The central bank for the 20 countries that share the euro faces a dilemma.
"The inflation momentum is simply too strong for the ECB to pause," Danske Bank economist Piet Haines Christiansen said.
Just 14 months ago, that rate was languishing at a record low of minus 0.5%, meaning banks had to pay to park their cash securely at the central bank.
The euro zone's biggest economy, Germany, is bearing the brunt of an industrial slump and heading for recession, according to several forecasts.
On Thursday, the ECB is also expected to cuts its growth projections for this year and next, leading some economists to argue it should hold off from raising rates this month.
Persons:
Piet Haines Christiansen, Dirk Schumacher, Catherine Evans
Organizations:
ECB, European Central Bank, Reuters, Danske Bank, Services, Thomson
Locations:
FRANKFURT, Germany