Market share based on number of cards in circulation:
| Visa | MasterCard | American Express | Discover |
| 302 million | 203 million | 48.9 million | 54.4 million |
| 49.6% | 33.4% | 8.0% | 8.9% |
(Sources: Visa.com, MasterCard.com, AmericanExpress.com, Discover.com, Nilson Report, February 2010)
Market share based on credit receivables outstanding:
| Visa | MasterCard | American Express | Discover |
| $366.05 billion | $267.57 billion | $86.06 billion | $52.51 billion |
| 47.4% | 34.7% | 11.1% | 6.8% |
(Source: Nilson Report, February 2010)
Market share based on purchase volume:
| Visa | MasterCard | American Express | Discover |
| $764.2 billion | $476.9 billion | $419. 8 billion | $100.4 billion |
| 43.4% | 27.1% | 23.8% | 5.7% |
(Source: Nilson Report, February 2010)
Annual and monthly purchase/spending volume:
| Visa | MasterCard | American Express | Discover | Overall | |
| Annual | $2,530 | $2,349 | $8,584.9 | $1,845.6 | $2,895.4 |
| Monthly | $210.8 | $195.8 | $715.4 | $153.8 | $241.3 |
According to Experian, there are 3.45 open credit accounts per individual, which means that the average individual’s credit card spending is $832.5/month and $9,989 on an annual basis.
