For the Federal Reserve, this time really is different. Having learned a hard lesson in the last recovery — don’t tighten monetary policy too early — the central bank is leaning in the opposite direction. In practice, that means the Fed will not just emphasize actual inflation over forecasted inflation, but will also attempt to push the inflation rate above its 2% target. It’s a whole new ballgame.
The Fed’s traditional Phillips curve approach to forecasting inflation, which relies on the theory that inflation accelerates as unemployment falls, was widely criticized during the most recent economic recovery. Inflation remained quiescent in the wake of the Great Financial Crisis even as the unemployment rate fell to 3.5%, well below the 2012 high estimate of the natural rate, or 5.6%. The Fed’s commitment to Phillips curve-based inflation forecasts induced it to raise interest rates too early in the cycle and continue to boost rates into late 2018 even as faltering markets signaled the hikes had gone too far. The Fed was eventually forced to lower rates 75 basis points in 2019 to put a floor under the economy. Inflation remained stubbornly below the Fed’s 2% target throughout that period.
Faced now with the prospect of another prolonged period of low inflation, Fed officials are signaling they will place less emphasis on Phillips curve estimates when setting policy. Fed Governor Lael Brainard said this week that “with inflation exhibiting low sensitivity to labor market tightness, policy should not preemptively withdraw support based on a historically steeper Phillips curve that is not currently in evidence.”
No longer are estimates of longer-run unemployment taken as almost certainly indicating the economy is at full employment. Instead, Brainard said the Fed should focus on achieving “employment outcomes with the kind of breadth and depth that were only achieved late in the previous recovery.” The Fed is going to try to run the economy hot to push down unemployment.
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By de-emphasizing the Philips curve, the Fed loses its primary inflation forecasting tool. Instead of an inflation forecast, the Fed will rely on actual inflation outcomes to determine the appropriate time to change policy. Brainard pointed out that “research suggests that refraining from liftoff until inflation reaches 2% could lead to some modest temporary overshooting, which would help offset the previous underperformance.”