Athens and its creditors have failed to agree a new deal over its massive debts, meaning it's now closer to leaving the euro.
Greece is struggling to repay its huge loans – one from the European Central Bank has to be settled by tomorrow.
The country is facing default and moving closer to a possible exit from the eurozone.
It's expected a limit of 60 euro will be placed on daily withdrawals at Greece's ATMs while the banks remain closed.
Many people queued over the weekend to take money out, emptying machines in cities across the country.
