MENA Newswire, SEOUL: The Republic of Korea’s foreign exchange reserves declined in December for the first time in seven months, official data showed on Tuesday, ending a steady run of monthly increases as authorities took measures to address heightened volatility in the currency market. According to figures released by the Bank of Korea, the country’s foreign reserves stood at $428.05 billion at the end of December, down $2.6 billion from the previous month.
The decrease marked the first month-on-month fall since June, following six consecutive months of gains that had lifted reserves to their highest level since August 2022 by the end of November. A Bank of Korea official said the decline was linked to steps taken to curb volatility in the foreign exchange market. The official did not provide further details on the specific measures, but such actions typically involve the use of foreign currency assets to stabilize sharp movements in the local currency. The comments were reported by Yonhap News Agency.
The December reduction comes after a prolonged period of reserve accumulation during the second half of 2025. Over those months, reserves had benefited from valuation gains on foreign currency assets and relatively stable external conditions. The reversal highlights the sensitivity of reserve levels to exchange rate movements and policy actions, particularly during periods of increased market fluctuation.
South Korea’s foreign exchange reserves are composed primarily of securities denominated in foreign currencies, deposits held at overseas financial institutions, special drawing rights at the International Monetary Fund, and gold. Month-to-month changes in the total can reflect a combination of factors, including market intervention, changes in asset prices, and currency valuation effects. The central bank publishes reserve data monthly as part of its regular statistical disclosures.
Monthly data highlights market driven reserve movements
Despite the December decline, South Korea continues to hold one of the world’s largest reserve stockpiles. The level remains well above that recorded during periods of financial stress in previous decades and is widely regarded as a key buffer against external shocks. The reserves support confidence in the country’s ability to meet external obligations and manage periods of financial market instability.
The foreign exchange market experienced increased fluctuations toward the end of the year, reflecting broader movements in global currency markets. Shifts in major currencies and changes in cross-border capital flows contributed to short-term volatility in the Korean won, prompting authorities to focus on maintaining orderly market conditions. The Bank of Korea has previously stated that it closely monitors foreign exchange developments and coordinates with other financial authorities when needed.
The December data follow a period in which South Korea’s reserves had steadily increased from mid-2025. The last recorded decline before December was in June, after which reserves rose each month through November. The November total represented the highest level in more than two years, underscoring the significance of the December pullback, even though the overall level remains elevated by historical standards.
Foreign securities remain core reserve component
Financial authorities have consistently emphasized that foreign exchange reserves are managed with a focus on liquidity, safety, and profitability. While short-term fluctuations are not uncommon, the central bank has noted in past statements that maintaining sufficient reserves is an essential component of financial stability. The December figures illustrate how policy actions and market conditions can influence reserve levels over a relatively short period.
South Korea’s economy remains closely integrated with global trade and financial markets, making its currency and reserve position sensitive to external developments. The release of the December reserve data provides a snapshot of how the country’s external buffers evolved at the end of the year, following months of accumulation and amid renewed currency market movements. The Bank of Korea is expected to continue publishing monthly updates as part of its regular reporting schedule.