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Wednesday, January 14, 2009

"Expanding Balance Sheets and Inflationary Policy"

Has Fed policy been overly expansionary, so much so that inflation is inevitable?:

On expanding balance sheets and inflationary policy, by David Altig: Here's a question I hear a lot (most recently during the Q&A portion of a speech delivered yesterday by my boss, Atlanta Fed president Dennis Lockhart): Has monetary policy become so expansive that the central bank's mandate to maintain price stability has been fundamentally compromised? Is the increase in the scale of the Federal Reserve's balance sheet inherently inflationary?

Jim Hamilton covered much of the territory implied by these questions in a very extensive Econbrowser post not too long ago, but the distinction between money creation and Fed balance sheet expansion continues to be confounded. ... The record though ... is that not all of that $2 trillion represents an increase in the money supply:


Only the blue portion of the graph above represents "pumping reserves into the banking system"—a fact that was covered pretty well in the aforementioned Econbrowser post—and in an even earlier post at News N Economics. In simple terms, the size of the Fed's balance sheet is not the same thing as the size of the monetary base (the sum of currency in circulation and reserve balances kept by banks with the Federal Reserve).

Of course, John Taylor's point was not that all of the increase in the balance sheet has amounted to pumping in reserves, just that a lot of it has, which is clearly true. But even here there may be less to the potential inflationary impact than meets the eye. In his speech at the London School of Economics earlier today, Chairman Bernanke explained:

"Some observers have expressed the concern that, by expanding its balance sheet, the Federal Reserve is effectively printing money, an action that will ultimately be inflationary. The Fed's lending activities have indeed resulted in a large increase in the excess reserves held by banks. ... However, banks are choosing to leave the great bulk of their excess reserves idle, in most cases on deposit with the Fed. Consequently, the rates of growth of broader monetary aggregates, such as M1 and M2, have been much lower than that of the monetary base."

Last week Greg Mankiw had a nifty graph (courtesy of Professor Bill Seyfried of Rollins College) of the so-called money multiplier precisely illustrating the point:


The money multiplier ... fell considerably when the Fed introduced the payment of interest on bank reserves.

That said, despite the fall in the money multiplier, the M1 measure of money has also expanded fairly noticeably since late summer:


The increase in M2—a slightly broader measure of money that adds to M1 items like savings accounts and time deposits—has been somewhat slower but still on the rise:


From December 2007 through August of last year, M1 and M2 grew by about 1.2 percent and 3.9 percent respectively. Since September—after which the rapid expansion of the Fed's balance sheet began and the Fed began to pay interest on reserves—the corresponding growth rates have been 13.4 percent and 5.9 percent.

Are those growth rates substantial? That is a tricky question—whether a particular growth rate of money is substantial or not can only be determined in relation to the pace of money demand (which has almost certainly accelerated as interest rates have fallen and the taste for safe and liquid assets risen). But I take two lessons from our early experience with the asset-oriented policies emphasized in the Bernanke and Lockhart speeches. First, expansions of the balance sheet need not imply expansions of the money supply. Furthermore, as Chairman Bernanke emphasized, the Fed has the capacity to contract reserves going forward...

The second lesson, clear in the M1 and M2 charts above, is that despite the payment of interest on reserves and near-zero federal funds rates, it is still possible to induce increases in the broad money supply through the standard channel of injecting reserves into the banking system.

Whatever direction you think the money supply ought to go, these observations should come as comforting news.

Update: See also Bernanke on the Fed's balance sheet by Jim Hamilton.

    Posted by on Wednesday, January 14, 2009 at 12:24 AM in Economics, Inflation, Monetary Policy | Permalink  TrackBack (0)  Comments (12)


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