PARIS, FRANCE / RankWire.AI / – The OECD has upgraded its forecast for worldwide economic expansion in 2026 to 2.9%, citing signs that the global economy is more robust than previously anticipated. This revised estimate is an increase from the 2.8% projection made in the organization’s June outlook. Nonetheless, the OECD lowered its 2027 growth estimate slightly to 3.0% from 3.1%. Ongoing strong investments related to artificial intelligence continue to bolster production, trade, and overall economic activity. Meanwhile, rising energy prices and inflationary pressures persisted as significant challenges across key economies.
According to the September Interim Economic Outlook, the pace of global growth decelerated in the first half of 2026. The annualized growth rate fell to 2.6%, down from 3.6% during the latter half of 2025. Despite this slowdown, economic activity in many energy-importing and exporting nations proved to be stronger than expected. Factors such as oil inventory levels, additional production outside the Gulf region, and alternative supply pathways contributed to easing the energy shock. Additionally, decreased oil demand from China played a role in stabilizing global energy markets.
The OECD emphasized that technology investment remains a crucial driver of economic support. Semiconductors exports saw significant growth in Korea and Japan, while China also experienced an uptick in technology exports. The industrial sector linked to technological advancements maintained rapid expansion across much of Asia. Similar growth was observed in the United States and several European nations. Consumer confidence improved in advanced economies after May, and unemployment rates stayed low in many countries. However, persistent higher fuel costs continued to exert pressure on household purchasing power.
US Economy Gains Momentum While Eurozone Remains Flat
The US economy is expected to expand by 2.2% in 2026 and 2.1% in 2027. This growth is supported by robust investments related to artificial intelligence, although slower consumer expenditure and modest real income growth are tempering overall progress. The euro area’s GDP is projected to increase by 1.0% in both years, with energy prices and higher interest rates acting as drag factors across the region. Japan’s economy is forecast to grow 0.8% in 2026 before slightly slowing to 0.7% in 2027.
China’s economy is expected to grow by 4.5% in 2026, then ease to 4.2% in 2027. India is projected to see a 7.1% growth in the fiscal year 2026-27, following a 7.8% expansion in the previous year. Growth in India is anticipated to be 6.5% in fiscal year 2027-28. Indonesia’s economy is likely to expand 5.2% in 2026 and 5.1% in 2027. Mexico’s gross domestic product is forecast to increase by 1.5% this year and 1.8% in the next.
G20 Inflation Rises as Energy Costs Continue to Influence Prices
Inflation remains a key concern within the OECD outlook. The headline inflation rate across G20 economies is forecasted at 4.1% in 2026, up from 3.4% in 2025, with a predicted easing to 3.6% in 2027. Advanced G20 nations are expected to experience inflation of 3.2% this year and 2.6% next year. Specifically, the United States inflation rate is projected to decline from 3.6% in 2026 to 2.6% in 2027. The euro area’s inflation rate is estimated at 3.0% and 2.9%, respectively.
The OECD pointed out that rising energy costs have increased household expenses and reignited inflationary pressures in many economies. Additionally, long-term government bond yields have risen as borrowing costs and debt servicing obligations grow. Mathias Cormann, Secretary-General of the OECD, stated that global growth has performed better than expected, although the economy remains weaker compared to last year. The organization urged targeted temporary support measures, sustainable public finances, and long-term productivity enhancements. It also called for governments to expand workforce skills, diversify energy sources, and promote wider adoption of artificial intelligence.