Matt Yglesias:
You may not be interested in the Libor—the London Interbank Offered Rate—but the Libor is interested in you. Even though the typical American is never going to seek an interbank loan in London, the number is used as a benchmark for a wide range of other financial instruments.
Credit instruments with variable interest rates—private student loans, auto loans, adjustable-rate mortgages, credit cards, etc.—need to be indexed to some underlying marker of the overall cost of funds within the financial system. Often that’s something called the “prime rate” set here in the United States, but it’s also frequently the Libor.
So growing evidence that Libor numbers have been deliberately manipulated by banks for years means that millions of people have been paying the wrong interest rate on all manner of financial products. Vast sums of money have been wrongly snatched from innocent people and created equally vast undeserved windfalls for others. The basic structure of the world’s financial system has once again been exposed as fundamentally broken...
