With this year's tax revenue windfall projected to exceed 60 trillion won ($43 billion), South Korea's economic policymakers face a trilemma — a situation in which three policy goals collide. Accelerating fiscal expansion on the back of the windfall would support growth, but it would put the government at odds with the Bank of Korea, which has begun tightening to rein in inflation. With government bond yields surging worldwide, a substantial camp argues that fiscal buffers should be reinforced first. Experts stress that because the economy is in an expansionary cycle, a finely calibrated policy mix is needed — pacing the disbursement of the windfall and actively channeling part of it into debt repayment.
Inflation is the most immediate constraint. Consumer prices rose 3.1% in August from a year earlier. Core inflation, which excludes food and energy, reached 3.4%. "The Bank of Korea is raising rates while the government is moving in the opposite direction by sharply expanding fiscal spending," Kim Woo-chul, president of the Korean Association of Public Finance, said on the 27th. "If fiscal loosening stimulates aggregate demand again, it could wipe out the effect of the rate increases the central bank has delivered so far." Experts say that if prices begin to climb in earnest, the central bank could be forced into additional rate hikes it does not want.
Where the roughly 60 trillion won in windfall revenue goes is another key question. The current National Finance Act allows windfall revenue to be used to repay deficit-financing bonds already issued. But the amendment the government submitted to the National Assembly would also permit transfers to the Future Response Fund. In theory, that means the money could be placed in the fund and spent on fiscal expansion instead of paying down debt.
The Future Response Fund will launch next year at 162.3 trillion won, built mainly around "additional revenue" — the portion of 2027 internal tax revenue projected to exceed the trend line of the past decade. If this year's separate 60 trillion won-plus windfall were transferred in full, the fund's resources could arithmetically swell beyond 222 trillion won. The government maintains, however, that windfall revenue moved into the fund would not immediately be released as program spending.
But money parked as reserves is not unrelated to future spending. The thicker the pool of resources, the greater the capacity to support program expansion or new budget lines — and the stronger the pressure to convert it into actual outlays. Under the government's bill, spending on the fund's major line items could be adjusted within a range of up to 30% without submitting a revised fund management plan to the National Assembly, a wider margin than the 20% allowed for ordinary non-financial funds. In particular, matching grants for local government accounts could be carried over for up to three years if unavoidable circumstances prevent execution. As discretion over fund management widens, concerns are being raised about weakened parliamentary oversight.
Kim's own classification of the fund's 140 detailed programs found that capital formation and human capital investment accounted for 19.01 trillion won, or 41.9%, of the 45.36 trillion won in program spending. Spending that broadens the foundation for future growth thus falls short of half. Programs in the nature of current transfers, cash payments and vouchers — including basic income for farming and fishing communities, basic child allowances and youth culture and arts passes — totaled 8.96 trillion won, or 19.8%. Such spending lifts aggregate demand more in the short term than supply-side investment in areas like artificial intelligence, power grids and research and development.
"Expanding spending in an expansionary phase using windfall revenue as the funding source is a textbook case of procyclical fiscal policy," said Park Jun-woo, an analyst at Hana Securities. "Even if the multiplier is low, the direction is toward stoking overheating and price pressure." With the 10-year treasury bond yield recently climbing to the mid-4% range, the analysis holds that fiscal expansion could constrain declines in long-term rates if it pushes up growth and inflation forecasts.
Experts argue that revenue that swells temporarily during a boom should be set aside for debt repayment or held as reserves rather than immediately funneled into higher spending, and then drawn on when the economy slows. When the central bank is raising rates, they say, fiscal policy should also pace its spending so as not to stimulate aggregate demand further — aligning the intensity of fiscal and monetary policy in a coherent policy mix.
For that principle to work, the criteria for when and how much to set aside and withdraw must be established in advance. The Future Response Fund does not sufficiently specify objective withdrawal requirements tied to economic and revenue conditions, or obligations to replenish reserves.
Abroad, Ireland separates long-term saving for future generations, response to short-term shocks and domestic strategic investment into distinct funds, while Chile sets accumulation and withdrawal criteria based on trend variables such as the business cycle and copper prices. Because Korea has placed fiscal stabilization and strategic investment in a single fund, observers say the conditions and limits for converting reserves into program spending need to be defined more clearly.
"When monetary tightening sharply contracts domestic demand, fiscal policy needs to play a complementary role, but I don't think we are in a situation that requires large rate increases right now," said Kim Jung-sik, professor emeritus of economics at Yonsei University. "If fiscal policy expands excessively in this environment, both liquidity and upward pressure on interest rates will build, and rising interest burdens could dampen consumption and investment. Ultimately, what matters is combining fiscal and monetary policy so they do not move too far in opposite directions, while keeping an eye on growth, prices and financial stability together."
