World Bank Warns of a 'Lost Decade' for Developing Economies, Cuts Global Growth to Post-Pandemic Low

The 'Lost Decade' in Numbers

The headline growth projection of 2.5% for 2026 is a downward revision from 2.9% in 2025, with forecasts cut for roughly two-thirds of the world’s economies relative to January predictions . Growth in emerging market and developing economies (EMDEs) is expected to hit a post-pandemic low of 3.6% .

The damage is not just in aggregate output but in the divergence between rich and poor nations. Nearly one out of every two developing economies has failed since 2019 to keep pace with the per-capita income growth of advanced economies . When China and India are excluded, the remaining EMDEs are on course for nearly a full decade of lost convergence .

The downside risks are severe. If Middle East hostilities escalate further and energy supply disruptions spill into financial markets, the World Bank estimates global growth could collapse to just 1.3% . Even in a less extreme scenario where oil flow disruptions via the Strait of Hormuz ease soon, the bank expects global inflation to average 4% in 2026, up from 3.3% in 2025 .

AI: A Bifurcation Risk and a Surprise Diffusion Wave

The report devotes significant attention to artificial intelligence, mapping both its risks and its surprising early diffusion patterns. The near-term growth boost from AI is expected to concentrate in advanced economies through higher investment, particularly in the United States . Over the medium term, the main prize is faster productivity growth—but estimates of AI’s productivity impact range from modest to transformative .

The danger of a “stark bifurcation” looms large. Advanced countries lead AI innovation and are poised to adopt the technology faster and more broadly, potentially widening the already significant gaps in productivity and living standards between frontier economies and developing nations .

Yet the data also reveal a more nuanced story. AI-related job postings are rising significantly faster in middle-income economies—up 16% in upper-middle-income countries and 11% in lower-middle-income countries—compared to just 2% in high-income countries . This suggests a “small AI” adoption wave is already underway in the developing world, driven by affordable, accessible AI solutions designed for everyday devices and practical applications in credit markets, education, and health services .

Faster AI adoption in EMDE regions with supportive regulatory frameworks, skilled workforces, and digital infrastructure investment—particularly in East Asia and the Pacific, Europe and Central Asia, and South Asia—could lift productivity growth across all regions . But the benefits are not automatic, and the report warns that delayed action in low-income and middle-income countries could leave them further behind .

Compounding Crises: Debt, Trade Fragmentation, and Energy

The report paints the 2020s as a period of cascading economic pressures that have compounded one another. Beyond the immediate Middle East energy shock, the report identifies several structural headwinds that act as permanent brakes on growth :

• Rising debt is a structural growth constraint for many developing nations, limiting fiscal space precisely when investment is needed most.
• Trade fragmentation is creating a permanent efficiency tax on global commerce, as tariff barriers rise and supply chains fragment.
• Politicized monetary policy and weakened credibility are undermining the effectiveness of central banks in managing inflation and expectations.
• Front-loaded trade and consumption gave the appearance of resilience in 2025, but the report suggests this was partly a temporary pull-forward of activity rather than a sustainable recovery .

Three Pathways to a More Prosperous 2030s

Despite the grim diagnosis, the report identifies “three pockets of opportunity” that could turn the 2030s into what the World Bank calls a “golden era for job creation and growth” .

1. AI adoption is finally scaling. Even under conservative assumptions, AI is expected to boost global productivity rates above the weak average of the 2020s. Under optimistic assumptions, growth in the 2030s could exceed the average recorded in the 2000s, making it the strongest decade of global growth since the 1970s . The World Bank estimates that well-managed AI adoption could lift global growth in the 2030s above the 2000s average .

2. Clean energy has become a security priority. The energy shock from the Middle East conflict has accelerated the strategic case for clean energy investment, transforming it from a climate goal into an energy-security imperative. The World Bank now views this as a durable structural growth driver .

3. Regional trade agreements already shape most global flows. Even as global trade fragmentation worsens, regional trade arrangements remain robust and can serve as a foundation for deeper integration, helping developing economies diversify supply chains and reduce costs .

The Policy Mandate

The report’s overall verdict is that the potential growth trajectory of the global economy will remain structurally depressed without concerted policy action. Boosting investment in sustainable sectors, cutting trade costs, leveraging services growth, and expanding labor force participation could raise potential GDP growth by up to 0.7 percentage points to 2.9% . The alternative, it warns, would have “profound implications for the world's ability to tackle climate change and reduce poverty” .