Greek Prime Minister Alexis Tsipras says he will call a referendum on the outcome of the negotiations with international creditors.
The bailout talks were taking place in Brussels overnight.
"The people must decide free of any blackmail ... the referendum will take place on July 5," Tsipras said on Greek television.
He addressed the nation before a critical meeting of eurozone finance ministers yesterday, amid heightened anxiety over a possible Greek default that could spark its exit from the eurozone.
"For the past six months, the Greek Government has led the fight ... to find a viable agreement that respects democracy," Tsipras said.