The International Monetary Fund (IMF) projects South Korea’s government debt-to-GDP ratio will rise to 56.6% in 2027, marking a significant increase from current levels and reflecting growing fiscal pressures amid slowing economic growth and rising social welfare expenditures.
According to the IMF’s latest Fiscal Monitor report released in April 2026, South Korea’s general government gross debt is expected to climb steadily over the next few years, driven by persistent budget deficits and demographic challenges. The projected 56.6% debt-to-GDP ratio for 2027 represents an increase of approximately 8 percentage points from the 48.7% recorded in 2024, based on data from the Bank of Korea and the Ministry of Economy and Finance.
The IMF attributes the rising debt burden primarily to increased spending on healthcare, pensions and long-term care, as South Korea faces one of the world’s fastest-aging populations. By 2027, more than 20% of the population is projected to be aged 65 or older, up from 18.2% in 2024, intensifying pressure on public finances.
Despite the upward trend, the IMF notes that South Korea’s debt level remains relatively moderate compared to other advanced economies. The average government debt-to-GDP ratio among G20 advanced economies is projected to exceed 110% in 2027, leaving South Korea well below peers such as Japan (over 250%), the United States (around 120%), and Italy (approximately 140%).
Nonetheless, the Fund cautions that without structural reforms, the trajectory could worsen. The IMF recommends targeted measures to enhance fiscal sustainability, including gradual increases in the retirement age, reforms to pension benefit formulas, and efforts to boost labor force participation among women and older workers.
South Korea’s Ministry of Economy and Finance acknowledged the IMF’s projections in a statement issued on April 17, 2026, emphasizing that the government remains committed to fiscal prudence. The ministry highlighted ongoing efforts to improve spending efficiency, expand the tax base through digital economy taxation, and manage off-budget liabilities linked to public enterprises and local governments.
Analysts at the Korea Development Institute (KDI) echoed concerns about long-term fiscal risks but noted that South Korea’s strong export-driven economy and high household savings rate provide buffers against external shocks. However, they warned that rising debt could limit fiscal space for future stimulus during economic downturns if not managed carefully.
The IMF’s projection comes as South Korea navigates a period of subdued growth, with real GDP expanding at an average annual rate of 1.8% between 2023 and 2025, below the potential growth rate of 2.2% estimated by the Bank of Korea. Weak global demand, particularly in semiconductors and display panels, has weighed on exports, a traditional engine of growth.
Looking ahead, the government’s 2026–2027 fiscal plan, submitted to the National Assembly in February 2026, targets a gradual reduction in the budget deficit from 3.1% of GDP in 2025 to 2.4% by 2027. Achieving this goal will depend on sustaining tax revenues while containing growth in mandatory spending, a balance the IMF says will require careful policy calibration.
South Korea’s government debt remains predominantly denominated in domestic currency and held by local investors, reducing vulnerability to external shocks or currency fluctuations. Over 80% of government bonds are held by domestic entities, including banks, insurance companies, and the National Pension Service, according to the Financial Supervisory Service.
While the rising debt ratio warrants attention, the IMF concludes that South Korea maintains strong institutional capacity to manage its fiscal challenges, citing its track record of economic resilience, low corruption levels, and effective macroeconomic policymaking. Continued monitoring and timely adjustments will be key to ensuring long-term debt sustainability without undermining growth prospects.