Inflation at 3.2% Pushes Bank of Korea Into First Hike Since 2023

The Bank of Korea raised its benchmark rate to 2.75% on Thursday, marking its first increase since January 2023 as consumer inflation climbed to a three-year high.

The decision lands as South Korea’s stock market swings violently, with chipmakers SK Hynix and Samsung Electronics leading steep losses on Thursday.

Inflation Forces the BOK’s Hand

Governor Shin Hyun Song, who took office in April, has previously signaled higher rates. On Thursday, the nation’s central bank raised its benchmark rate 25 basis points. The decision matched the forecast in a Reuters poll of economists.

Rising inflation and a weak won drove the move. Headline inflation in Korea reached 3.2% in June, the highest since 2023. The central bank flagged that large IT-sector performance bonuses could feed broader wage gains. That would add pressure on prices.

Meanwhile, the won has weakened 2.93% against the dollar this year. It slid to 1,561.5 on June 5, its weakest level in 17 years.

Despite currency pressure, the economy has benefited from demand for AI infrastructure. Gross domestic product grew 1.8% in the first quarter.

That marked the fastest quarterly pace in more than five years. The strong data prompted the government to lift its 2026 forecast to a five-year high of 3.0%

Meanwhile, the hike is not an outlier. The European Central Bank lifted rates to 2.25% in June. The Bank of Japan raised its rate to 1.00%, its highest since 1995. A Middle East oil shock is reviving inflation across major economies.

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How the Bank of Korea’s Rate Hike Could Impact Stocks and Crypto

The decision also carries weight for crypto and stocks. South Korea ranks among the most active digital-asset markets, with heavy retail participation via exchanges such as Upbit. Rising domestic borrowing costs tend to compress the capital available for speculative assets. 

Stocks may also face additional pressure. South Korea’s equity market has already seen sharp swings this year, driven by volatile sentiment around AI and semiconductor stocks. 

Higher interest rates could further weigh on the market by tightening financial conditions and prompting investors to rotate away from high-growth technology shares.

The KOSPI fell nearly 6.0% to 6,852 on Thursday, extending its monthly losses. AI chipmaker SK Hynix plunged 11.05% to 1,852,000 won after a 15% decline earlier in the week, while Samsung Electronics fell more than 3%.

The path ahead also matters beyond Thursday’s move. Most economists expect one more hike to 3.00% by year-end. Whether higher rates keep retail investors on the sidelines or redirect capital between stocks and cryptocurrencies remains an open question.

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