The beginning of a relatively long discussion by Ben Bernanke:
Modifying the Fed’s policy framework: Does a higher inflation target beat negative interest rates?: Nominal interest rates are very low, and in a world of excess global saving, low inflation, and high demand for safe assets like government debt, there’s a good chance that they will be low for a long time. That fact poses a potential problem for the Federal Reserve and other central banks: When the next recession arrives, there may be limited room for the interest-rate cuts that have traditionally been central banks’ primary tool for sustaining employment and keeping inflation near target.
That concerning possibility has led to calls for a new monetary policy framework, including by Fed insiders like John Williams, president of the San Francisco Fed. In particular, Williams has joined Olivier Blanchard and other prominent economists in proposing that the Fed consider raising its target for inflation, currently 2 percent. If the Fed targeted a higher average level of inflation, the reasoning goes, nominal interest rates would also tend to be higher, leaving more room for rate cuts when needed.
Interestingly, some advocates of a higher inflation target have been dismissive of the use of negative short-term interest rates, an alternative means of increasing “space” for monetary easing. For example, in a recent interview in which he advocated reconsideration of the Fed’s inflation target, Williams said: “Negative rates are still at the bottom of the stack in terms of net effectiveness.” Williams’s colleague on the Federal Open Market Committee, Eric Rosengren, also has suggested that the Fed may need to set higher inflation targets in the future while asserting that negative rates should be viewed as a last resort. My sense is that Williams’s and Rosengren’s negative view of negative rates is broadly shared on the FOMC. Outside the United States, Mark Carney, governor of the Bank of England, has expressed openness to targeting nominal GDP (which essentially involves targeting a higher inflation rate when GDP growth is low), but has also made clear that he is “not a fan” of negative interest rates.
As I explain below, negative rates and higher inflation targets can be viewed as alternative methods for pushing the real interest rate further below zero. In that context, I am puzzled by the apparently strong preference for a higher inflation target over negative rates, at least based on what we know now. ...