Global public debt may hit 100% GDP by 2029: IMF

IMF lifts the alarm on the next debt cycle

Global public debt is rising fast again, and the International Monetary Fund (IMF) now expects it to cross 100% of global GDP by 2029. The Fund’s updated warning comes despite what it describes as a resilient global economy, signalling that fiscal stress is building even without a recession. In 2025, global public debt rose to just under 94% of GDP, and the IMF says the trajectory is worsening sooner than it projected in April 2025. The message from the Fiscal Monitor is that governments are running out of easy choices as spending demands rise and interest costs stay elevated.

The IMF frames the current moment as a debt crossroads. Public balance sheets are being pulled in multiple directions: social spending needs, defence outlays, and efforts toward “strategic autonomy” are all competing for limited fiscal room. At the same time, refinancing is happening at higher rates than the post-2008 and pandemic-era period of cheap money.

Debt is rising faster than the IMF expected in April

The IMF said the 100% of GDP mark is now likely by 2029, which is one year earlier than it projected in April 2025. That shift matters because it shortens the timeline for policy adjustment. The report points to persistent deficits and rising interest burdens as key forces behind the debt build-up. It also flags the risk that new shocks can quickly worsen fiscal paths.

In an “adverse but plausible” scenario, the IMF warns global public debt could reach 123% of GDP by the end of the decade. IMF Fiscal Affairs Department head Vitor Gaspar also pointed to the possibility of “disorderly” market corrections that could create a fiscal-financial “doom loop”, drawing parallels with stress episodes such as the European sovereign debt crisis that began in 2010.

What is driving the build-up: spending pressure and interest costs

The IMF links the deterioration in public finances to mounting spending pressures across countries. Governments are dealing with social needs, higher defence requirements, energy security, and climate-related spending, alongside aging populations that lift pension and healthcare costs. These pressures are not evenly distributed, but the direction is broadly the same: bigger primary spending and difficult trade-offs.

Interest costs are adding another layer of strain. The IMF notes that interest payments have risen from about 2% to nearly 3% of global GDP in just four years, as governments refinance maturing debt at higher yields. This rise in debt-service costs reduces fiscal flexibility, especially where revenues are not keeping pace with spending.

Geopolitical shocks: Middle East conflict and tighter financial conditions

A key trigger worsening the outlook, as described in the Fiscal Monitor coverage, is the ongoing Middle East conflict. The IMF says the conflict has disrupted energy markets and tightened global financial conditions. Policymakers are increasingly forced to balance near-term relief with longer-term discipline: shielding households from rising fuel and food prices can mean larger deficits, but tightening budgets too quickly can amplify stress.

The burden is described as falling disproportionately on energy-importing and low-income countries, which face higher import bills and limited fiscal space. When financing is costly and currencies are under pressure, even countries with moderate debt ratios can face acute refinancing risks.

Trade friction is back on the risk map

The IMF also flagged risks linked to renewed trade frictions, including a potential escalation in a US-China trade war. In a separate briefing around the 2025 IMF–World Bank Annual Meetings, trade tensions were highlighted as adding to uncertainty, with China restricting exports of rare earth minerals and US President Donald Trump threatening 100% tariffs on select Chinese imports.

While the IMF slightly raised its 2025 global growth forecast in one update, it warned that a sharper trade shock could still weaken output. Lower growth, if it materialises, tends to worsen debt dynamics by reducing the denominator of the debt-to-GDP ratio and weakening revenues.

Where the pressure is highest: low-income and vulnerable borrowers

The IMF’s warning is particularly stark for countries dependent on external financing, especially borrowing in US dollars. As global rates rise and local currencies weaken, debt service becomes harder, and governments face harsher trade-offs between repayments and essential spending.

The IMF has highlighted a list of vulnerable economies facing acute debt risks, including Argentina, Egypt, Pakistan, Sri Lanka, and Ukraine. It warns that rising debt and shrinking fiscal space increase the chance of a “doom loop”, where market stress pushes up borrowing costs, worsening deficits and debt levels further.

India in the IMF view: improvement, but debt still high

Within this landscape, India is described as a relative bright spot alongside Mexico and Türkiye. The IMF notes these countries improved their fiscal position, supported by restraint in primary spending. It also says India’s debt trajectory is expected to stabilise or decline over time, aided by strong nominal GDP growth and ongoing fiscal consolidation.

But the IMF also flags that India’s debt-to-GDP ratio remains elevated and exposed to global risks. One reference in the report coverage puts India’s debt ratio above 84%, while a separate IMF-meeting briefing listing major economies in 2025 puts India at 80.0%. Either way, the direction of risk is clear in the IMF narrative: higher energy prices, tighter global liquidity, and volatile capital flows could complicate fiscal management if geopolitical tensions persist.

Big economies dominate the global debt trajectory

The IMF emphasises that the world’s major economies are central to the debt story. The United States is running deficits of 7% to 8% of GDP, and one IMF projection cited puts US debt at 142% of GDP by 2031. In other IMF commentary, US debt is projected to surpass 140% of GDP by 2030 or by the end of the decade.

China is also expected to see rising debt as it supports domestic demand. The IMF cites China’s debt rising from 88.3% of GDP in 2024 to about 113% by 2029. In Europe, parts of the European Union are loosening fiscal rules to accommodate increased defence spending, which the IMF treats as another factor that can keep deficits higher for longer.

Key numbers at a glance

Selected country debt ratios and IMF projections

Market impact: why investors and policymakers are watching

For markets, the IMF’s warning centres on the risk that higher debt and tighter fiscal buffers can amplify volatility when shocks hit. When governments have less room to borrow cheaply, the adjustment to new conflicts, commodity spikes, or financial corrections can be sharper. The IMF’s concern about a “disorderly” market correction is a reminder that sovereign borrowing costs can reprice quickly.

For emerging markets, the combination of higher global yields and potential capital flow swings is the key transmission channel. For India specifically, the IMF’s positive assessment on consolidation is a support, but the report’s risk list still includes factors such as energy prices and global liquidity conditions that can affect borrowing costs and fiscal arithmetic.

Conclusion

The IMF’s Fiscal Monitor signals a steady erosion of global fiscal space, with public debt rising to nearly 94% of GDP in 2025 and projected to exceed 100% by 2029, earlier than previously expected. It links the trend to persistent deficits, higher interest costs, and geopolitical shocks, and warns that adverse conditions could push debt to 123% of GDP. India is cited as improving on fiscal metrics, but with an elevated debt ratio and exposure to external risks. The next checkpoints will be the IMF’s upcoming country reviews referenced for the US and China, and how governments respond to the call to rebuild buffers while managing rising spending needs.