The European Central Bank said today it will charge euro zone banks a total of €326m for the cost of supervising them over two years. 

"The total amount of fees to be recovered by the ECB for the costs of its prudential supervision of the euro area banking sector in the 2014-15 period will be £326m," the central bank said in a statement. 

The fees included €30m for the costs incurred in the final two months of 2014 when the ECB assumed its new role as euro area banking supervisor, and €296m for the anticipated expenditure for the full year 2015, it explained. 

The Single Supervisory Mechanism or SSM, an autonomous unit within the ECB, took over as Europe's banking watchdog in November and is directly responsible for monitoring 123 banking groups. 

Those 123 banks would have to pay €289.7m or 89% of the total amount of fees.

The remaining €36.3m, or 11% of the total, would be recovered by around 3,500 less significant banks indirectly supervised by the ECB, it said. 

ECB raises Greek bank emergency funding by €1.4bn

The European Central Bank has raised the maximum emergency funding that Greek banks can obtain by €1.4bn, a banking source said.

The increase - which brought the overall ceiling on Emergency Liquidity Assistance to €76.9bn - came as Athens sought to conclude marathon talks with its EU-IMF creditors on a new loan deal.

Taking into account other unused amounts, Greek banks have a total of €3bn in funding available to them this week, the banking source added.

In March, they lost €2bn to withdrawals from private and business account holders, the Bank of Greece said in a statement.

Greek banks are dependent on the ECB for financing, but the euro zone's central bank no longer accepts Greek sovereign bonds as collateral for loans.

It had done so previously under a special waiver mechanism, but rescinded that waiver until Athens' new anti-austerity government under Prime Minister Alexis Tsipras agrees a new debt deal with its creditors.

Without the waiver, Greek banks now rely solely on ELA, which is more expensive than normal central bank refinancing operations.

Mr Tsipras's government has said it is hoping to conclude by early May a deal with its international creditors that would give access to some €7.2bn still left in the country's EU-IMF bailout package.