ISTANBUL, Oct 3 (Reuters) - The euro zone will return to weak growth next year, the International Monetary Fund forecast on Saturday, urging a withdrawal of fiscal and monetary stimulus only when recovery takes hold.
In a twice-a-year report, the fund said the economy of the 16 countries using the euro would grow 0.3 percent in 2010 after an expected contraction of 4.2 percent this year.
"While the worst of the recession may be past, the recovery is far from solid, and policymakers cannot afford to drop their guard," the IMF said.
"Monetary and fiscal policy need to move carefully to sustain the upswing while preparing to disengage from the extraordinary measures put in place during the crisis," it said.
The IMF stressed the need to bring the financial sector back to full health to help the recovery.
"To prevent a lengthy spell of below-potential growth, the financial system needs to be restored to health as soon as possible," it said, urging fast recapitalisation of financial institutions where needed.
The withdrawal of fiscal stimulus should be coordinated between European countries, the IMF said, but noted that countries whose public finances are in bad shape should consolidate more urgently than others.
"Given the impact of the crisis on public finances, fiscal policy should err on the side of caution and start the necessary consolidation as soon as the state of the cycle allows," the IMF said.
The Fund expects the aggregate euro zone budget deficit in 2009 to be 6.2 percent of gross domestic product, rising to 6.6 percent in 2010.
The economies of most euro zone countries would grow next year, with the exception of Greece, Luxembourg, Ireland and Spain, which the IMF expects will continue contracting in 2010.
Outside the euro zone, the output of Hungary, Latvia, Estonia, Lithuania and Bulgaria will also continue to shrink in 2010.
On monetary policy, the report said interest rates should remain low for now to support economic activity and that the European Central Bank and other central banks in Europe should stay open to all policy options.
"Some central banks (including the ECB and a number of emerging market central banks) still have additional room for manoeuvre," the report said.
The ECB's main rate is at a record low of 1 percent now. Economists expect it to start raising rates from the third quarter of 2010. [
]But the IMF said that apart from having low interest rates, the ECB should also tell markets it intends to keep them low for a while, rather than keep them guessing, to boost credit.
"In addition, even more forceful signals that interest rates will be kept at very low levels for some time and further extension of nonstandard measures may be called for," it said.
It forecast euro zone inflation would be 0.3 this year and 0.8 percent in 2010 -- well below the ECB price stability target of just below 2 percent.
(Reporting by Jan Strupczewski, Editing by Ruth Pitchford)