France Campaign Promises Hit Budget Arithmetic

France's presidential campaign has acquired a hard constraint before voters have settled on a candidate: every promise now has to pass two tests at once, one set by the public finances and another by the constitution. The government calls its proposed 2027 budget "reversible," while Marine Le Pen's National Rally is coupling a pledge to cap the deficit with an earlier retirement age and a ban on Muslim headscarves in public. The common attraction is certainty. The problem is that the state has less fiscal and legal room than the language suggests.

Prime Minister Sébastien Lecornu plans to present the finance bill on September 30. His approach is deliberately narrow: no large reform that would bind the president elected next spring, no broad tax rise, and state spending that grows more slowly than inflation. Defence would receive another €6.4 billion and education €800 million, while employment programmes, development aid, agriculture and parts of health spending face restraint. Larger pensions could rise by less than inflation. Calling these decisions reversible is politically useful, but economically misleading. Once a lower benefit, cancelled programme or higher borrowing cost enters the baseline, the next government must find money to reverse it.

The arithmetic is already hostile. The 2026 budget targeted a deficit of 5.0 percent of GDP, only slightly below the 5.1 percent recorded in 2025. Weak output in the first half of this year has put the government's 0.7 percent growth assumption at risk, while debt-service costs and emergency demands have risen. Lecornu has floated a 2027 deficit around 4.9 percent, well above the path that was meant to put France below the European Union's 3 percent ceiling by 2029. Enguerrand Artaz, a strategist at La Financière de l'Echiquier, expects France to post the euro area's worst deficit again in 2026. That is not a market verdict on one party; it is the starting price of governing for all of them.

Le Pen's answer is to promise a fiscal break without surrendering the social commitments that distinguish her from the traditional right. At the MEDEF gathering she proposed a "golden rule" limiting deficits to 3 percent of GDP and said a programme due in October would identify €125 billion in savings. At the same time, she maintained that many workers should again be able to retire at 62, or at 60 after an early start. The departure of François Durvye, an economic adviser who helped connect the RN to business and argued for greater discipline, makes the tension more than rhetorical. The party can protect its electoral coalition, or produce a savings plan credible to lenders and employers; doing both will require choices it has not yet disclosed.

The renewed proposal to prohibit the veil throughout public space follows the same political pattern. RN deputy Jean-Philippe Tanguy said women who continued to wear it would be fined, comparing enforcement with seat-belt penalties. Jordan Bardella then denied seeking a "clothing police" and shifted the issue toward a referendum on Islamist ideology. Constitutional lawyer Anne-Charlène Bezzina has argued that a ban directed at an ordinary religious sign is legally untenable because France's secular state must also protect freedom of conscience and equality among beliefs. The Constitutional Council has allowed restrictions tied to concealing the face or a demonstrated public-order need; that is not a general licence to prohibit visible religion. A referendum may intensify the mandate claimed by the RN, but it does not make the conflict between the measure and protected rights disappear.

This is why the headscarf debate and the pension debate belong in the same account of the campaign. Both turn a complicated boundary into a promise of immediate sovereign control: a vote will settle what France may permit, and a spending plan will settle what France can afford. Each postpones the institution that will impose the trade-off. Courts will still review the legal instrument, and bond markets, parliament and the European fiscal framework will still price the budget. The RN is not alone in this habit. Lecornu's "reversible" label similarly transfers the final decision to a future majority while asking current creditors and ministries to accept an interim settlement.

France's €4.3 billion contract to supply Sweden with four Naval Group FDI frigates offers a more durable counterexample. The first vessel is due in 2030, and the ships will add air and missile-defence capacity in the Baltic while deepening a bilateral defence framework. The order cannot repair France's budget, but it shows the compounding value of choices maintained across electoral cycles: industrial capacity built in advance becomes export revenue, employment and influence when Europe's security needs change. It also explains why defence is protected even in a constrained budget.

The decisive documents will arrive soon. Lecornu must show on September 30 which programmes absorb the protected increases and whether a parliamentary coalition will tolerate them. Le Pen must show in October how €125 billion of savings coexist with pension reversal, and whether her constitutional method is more than a route around adverse legal advice. Until then, France's campaign is not principally divided between austerity and generosity, or secularism and religious liberty. It is divided between promises that name their trade-offs and promises that defer them.