* Finance ministry revises down 2009, 2010 GDP forecasts
* 2009 public sector gap seen at 5.5 percent of GDP
* Budget may have to be reassessed
* For TABLE with forecasts double click on [
](Updates with official forecast, details)
By Jana Mlcochova
PRAGUE, July 22 (Reuters) - The Czech economy will contract twice as fast this year as previously expected and the fiscal gap will grow faster as the economy suffers from a drop in foreign demand, the Finance Ministry said on Wednesday.
The ministry slashed the 2009 gross domestic product (GDP) forecast to minus 4.3 percent, the deepest contraction since a post-communist crisis in 1991 and deeper than the 2.3 percent shrinkage predicted in April.
Next year should see a return to growth of a mere 0.3 percent, weaker than the previous estimate of 0.8 percent, the ministry's official forecast showed on Wednesday.
The ministry hiked its expectations for the 2009 public sector deficit to 5.5 percent of GDP from 4.5 percent seen in April, and the total government debt to 34.5 percent of GDP from 33.9 percent.
The new outlook shows the economy did not hit the bottom in year-on-year terms in the first quarter, but the ministry said quarter-on-quarter data for the rest of the year should show improvements.
"We expect that the economic drop measured quarter on quarter will stop already in the second half of 2009. The economy should stabilise on the current low level and a moderate recovery should take place during 2010," the ministry said.
The gross domestic product in the first three months plunged by 3.4 percent, a record figure in both year-on-year and quarter-on-quarter comparison.
The country has suffered mainly from a collapse in west European demand, its key growth driver, but has escaped a financial sector meltdown thanks to high savings and relatively low foreign debt.
The central bank forecasts the economy will contract by 2.4 percent this year but Vice Governor Miroslav Singer told Reuters on Tuesday a new outlook due to be released in August is likely to revise that expectation downwards. [
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FISCAL CONCERNS
The new estimates mean the state budget may have to be adjusted to account for lower revenues, Finance Minister Eduard Janota said.
Analysts estimate a 1 percentage point drop in GDP corresponds to a 10 to 15 billion crown ($550-$825 million) rise in the central state budget deficit, which for this year was seen at 170 billion crowns.
The ministry has in the past weeks forecast the central government budget gap, the main part of the public sector balance, would reach about 160-170 billion crowns this year, versus the original target of 38 billion.
The overall public sector deficit outlook was revised up by one percentage point from April to nearly double the European Union's prescribed 3 percent ceiling.
Czech policymakers, mainly the central bank, have begun to warn that the swelling fiscal gap and a budgeting system based on ambitious growth expectations were raising the risk of a public finance meltdown in the medium term.
The government has already doubled its 2009 gross borrowing target, including replacement of maturing bonds, to around 280 billion crowns.
The bleak fiscal outlook and rising borrowing needs did not put off investors in Wednesday's 10-year bond auction, which was the best-bid sale measured by the bid/cover ratio since the paper was launched in March. [
] (Editing by Stephen Nisbet)