Goldman Sachs says whether Korea’s AI export windfall can spread to domestic demand hinges on KRW stability and fiscal investment execution

Overview

The report analyzes Korea’s improved terms of trade resulting from higher memory-chip prices amid the AI boom and compares, using a cross-country sample from 2000 Q1 to 2026 Q1, how terms-of-trade shocks transmit to exchange rates, inflation, consumption, and investment. The central conclusion is that Korea is indeed positioned to benefit from the AI export windfall, but whether these gains spread from the export sector to domestic demand and potential growth depends primarily on whether the KRW can stabilize and whether fiscal policy can effectively promote AI-related investment.

Core views

Goldman Sachs believes Korea’s current AI windfall is driven primarily by prices rather than volumes, especially through higher memory-chip prices. In general, manufacturing exporters experience currency appreciation, lower inflation, and higher capital expenditure after an improvement in the terms of trade. However, the KRW has recently weakened even as Korea’s exports and terms of trade have improved sharply, contrary to historical experience. Because exchange-rate pass-through to inflation is relatively strong in Korea, continued KRW weakness could raise import costs, reduce consumers’ purchasing power, compress domestic corporate profits, and widen the divergence between export-oriented and domestic-demand sectors. Over the medium term, the execution of fiscal policy and major AI projects will determine whether trade surpluses can be converted into broader investment and growth.

Analysis framework

The report uses a cross-country case study of terms-of-trade shocks, dividing 32 major economies into manufacturing exporters and resource-based commodity exporters. It examines how changes in the terms of trade affect exchange rates, real private consumption, inflation, and capital expenditure, and maps these empirical patterns onto Korea’s AI-driven semiconductor export cycle.

Methodology notes

• Macroeconomic transmission analysisCross-country comparison of terms-of-trade shocks

  terms-of-trade shock

  The report measures improvements in the terms of trade through changes in export prices relative to import prices and compares their effects on exchange rates, consumption, inflation, and capital expenditure.

• Country case studyComparison between manufacturing exporters and commodity exporters

  exporter transmission channels

  The report distinguishes between resource-based commodity exporters and manufacturing exporters, noting that the former are more likely to drive inflation through procyclical consumption and fiscal policy, while the latter tend to transmit gains through currency appreciation and improved capital expenditure.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• KRW

  Core transmission variable

  Strengths

  If the KRW stabilizes or appreciates, improved terms of trade are more likely to reduce inflation and strengthen domestic purchasing power.

  Weaknesses

  The KRW has recently weakened even as exports and the terms of trade improved, contrary to cross-country experience.

  Comparison

  Manufacturing exporters typically experience currency appreciation after a positive terms-of-trade shock, whereas Korea’s current performance is more anomalous.

  Risks

  Continued KRW weakness could lead to cost-push inflation, weaker consumption, and tighter monetary conditions.

• Korean semiconductor and memory-chip industry

  Primary source of the improvement in AI-driven terms of trade

  Strengths

  A sharp rise in memory-chip prices has significantly boosted exports, the GDP deflator, and nominal GDP.

  Weaknesses

  Current growth is more price-driven; if the price cycle reverses, the terms-of-trade windfall could weaken.

  Comparison

  Unlike Taiwan’s more volume-driven export performance, Korea’s recent export gains have come more from higher prices.

  Risks

  If capacity constraints, investment execution, or global AI demand changes, the growth spillover could fall short of expectations.

• KOSPI

  Korean risk asset affected by AI exports and capital rebalancing

  Strengths

  Improved AI and semiconductor conditions should support earnings expectations and risk appetite in Korea’s equity market.

  Weaknesses

  The report notes that foreign-investor rebalancing following the KOSPI’s rise may be one factor behind KRW weakness.

  Comparison

  The equity market is supported by the export sector, while domestic-demand industries may face pressure from KRW weakness and higher costs.

  Risks

  A widening divergence between export-oriented and domestic sectors could weaken market breadth.

• Korean macroeconomic growth

  Ultimate destination of the AI surplus and fiscal investment

  Strengths

  If major AI projects are implemented successfully, they could drive a recovery in capital expenditure and lift real GDP over the medium term.

