The OECD has raised its 2026 growth forecast for South Korea to 3.7%, up 1.1 percentage points from its June estimate of 2.6%. That was the largest upward revision among G20 economies. The change extends a rapid reassessment: the organization had projected 1.7% growth in March, meaning its view improved by two full percentage points in six months.
A stronger forecast with a narrow engine
Semiconductor exports and production sit at the center of the revision. The global artificial-intelligence investment cycle has strengthened demand for Korean chips, lifting factory output and overseas sales beyond earlier expectations. The forecast therefore reflects a powerful export engine rather than an evenly distributed acceleration across every industry or household.
The OECD also upgraded its 2027 outlook for Korea, from 1.9% to 2.6%. That makes the revision more than a one-year statistical jump, although the slower figure for 2027 still implies that the current pace may moderate. The Asian Development Bank separately lifted its 2026 forecast to 3.2%, reinforcing the direction of the reassessment while offering a more cautious estimate.
A stronger headline forecast can improve business confidence and tax-revenue expectations, but its benefits depend on how far semiconductor momentum spreads. Export manufacturers and their suppliers may feel the change first. Service businesses and households will be more sensitive to jobs, wages, borrowing costs and domestic demand, which are not captured by the growth number alone.
Inflation remains part of the balance. The OECD also raised its price outlook as economic activity and oil costs increased. Korea now enters the coming policy discussions with faster expected growth and renewed price pressure at the same time. Export data, chip production, consumer spending and inflation will show whether the upgraded forecast becomes a broader recovery.