After more than seven hours of negotiations in Brussels, which lasted till the early hours of this morning, the finance ministers agreed that first of all, the shareholders and bondholders of a troubled bank will have to bear the costs.
If that is not sufficient, then depositors with more than 100,000 euros in their accounts will be asked to contribute.
Taxpayers will have to step in to fill a financing gap only as the last resort to avert a bankruptcy.
It is also intended to prevent collapse of banks in the future and to enable an early intervention by national authorities, he said.
The ministers also decided that savers below 100,000 euros will be exempted from any liability for a failed bank and their deposits will be fully protected, Noonan told a news conference after the meeting.
The deal was finally reached after a meeting of the finance ministers in Luxembourg on Saturday broke down in disputes over more flexibility for the member-nations and who should bear the future costs.
Since the outbreak of the financial crisis in 2008, taxpayers have been shouldering the costs of billions of euros pumped in across Europe to bail out a number of "system relevant" banks, whose collapse could unleash a chain reaction and threaten the stability of a nation.
Spain's financial crisis was triggered by its troubled banking sector and euro zone's fourth largest economy received a financial lifeline of 100 billion euros by the EU and the IMF in July, last year to stabilise its banking sector.
