very moment.

But brand familiarity is not enough to justify an investment, even in a company as well-known globally as MasterCard or its competitor Visa (NYSE:V). In the video below, Motley Fool contributor Jay Jenkins takes a look at perhaps the most important fundamental of any company -- how does MasterCard actually make money?

Fool contributor Jay Jenkins has no position in any stocks mentioned. The Motley Fool recommends MasterCard and Visa. The Motley Fool owns shares of MasterCard and Visa. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.