Europe must strengthen economic growth or reduce government borrowing to prevent public debt from becoming unsustainable, according to a warning issued by the International Monetary Fund (IMF) on 16 October 2026.

The organisation believes that many European countries face difficult financial decisions as they attempt to balance economic development with growing expenditure on ageing populations, defence and energy infrastructure.

Without significant reforms, public debt could increase dramatically over the coming decades, placing additional pressure on government budgets.

Economic Growth Remains Weak

The IMF expects the eurozone economy to expand by just 1.1% in 2026 and 1.2% in 2027.

These forecasts remain unchanged from estimates published in April, highlighting the region's continuing difficulties in achieving stronger growth.

Inflation is also expected to remain elevated in the short term.

Consumer prices across the 21 countries using the euro are forecast to increase by 3.1% in 2026, followed by 2.8% in 2027.

By 2028, inflation is projected to ease to 2.2%.

Although slowing price increases could provide some relief for households, modest economic growth would continue to limit government revenues and opportunities for investment.

Most Countries Need Budget Reforms

According to the IMF, approximately three-quarters of European countries will require substantial changes to maintain sustainable public finances.

These measures could involve structural reforms designed to encourage growth alongside reductions in government budget deficits.

On average, the organisation estimates that fiscal adjustments equivalent to approximately 3.5% of gross domestic product will be necessary over the medium term.

This exceeds the roughly 2% adjustment currently included in European Union fiscal plans.

For approximately one-quarter of European countries, the required adjustment could surpass 5% of GDP.

Such reductions have historically proved difficult to achieve, suggesting that governments may need to reconsider spending priorities and encourage greater private-sector investment.

Public Debt Could Continue Rising

European Commission projections indicate that the EU's public debt could rise from 82.8% of GDP in 2025 to 84.2% in 2026.

By the end of 2027, the ratio is expected to reach 85.3%.

The outlook is more challenging within the eurozone, where debt could increase from 88.7% in 2025 to 91.2% in 2027.

Mateusz Szczurek, director of the IMF's European Department, warned that long-term spending pressures could push average public debt to as much as twice its current level without corrective measures.

Countries experiencing relatively rapid economic growth in Central Europe could face particularly significant increases.

Why Europe Needs Stronger Productivity

The IMF identifies weak productivity as one of the greatest obstacles to sustainable economic expansion.

European companies often encounter difficulties expanding across national borders because of differences in regulations, business requirements and market conditions.

Although the European Union operates a single market, important barriers remain.

Reducing these obstacles could help businesses grow, encourage innovation and improve competitiveness.

The organisation also recommends supporting technological development and creating conditions that allow successful companies to expand more easily.

Energy And Demographics Add Pressure

Europe's financial challenges extend beyond current borrowing levels.

Ageing populations are increasing demand for pensions, healthcare and other public services.

Meanwhile, higher defence expenditure and investment in cleaner energy infrastructure require substantial funding.

The IMF encourages countries to continue expanding renewable energy and diversifying supply chains, particularly for critical minerals.

These measures could reduce dependence on imported fossil fuels and strengthen economic resilience.

What Happens Next?

European governments face the challenge of improving public finances without undermining already fragile economic growth.

Sharp spending reductions could weaken demand, while excessive borrowing may increase future interest costs.

The IMF therefore favours a combination of carefully planned budget adjustments and reforms that support productivity.

Its assessment suggests that postponing difficult decisions could make future adjustments more expensive and complicated.

For Europe, the coming years will be crucial in determining whether stronger economic performance can help contain debt while preserving essential public services and long-term investment.