The move is likely to put further pressure on the European Commission, which monitors EU countries' compliance with the bloc's fiscal rules.
Brussels is also closely monitoring structural deficits, which exclude one-offs and business cycle effects, and if kept under control prevent public debts from expanding.
France was required to reduce its structural deficit by 0.6 percent of output next year. It had initially targeted a 0.1 percent cut, but in the revised deficit is now envisaging no cut at all, the French government source said.
EU rules usually allow for a deviation of 0.5 percentage points from fiscal targets, at most.
On Wednesday, French Finance Minister Bruno Le Maire met EU economic commissioners Valdis Dombrovskis and Pierre Moscovici to discuss the budget. After the meeting he said he believed Brussels understood Paris arguments to boost spending.
Italy has a much larger public debt than France. (Reporting by Francesco Guarascio; Editing by Angus MacSwan)
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