SEOUL — The Bank of Korea raised its benchmark interest rate Thursday for the first time in more than three years, responding to renewed inflation, a weakened currency and growing household debt even as policymakers sought to preserve the country’s export-driven economic expansion.

The central bank’s Monetary Policy Board increased the base rate by 25 basis points to 2.75%, up from 2.50%. It was the first increase since January 2023 and marked a reversal from the easier monetary policy the bank had used to support growth through a period of weak domestic demand and global trade uncertainty.

The decision followed a renewed acceleration in consumer prices. South Korea’s inflation rate reached 3.2% in June, its highest level in roughly two and a half years and well above the central bank’s 2% target. Higher global energy costs, currency weakness and rising housing expenses have increased pressure on households and businesses, while the won has lost more than 4% against the dollar since the beginning of the year.

A weaker won makes imported oil, natural gas, food and industrial materials more expensive in local currency. Those costs can move through the economy through higher transportation, manufacturing and consumer prices, making currency stability an increasingly important part of the central bank’s policy decision.

The rate increase also reflects growing concern over household borrowing and real-estate prices, particularly in Seoul. South Korean households carry some of the highest debt levels among developed economies, leaving the central bank sensitive to any renewed acceleration in mortgage lending or speculative property activity.

Economic conditions gave policymakers more room to raise rates than they had earlier in the year. South Korea’s semiconductor industry has benefited from global demand for memory chips used in artificial-intelligence servers, data centers and advanced computing systems. Exports rose more than 70% from a year earlier in June, led by strong shipments from the country’s major technology manufacturers.

The government recently raised its forecast for 2026 economic growth to 3%, up sharply from its earlier projection, as semiconductor exports and public investment supported activity. The revised outlook would represent South Korea’s fastest annual expansion since 2021.

The strength of companies including Samsung Electronics and SK Hynix has helped offset weakness in other areas of the economy. South Korea is a major supplier of high-bandwidth memory and other components used alongside artificial-intelligence processors, placing the country near the center of the global technology investment cycle.

The same growth has created new inflation pressures. Higher corporate profits, wage increases and employee bonuses in the technology sector have supported consumer spending, while Seoul property prices and household borrowing have continued to rise.

The Bank of Korea had kept the policy rate at 2.50% since May 2025. Before Thursday’s meeting, economists broadly expected a quarter-point increase after officials signaled growing concern over inflation and the foreign-exchange market.

The decision was the first rate increase under Governor Hyun Song Shin, who began his term in April. Shin previously served as economic adviser and head of research at the Bank for International Settlements, the institution often described as the central bank for central banks.

South Korean financial markets reacted sharply. The Kospi fell heavily as investors sold semiconductor and other growth-oriented shares, while the won strengthened modestly against the dollar. Higher interest rates tend to weigh on technology stocks because they increase borrowing costs and reduce the present value investors place on future earnings.

The central bank is now expected to move carefully as it evaluates whether inflation remains above target and whether the currency and housing markets require additional tightening. Economists generally expect any further increases to come gradually because household debt makes consumers particularly sensitive to higher borrowing costs.

An additional increase would raise monthly payments for borrowers with variable-rate mortgages and business loans, potentially slowing household spending and investment. Holding rates too low for too long, however, could allow inflation, property prices and debt growth to become more difficult to control.

The July decision places South Korea among several Asia-Pacific economies that have tightened monetary policy as higher energy costs and currency pressures revive inflation concerns. It also signals that the Bank of Korea now views price stability and financial risks as more immediate concerns than the need to provide additional support to economic growth.

JBizNews Desk | Seoul

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