The global economy may face a recession next year caused by an aggressive wave of policy tightening that could yet prove inadequate to temper inflation, the World Bank said in a new report.

Policymakers around the world are rolling back monetary and fiscal support at a degree of synchronization not seen in half a century, according to the study released in Washington on Thursday. That sets off larger-than-envisioned impacts in sapping financial conditions and deepening the global growth slowdown, it said.

Investors expect central banks to raise global monetary policy rates to almost 4% next year, double the average in 2021, just to keep core inflation at the 5% level. Rates could go as high as 6% if central banks look to wrangle inflation within their target bands, according to the report’s model.