France risks seeking a bailout from the International Monetary Fund (IMF) as its government teeters on the brink of collapse, its finance minister has warned.

French long-term borrowing costs hit their highest level since 2011 on Tuesday amid fears the second collapse of its government within a year would leave it unable to tackle a budget deficit, which is on course to hit 5.4pc of GDP this year.

Eric Lombard, the finance minister, admitted that asking the IMF to intervene “is a risk that is in front of us” as France struggles under the weight of its ballooning national debt.

France has never received a bailout from the IMF but the collapse of its government would leave the country in a precarious position with a record national debt of €3.3tn (£2.85tn).

Mr Lombard said: “It is a risk that we would like to avoid, and one that we should avoid, but I cannot tell you that this risk does not exist.”

Opposition parties lined up to say they would vote against Prime Minister Francois Bayrou after he attempted to break the political deadlock over his proposed deep budget cuts by calling for a confidence vote in his administration.

It comes after former prime minister Michel Barnier was ousted in a no-confidence vote in December for failing to gain support for steep reductions in public spending.

Mr Bayrou now looks likely to lose the confidence vote announced for September 8 over his plans to cut the budget deficit by 1.5pc of GDP next year.

The turmoil sent the yield on 30-year French bonds – a proxy for the cost of long-term government borrowing – up three basis points to a 14-year high of 4.42pc. France’s 10-year yield hit its highest level since March.

Rupert Harrison, of bond trader Pimco, said: “This is an ongoing political impasse, and the market’s not going to like that. We continue to think this is not going to be good for French borrowing costs.”

Mohit Kumar, chief European economist at Jefferies, said he expects “increased volatility and pressure” on French bonds in the coming days.

Shares in French banks were the hardest hit as a result of their large holdings of French debt. BNP Paribas was down around 5pc while rival Societe Generale shed more than 6pc.

The Cac 40 stock index in Paris fell a further 1.2pc on Tuesday, following a 1.6pc decline on Monday.

Andrew Kenningham of Capital Economics said: “The French prime minister’s decision to call an early vote of confidence is most likely to trigger his replacement with yet another prime minister or (less likely) fresh legislative elections.

“Either way, France’s budget deficit will remain well above the level needed to stabilise the debt ratio.”

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