Poul Thomsen, director of the IMF's European Department, raised questions about the forecast that Greece could maintain a 3.5 per cent budget surplus for years as part of its plan for debt relief from European Union creditors.
"We question whether it is plausible for a country with such high unemployment and the attendant social pressures to be running such big surpluses over many political cycles to come," Thomsen said at the IMF-World Bank Spring Meetings in Washington.
Thomsen was speaking after Greek Prime Minister Alexis Tsipras said in an article published in the Financial Times that the IMF should stop tinkering with the country's latest bailout with European creditors, blaming the global lender for causing a delay in talks.
The IMF has been standing by with the possibility of adding its funds to the country's third bailout program with the EU but says it needs to see a strong package of structural reforms and a "credible" plan for growth and fiscal adjustment going forward.
More From This Section
To reach the 3.5 per cent target, he said, Greece would need to take large fiscal measures, the equvalent of around 4.5 per cent of GDP.
"We think that's a lot. That's a lof of -- if you want -- austerity," he said.
"If Greece and its European partners want to stick to that target, we can accept that target. But we need to see the measures."
He said the IMF still believes Athens needs to prioritize structural reforms, particularly in tax collection.
He noted that Greece exempts 55 per cent of households from taxes, compared to two percent in Portugal.
"What we need to do is to broaden the tax base... That's the first point of discussion.