South Korea rate policy and AI-fueled growth

In late July 2026 the Bank of Korea raised its benchmark policy rate from 2.5% to 2.75%, its first increase in three and a half years. Governor Shin Hyun‑song cited strong quarter‑on‑quarter GDP growth, robust semiconductor exports and rising demand from the global AI sector as reasons to maintain a tightening stance. Inflation remained above target, with headline rates around 3.2% and core inflation at 2.5%, prompting warnings that service and industrial‑goods prices could accelerate. Market observers expected the possibility of another hike as early as August.

Two days later the bank noted that the 2.75% rate sits within its estimated neutral‑rate range of 1.8%‑3.3%. It warned that the government’s goal of lifting potential growth to 3% and the ongoing semiconductor‑driven AI boom could push the neutral rate higher, suggesting future policy decisions will depend on whether this growth proves temporary or structural. The BOK highlighted the impact of a higher neutral rate on loan and deposit costs, estimating significant additional interest expenses for borrowers if mortgage rates rise.