  Weaknesses

  Growth spillovers depend on policy execution and cannot be achieved automatically through higher export prices alone.

  Comparison

  Manufacturing exporters are more likely to benefit through capital expenditure rather than primarily through procyclical consumption expansion, as is more common among commodity exporters.

  Risks

  If surplus recycling is insufficient, external surpluses could create macroeconomic imbalances rather than broad-based growth.

Key data

• Korea’s export scaleExpected to exceed US$1 trillion in 2026The report says Korea’s recent export surge has been driven primarily by higher memory-chip prices.
• Memory-chip export growthNearly 150% year over year in the first five months of 2026Nearly 80% of the increase came from a jump in prices.
• Share of semiconductor exportsEquivalent to approximately one-quarter of Korea’s total exports in 2025As of May, semiconductor exports contributed approximately three-quarters of the year-over-year growth in total exports.
• Improvement in terms of tradeImproved 8.6% year over year in 2026 Q1 and approximately 20% in Q2The improvement in the terms of trade primarily drove an increase in the GDP deflator.
• Nominal GDP growth17.1% year over year in 2026 Q1The report says this was the fastest growth rate in 30 years, driven jointly by the GDP deflator and real GDP growth.
• Real GDP growth3.8% year over year in 2026 Q1Together with a double-digit GDP deflator, this drove nominal GDP higher.
• Exchange-rate response of manufacturing exportersA 1-standard-deviation improvement in the terms of trade led to near-term currency appreciation of 0.5% and appreciation of 1% within four quartersThis is an empirical result from the cross-country sample.
• Capital-expenditure response of manufacturing exportersA 10% increase in the terms of trade tends to increase real capital expenditure by 0.9%The panel regression controls for time and country effects.
• Capital-expenditure response of commodity exportersA 10% increase in the terms of trade tends to reduce capital expenditure by 0.6%The report attributes this potentially to excess capacity in resource industries and reverse causality.
• Korea’s exchange-rate pass-through to inflationA 5% KRW depreciation generates approximately 30bp of inflation impactContinued KRW weakness would reduce consumers’ purchasing power and increase pressure for monetary tightening.
• Overseas subsidiary sales in KoreaApproximately 90% of Korea’s domestic direct exportsThis structural change weakens the traditional boost to exports from KRW depreciation.
• Potential macroeconomic impact of major AI projectsCould lift annual real GDP growth by approximately 0.4 percentage points over the medium termIf implemented at the pace of past semiconductor-cluster plans, real capital-expenditure growth could increase by 2–3 percentage points annually.

Impact & implications

The report’s investment implications center on macroeconomic policy and asset transmission. In the short term, KRW stability is key to preventing the AI windfall from being offset by imported inflation and consumption pressures. Over the medium term, fiscal investment and public-private partnership projects will determine whether AI export revenues can be converted into capital expenditure and potential growth. Over the longer term, monetary policy and mechanisms such as the “Future Response Fund” will be needed to recycle external surpluses more effectively, reduce macroeconomic volatility, and broaden the reach of AI-related gains.

Risks

• Continued KRW weakness could cause higher imported inflation and reduce consumers’ purchasing power.
• Monetary policy could be forced to tighten more rapidly, suppressing domestic demand.
• The AI export windfall could remain concentrated in semiconductors and the export sector without spreading to domestic-demand industries.
• Major AI projects could be implemented more slowly than expected, limiting the boost from fiscal investment to capital expenditure and GDP.
• A reversal in the memory-chip price cycle could weaken the improvement in the terms of trade.
• Ineffective recycling of Korea’s external surplus could constrain macroeconomic stability and potential growth.

What to watch

• KRW performance and the Korean authorities’ policy response to exchange-rate stability.
• The Bank of Korea’s monetary-policy path at its July 16 meeting and subsequent meetings.
• The actual implementation pace of Korea’s “3 Mega Projects” and AI infrastructure investment.
• Changes in memory-chip prices and the decomposition of Korean semiconductor export prices and volumes.
• Whether Korea’s terms of trade, GDP deflator, and nominal GDP growth continue to remain elevated.
• Whether the Korean government advances external-surplus recycling mechanisms such as the “Future Response Fund.”