Greek banks were closed on Monday to prevent the financial system of the country from being collapsing into panic states.
Account holders faces strictly limited withdrawals from ATMs. Furthermore, the trading of the Greek stocks and bonds also stopped.
Greece faced the default rapidly, and withdraw from the eurozone were announced on Sunday.
The European leader confronts the worst moment in the history of euro now.
President Obama called German Prime Minister Angela Merkel on Sunday, and they agreed to taking all measures to solve the crisis.
The opportunity of the rapid escalation in the crisis was from the decision that Greek government to poach the negotiator from a bailout talk late on Friday.
Prime minister Alexis Tsipras hit the draft proposal from Europe and the International Monetary Fund, and he said he would approach Greek people in a referendum July 5.
Thereafter the European authorities made an effort intensively to minimize the damage.
The European Central Bank announced on Sunday that they would not offer new urgent support to the Greek banks. It was forced to act because without a financial support, Greece is heading for default as early as Tuesday, and may have to leave the euro after all.
Greek authorities said that a banks remain closed through July 6, and the daily withdrawals is limited to 60 euros or approximately 67 dollars.
The stock exchange will be closed during the same period.
Greeks banks have been bleeding billions of euros for months before the debt crisis, which took a dramatic turn even to be worse this weekend, leading long lines at ATMs in Athens.
Tourists still have to access to cash. A debt and the credit card which the visitor does not receive capital regulation and are published abroad should function normally.
When Greece must pay loan to the IMF, it faces the important deadline on Tuesday.
Greece surely to default on the payment.
Extended bank shut down and the tough capital regulation will bring the further dilapidation to the Greek economy by keeping away a tourist and cooling down a commercial activity.
As Greece unable to borrow from financial markets, and apparently unwilling to strike a deal with the only institutions prepared to lend it money, it is slippery towards leaving from the euro.