EU leaders have agreed to publish stress tests of banks in an attempt to shore up confidence in the financial system.
A stress test looks at how a bank would cope if a significant number of its loans were unpaid.
EU summit talks on Thursday were dominated by the debt burden weighing on many members.
Spanish Prime Minister Jose Luis Rodriguez Zapatero says publishing the results is the best way to stop damaging rumours about the condition of Spanish and other banks.
The summit also agreed on the need for a bank levy, to ensure that any future bail-out is funded mainly by banks, rather than taxpayers.
A 750 billion euro ($US920 billion) bail-out fund has been set up by the EU and the IMF in case any more countries suffer a similar debt crisis to Greece.
