Korea Development Institute Cuts 2026 GDP Forecast to 1.8% on Export Weakness

• KDI cuts South Korea 2026 GDP growth forecast to 1.8%, down from prior 2.3% estimate
• Semiconductor and shipbuilding export volumes declining as global demand moderates
• Domestic consumption subdued as household debt servicing costs remain elevated

The Korea Development Institute lowered its 2026 GDP growth forecast to 1.8% from 2.3%, citing deteriorating export momentum and persistent domestic demand weakness. The downward revision reflects a sharper-than-expected slowdown in semiconductor shipment volumes, declining orders for Korean-built vessels, and compression in petrochemical export margins. KDI economists flagged that the external environment has deteriorated more rapidly than baseline assumptions incorporated six months ago, with US tariff uncertainty adding a further headwind to trade-dependent Korean industries.

South Korea's export-dependent economy remains highly sensitive to fluctuations in global technology and manufacturing cycles. The weakness in semiconductor exports is particularly notable given that chips account for roughly 20% of Korea's total outbound shipments. While Samsung and SK Hynix have reported improved pricing in advanced DRAM and HBM memory, overall volume growth has not kept pace with prior expectations. KDI also noted that domestic private consumption growth is being held back by elevated mortgage debt costs following the Bank of Korea's tightening cycle.

The KOSPI fell modestly on the KDI report, with rate-sensitive financial stocks and export-oriented industrials leading the decline. Strategists at NH Investment Securities argued the revision had been largely anticipated and that the key catalyst for Korean equities will be the timing of Bank of Korea rate cuts expected in the second half of 2026. Currency traders pushed the Korean won slightly weaker against the US dollar, adding further complexity for Korean exporters pricing international contracts.

Source: Korea Herald, The Korea Economic Daily | Cluster 429355