Did you know this simple fact? HSBC, which has a large portfolio of U.S. credit-card customers, now generates better results with its subprime credit-card businesses than the portfolio that includes more-creditworthy customers, North America Chief Executive Brendan McDonagh said in a conference call Monday.

HSBC’s subprime credit-card customers generally have lower credit limits than prime customers, averaging less than $500, and are defaulting at a lower-than-expected rate. The reason: For many of those borrowers, a credit card is their only form of noncash payment.

About a quarter of HSBC’s $41 billion credit-card portfolio is considered subprime, and the delinquency rate on that is 10%, a 21% increase over last year. But because of higher interest rates charged to these borrowers, HSBC says that business is profitable.

The facts and statistics are current as of August 2009.

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