Economists have scrambled to update rate hike expectations since the Fed on Wednesday said it was likely to hike interest rates in March and reaffirmed plans to end its bond purchases that month in what its chief Jerome Powell pledged will be a sustained battle to tame inflation.

"The Fed has all but admitted that it is seriously behind the curve," the Bank of America economists said in a report, adding that the aggressive tightening "should affect the economy with a lag, weighing on 2023 growth."

Other banks have also increased their expectations on rate hikes. For example, Deutsche Bank expects five increases this year, TD Securities sees four, and BNP Paribas forecasts as many as six.

Fed funds futures traders are pricing in almost five interest rate increases by year-end, with four likely by September.

Bank of America raised its 2022 fourth quarter forecast on the core personal consumption expenditures (PCE) index to 3.0%, from 2.6%, saying that "an even faster-than-expected drop in unemployment and longer-than-expected supply disruptions mean more inflation."

It also cut its 2022 U.S. economic growth forecast to 3.6%, from 4.0%, noting that "a combination of supply and demand factors points to weaker growth this year."

Bank of America said it now expects a peak fed funds rate of 2.75% to 3.0%.

(Reporting By Karen Brettell; Editing by Chizu Nomiyama and Tomasz Janowski)