Why do I keep harping on interest on reserves? Because, IMHO, the Fed’s decision to start paying interest on reserves contributed at least as much as the failure of Lehman Brothers or any previous event did to the liquidity crunch of 2008:Q4, which led to a deepening of the recession that had begun in December 2007.
That the liquidity crunch marked a turning point in the crisis is itself generally accepted. Bernanke himself (The Courage to Act, pp. 399ff.) thinks so, comparing the crunch to the monetary collapse of the early 1930s, while stating that the chief difference between them is that the more recent one involved, not a withdrawal of retail funding by panicking depositors, but the “freezing up” of short-term, wholesale bank funding. Between late 2006 and late 2008, Bernanke observes, such funding fell from $5.6 trillion to $4.5 trillion (p. 403). That banks altogether ceased lending to one another was, he notes, especially significant (p. 405). The decline in lending on the federal funds market alone accounted for about one-eighth of the overall decline in wholesale funding.
For Bernanke, the collapse of interbank lending was proof of a general loss of confidence in the banking system following Lehman Bothers’ failure. That same loss of confidence was still more apparent in the pronounced post-Lehman increase in the TED spread:
The skyrocketing cost of unsecured bank-to-bank loans mirrored the course of the crisis. Usually, a bank borrowing from another bank will pay only a little more (between a fifth and a half of a percentage point) than the U.S. government, the safest of all borrowers, has to pay on short-term Treasury securities. The spread between the interest rate on short-term bank-to-bank lending and the interest rate on comparable Treasury securities (known as the TED spread) remained in the normal range until the summer of 2007, showing that general confidence in banks remained strong despite the bad news about subprime mortgages. However, the spread jumped to nearly 2-1/2 percentage points in mid-August 2007 as the first signs of panic roiled financial markets. It soared again in March (corresponding to the Bear Stearns rescue), declined modestly over the summer, then showed up when Lehman failed, topping out at more than 4-1/2 percentage points in mid-October 2008 (pp. 404-5).
These developments, Bernanke continues, “had direct consequences for Main Street America. … During the last four months of 2008, 2.4 million jobs disappeared, and, during the first half of 2009, an additional 3.8 million were lost.” (406-7)
There you have it, straight from the horse’s mouth: the fourth-quarter, 2008 contraction in wholesale funding, as reflected in the collapse of interbank lending, led to the loss of at least 6.2 million jobs.