Where the extra spending comes from
The Cabinet approved a 2027 budget that lifts spending 12.8 per cent to 820.9 trillion won, 93 trillion won above this year's 727.9 trillion won plan. Total revenue is set at 880.8 trillion won, and national tax revenue is projected to rise 49.8 per cent to 584.4 trillion won from 390.2 trillion won, on corporate and income tax receipts that Park Hong-keun attributes to the semiconductor boom.[1]
Start by dropping the reading in which a record spending number is by itself a large fiscal impulse. Look at the flows: the managed deficit narrows to 3.1 trillion won, 0.1 per cent of GDP, and new bond issuance is cut by 12.5 trillion won. The state spends more and injects less, because the extra spending is drawn out of income the corporate sector has already earned before any of it comes back. The other reading is that composition carries the work, since 21.3 trillion won for semiconductors, physical AI and data centres adds capacity alongside demand.[1]
The revenue and the shipment are one flow
August exports came to 98.25 billion dollars, up 68.7 per cent, with semiconductor shipments at 46.65 billion dollars, up 209 per cent and above 40 billion dollars for a third consecutive month. Imports rose 22.6 per cent to 63.51 billion dollars, leaving a trade surplus of 34.75 billion dollars. Kim Jung-kwan put growth in non-semiconductor shipments at 20 per cent.[2]
A trade surplus of 34.75 billion dollars in a single month means the rest of the world ran a matching deficit against the country, and that surplus is the income from which the corporate and income tax receipts in the 2027 budget are drawn. The tax base and the shipment series are one flow measured at two points, so the fiscal room the budget spends is a claim on an external surplus concentrated in one product line. An alternative worth weighing: the 20 per cent growth outside semiconductors that Kim Jung-kwan points to is the base broadening under the same revenue, and it is measurable month by month.[1], [2]
What the plan already assumes
Growth and a deficit are two sides of one account, as I argued about Colombia's second quarter, and the same identity now reads the fiscal room in the budget Park Hong-keun presented. Here the account runs the other way: a near-balanced budget at 0.1 per cent of GDP alongside a large external surplus leaves the domestic private sector, rather than the state, holding the net financial assets the year creates.[1], [3]
The plan does not lean on the surge lasting. It puts national tax revenue growth at about 3 per cent from 2028 and the managed deficit at 1.5 per cent, 2.5 per cent and 2.9 per cent of GDP in 2028, 2029 and 2030, and it places 162.3 trillion won in a Future Response Fund, of which 45.4 trillion won is allocated and the rest held against sharp swings in receipts. If monthly semiconductor exports fall below 40 billion dollars and stay there for two consecutive months before 30 June 2027, that revenue slowdown arrives earlier than the plan schedules it; the monthly release from the Ministry of Trade, Industry and Resources is where that shows.[1], [2]