PARIS, Sept 19 (Reuters) - France's debt is expected to reach a record high of 119.3% of output in 2026, with a projected debt-to-GDP ratio of 121.7% in 2027, the finance ministry said on Saturday, in the latest indication of the country's deteriorating public finances.

The finance ministry made the projection in a declaration to the High Council of Public Finances, the body tasked with evaluating revenue and expenditure forecasts in the government's budget proposal. In 2025, France's debt-to-GDP ratio was 115.7%, and it was below 100% in 2019, according to government data.

The ministry also said it expects to end the year with a budget deficit of 5.4%. Prime Minister Sebastien Lecornu said on Thursday he expected the 2026 deficit to be well below 5.5%.

Lecornu has announced plans to include a €54 billion ($62 billion) savings drive in his 2027 budget to stop the deficit spiralling out of control, but he faces a tough task to push austerity measures through a deeply divided parliament amid mounting pressure from voters over the cost of living.

The premium France pays to borrow on the bond markets compared to Germany rose to more than a whole percentage point on Friday for the first time since the euro zone debt crisis, underscoring investor unease with its stretched finances ahead of elections next year.

($1 = 0.8709 euros)

(Reporting by Gabriel Stargardter; Editing by Kirsten Donovan and Ros Russell)

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