French Socialist government on Friday announced billions of euros of new tax on the rich, saying it is crucial to fulfil its pledge to reach finances rigor next year and stem public disenchantment.

Presenting his first annual budget since taking office in May, Prime Minister Jean-Marc Ayrault unveiled more than 30 billion euro (38.78 billion U.S. dollar) -budget saving for 2013, the toughest adjustment in three decades, to trim budget gap to 3 percent of national wealth from an expected 4.5 percent this year.

"This is a fighting budget to get the country back on the rails," Prime Minister Jean-Marc Ayrault said, maintaining a "realistic and ambitious" 0.8 percent growth target in 2013.

"It is a budget which aims to bring back confidence and to break this spiral of debt that gets bigger and bigger," he added.

Adopted by the cabinet early in the day, the next year draft budget eyes to garner 10 billion euros in extra taxes on wealthy households, 10 billion from taxes on consumers and businesses with already 4 billion euros of tax approved this year. Additional 10 billions of euros will be collected thanks of public spending's freeze and jobs cut.

As for officials' promise of balanced finances in 2017, the government said to miss an earlier target of zero deficit and to set 0.3-percent gap objective over the period.

After a cabinet meeting, President Francois Hollande hailed "a budget of recovery, accounts' restoring and return to growth."

But, analysts said the Socialists' financial roadmap is too optimistic as tame economic growth and high record joblessness could take the wind out of Hollande sails, putting the eurozne's second largest economy on hot seat. (1 euro = 1.292 U.S.dollar)