The European Central Bank is expected to delve deeper into its toolbox to stimulate bank lending and fight off a recession as Europe's leaders gather to lay the foundations for a fiscal union.
ECB policy makers meeting in Frankfurt will cut the benchmark interest rate by a quarter percentage point to 1 per cent, according to economists in a Bloomberg News survey.
They may also loosen collateral criteria to give banks greater access to cheap cash and offer longer-term loans, said three euro-area officials with knowledge of the deliberations.
Hours later, Europe's leaders will convene in Brussels for talks to frame the fifth "comprehensive" solution in 19 months to a debt crisis that's left Germany and France facing the threat of losing their AAA rating from Standard & Poor's.
The ECB says governments must address the cause of the turmoil as it focuses on getting banks lending again rather than increasing purchases of indebted nations' bonds.