South Korea Moves to Draft 20-Trillion-Won Supplementary Budget Amid Middle East Oil-Price Risks

South Korea’s budget authorities moved quickly on Wednesday to begin drafting a supplementary budget in response to rising Middle East oil-price risks tied to the US-Iran conflict, after President Lee Jae-myung urged swift action. The government aims to reduce financial market disruption by avoiding new national debt issuance, even as the country’s main budget plans already expanded to a record level.

With the 2026 budget already surpassing 700 trillion won, officials say the supplementary budget could still reach around 20 trillion won. Analysts caution that adding more spending with no new debt issuance could still spur additional money in circulation, potentially lifting prices, pressuring the won, or fueling stagflation if growth slows.

Im Ki-gon, the acting deputy prime minister in charge of the Planning and Budget Office, chaired a morning inter-ministerial briefing on the Middle East situation. He pledged that ministries would work through the weekend and holidays to prepare the supplementary package and swiftly submit it to the National Assembly.

The Planning and Budget Office outlined the main targets as relief from oil-related logistics and fuel costs, support for households, small businesses, and farmers, and direct aid to exporters vulnerable to external shocks. It asked ministries including the Ministries of Economy and Finance, Science and ICT, Education, Interior and Safety, Culture, Tourism and Sports, Agriculture, Industry and Trade, Health and Welfare, Environment, Employment and Welfare, and Land, Infrastructure and Transport to identify eligible programs.

Officials stressed that the plan would be funded with excess tax revenue rather than new government bonds, a move intended to minimize impacts on bond and foreign exchange markets. Still, the government faces the reality that the already large 2026 budget, coupled with new outlays, could expand the money supply and affect prices and the exchange rate.

Analysts have warned that even without new bond issuance, expanding the budget when the base is already high could lift liquidity and fuel asset-price gains, including housing. In December, broad money supply, or M2, reached 4,080.7 trillion won, up 0.6 percent from November and 4.7 percent year-on-year, with other measures also showing solid growth.

Yonsei University economics professor Kim Jung-sik cautioned that repeated supplementary budgets can widen deficits and prompt more debt issuance, while central-bank bond purchases can further add liquidity, potentially driving up real estate prices and inflation. Jo Won of Hyundai Research Institute urged a focus on stabilizing the vulnerable, such as low-income households, rather than pursuing growth for its own sake.

For U.S. readers, the developments matter because Korea is a leading producer of semiconductors and advanced electronics, tightly linked to global supply chains and capital markets. A significant shift in Korea’s fiscal stance could influence global inflation dynamics, currency trends, and the cost of imported inputs for American tech firms, as well as energy prices if oil markets remain sensitive to Middle East tensions. The episode also demonstrates how Seoul uses targeted fiscal tools to cushion households and exporters from external shocks, with implications for allied economic coordination and security interests.