Crunch time for Athens will come at the end of September when EU and IMF inspectors are expected to return to discuss how to plug a budget gap for 2015 and 2016, raising the specter of more austerity cuts that may spark a new political crisis.
"It's certainly going to get tougher both economically and politically," said Fredrik Erixon, director of the European Centre for International Political Economy in Brussels.
"They're kicking the issue a couple of months into the future ... we're going to continue with this charade between the troika and the government where everyone knows what's going on - that it's entirely unrealistic for Greece to live up to its expectations, both in the short and long term."
Samaras has already ruled out any further austerity measures for a nation faced with a 27 percent jobless rate and the Socialist PASOK party - his only remaining ally - has made it clear it will not support another round of painful cuts.
"The flexibility of introducing additional austerity measures over and above those in the current program would be an extremely difficult task for the government given the state of the economy and unemployment," said Platon Monokroussos, an economist at Eurobank.
In addition, funding from Greece's bailout ends in 2014, but Athens' assertion that it could start tapping the bond markets from next year to tackle its future funding needs have appeared premature since yields soared in June.
The IMF - which does not expect Greece to return to markets before the end of 2016 - estimates Greece could face a funding gap of between 5.5 and 9.5 billion euros over 2015-2016.
"What has the country really achieved? Fiscal adjustment and a reduction in labor costs. What they haven't achieved is structural reform across the board," an EU official said.