But the aggressiveness of the monetary policy action now underway also pushes central banks into new and risky territory. By tightening quickly and simultaneously when growth in China and Europe is already slowing and supply chain pressures are easing, global central banks risk overdoing it, some economists warn. They may plunge economies into recessions that are deeper than necessary to curb inflation, sending unemployment significantly higher.
“The margin of error now is very thin,” said Robin Brooks, chief economist at the Institute of International Finance. “A lot of this comes down to judgment, and how much emphasis to put on the 1970s scenario.”
In the 1970s, Fed policymakers did lift interest rates in a bid to control inflation, but they backed off when the economy began to slow. That allowed inflation to remain elevated for years, and when oil prices spiked in 1979, it reached untenable levels. The Fed, under Paul A. Volcker, ultimately raised rates to nearly 20 percent — and sent unemployment soaring to more than 10 percent — in an effort to wrestle the price increases down.
That example weighs heavily on policymakers’ minds today.
“We think that a failure to restore price stability would mean far greater pain later on,” Mr. Powell said at his news conference on Wednesday, after the Fed raised rates three-quarters of a percentage point for a third straight time. The Fed expects to raise borrowing costs to 4.4 percent next year in the fastest tightening campaign since the 1980s.