The US central bank is prepared to raise interest rates by bigger steps than the quarter-point hike announced last week if that is what's needed to contain "much too high" inflation, Federal Reserve Chair Jerome Powell said Monday.

Consumer prices in the world's largest economy have surged to the highest seen in four decades, and the Fed last week raised the benchmark lending rate for the first time since the Covid-19 pandemic began to try to tamp down inflation pressures.

"If we conclude that it is appropriate to move more aggressively by raising the federal funds rate by more than 25 basis points at a meeting or meetings, we will do so," Powell said in a speech to an economics conference.

Inflation was already rising before the Russian invasion of Ukraine added to new price pressures and supply chain impediments that could spill over to the US economy, he told the National Association for Business Economics.

"There is an obvious need to move expeditiously" to remove the stimulus the Fed provided to the American economy during the pandemic, but Powell said central bankers are prepared to go beyond "neutral" and tighten policy if needed to achieve their goal.

Last week's rate hike was billed as the first in a series, and several policymakers have expressed willingness -- or the need -- to move in bigger steps.

St Louis Fed Bank President James Bullard dissented in the vote at last week's meeting of the policy-setting Federal Open Market Committee, because he wanted a half-point increase as the first move.

Atlanta Fed Bank President Raphael Bostic, who spoke to the NABE conference early Monday, said he will "adapt" his views to the data, even if it means raising a full point.

US Federal Reserve Chair Jerome Powell said the economic picture is favorable although some of the data may not be as good as it looks
US Federal Reserve Chair Jerome Powell said the economic picture is favorable although some of the data may not be as good as it looks AFP / Eric BARADAT

"I'm comfortable with more aggressive movements if that's what the data and the evidence suggests is appropriate," said Bostic, who unlike Bullard is not currently a voting member of the FOMC.

"I'm going to be very, very open in terms of my approach ... it could at some point be move nothing. It could be 25; it could be 50; it could be 75; it could be one," Bostic told reporters.

Like Bostic, Powell said the key issue is containing prices, and he dismissed the idea of raising the Fed's inflation target to three percent from two percent.

"Inflation is much too high. We have the necessary tools, and we will use them to restore price stability," he said.

The labor market is posing challenges however, with employers struggling to fill open positions, and many people staying out to the workforce, in part to care for children.

The Fed chief noted that the sum of jobs and vacancies is about five million bigger than the size of the US labor force.

"This is a labor market that is out of balance," Powell said in response to a question, adding "We need the labor market to be sustainably tight."

He was optimistic the Fed can grind down inflation and sustain a strong job market without tipping the US economy into a recession, an elusive goal known as a "soft landing" -- and he does not see "elevated" risk of recession in the next year.

Even with the oil price shock sparked by the conflict in Ukraine, he noted that "today the economy is very strong and is well positioned to handle tighter monetary policy."

But he cautioned that "very little is straightforward in the current context," and there is high uncertainty about the impact of the war.