Euro notes The EBA wants banks to have capital reserves of between 9% and 10%
of their overall assets
European banks may have to raise a collective 200bn euros ($276bn; 175bn) to
boost their capital reserves.
The proposal is being made by the European Banking Authority (EBA), which wants
the banks to have more funds in reserve to help protect them from any future
shocks in the financial markets.
BBC business editor Robert Peston said banks may struggle to raise the money.
He said that governments were likely to have to provide the funds in many
cases.
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You have to assume the governments will do what the regulators propose, because
otherwise they would risk undermining the credibility of the regulatory system
image of Robert Peston Robert Peston Business editor, BBC News
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Our editor said: "It is a good deal of money for those banks to find. And in
the case of many of those banks, they will not be able to raise it on markets.
"It would have to come from governments."
The EBA, Europe's banking industry regulator, wants banks to boost their
capital reserves to between 9% and 10% of their overall assets, after allowing
for reductions in the value of their loans to Greece, the Irish Republic,
Portugal, Spain and Italy.
These are five of the most indebted countries in the eurozone, with Greece, the
Irish Republic and Portugal continuing to rely on bailout funds from the
European Union and International Monetary Fund.