South Korea has proposed a record US$596.9 billion budget for 2027, combining expanded AI and semiconductor investment with fiscal room created by a semiconductor-driven tax windfall1,2,4.
The proposal represents a 12.8% increase from 2026, the largest year-on-year rise in government expenditure on record. The spending plan reflects the economic policy direction of President Lee Jae-myung's administration. The budget still requires parliamentary approval.
A chip tax windfall underpins the fiscal expansion. Total tax revenue is projected to increase 40.7% in 2027 to US$425.9 billion, with corporate tax receipts expected to more than double to US$157.9 billion. Net bond issuance is projected to fall by US$9.5 billion to US$70.2 billion, down from US$79.7 billion in 2026, while total government bond sales are expected to decline to US$162.4 billion from US$164.5 billion in the current year's budget. South Korea's debt-to-GDP ratio is estimated to decline by 3.3 percentage points to 48.3% in 2027.
Within the budget, Park Hong-keun said the government has earmarked US$1.9 billion for a special semiconductor budget. The government also plans to establish a strategic endowment called the Future Response Fund, which will deploy US$33.1 billion toward youth welfare, future growth engines, and specialized education programs in 2027. An additional US$15.5 billion has been allocated for industrial water systems, power grids, and logistics networks.
South Korea's 10-year government bond yield increased by 6.5 basis points to 4.378% after the budget announcement. President Lee said Tuesday that the economy has reached a point where an interest rate increase is unavoidable.
ANALYSIS The budget structure pairs direct technology spending, such as the US$1.9 billion semiconductor earmark, with broader infrastructure and workforce investments through the Future Response Fund. The semiconductor tax windfall financing the expansion means the AI and chip push is, in effect, self-reinforcing: chip-sector profits fund the fiscal space for further chip-sector investment.
The declining debt-to-GDP ratio and lower net bond issuance distinguish this expansion from deficit-driven stimulus, giving the government room to sustain elevated technology spending without immediate fiscal strain.