Some thoughts on credit card fraud from a fellow academic, Corinne Cooper:
Interest rates are made up of three things:
1. The cost of money (interest goes up and down based, in part, on the supply of and demand for money, just like any commodity.)
2. The expected inflation rate (so the lender gets back its money in constant dollars)
3. A risk premium.
If I apply for a credit card (and I get an average of 5 solicitations a week), the rate that I qualify for is around 9%. Given a fed funds rate of 2.5% (the "cost" of money) and relatively low inflation projections (let's assume 2%), the difference is . . . (drum roll) THE RISK PREMIUM. For the best borrowers, the credit card companies collect over 4% to account for the risk of non-payment.
For riskier borrowers, the credit card interest rate is much higher, often as high as 29%: that's a 24% risk premium.
Think of it as the premium that you pay to insure the bank against your non-payment.
Here's what' so strange:
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http://www.talkingpointsmemo.com/bankruptcy/archives/2005/03/index.php#005044