Assessing the Oil Shock's Impact on Emerging Market External Balances

The recent spike in oil prices has delivered a sharp shock to emerging markets, directly worsening their external balances and pressuring currencies. Brent crude futures surged 7.2% to $83.36 a barrel by midday on March 3, touching a high of $85.12-the highest level since July 2024. This move was driven by escalating conflict in Iran, including the effective closure of the Strait of Hormuz and threats of further attacks on shipping lanes. The immediate market reaction was a flight to safety, with global financial markets rattled and emerging market equities and currency indexes falling to three-week lows.

The impact on currencies was swift and severe. Among the hardest hit were the Philippine peso and Taiwan's dollar, which fell the most in Asia trading. This depreciation is a direct consequence of the oil shock, as higher import bills for fuel strain current accounts and increase demand for dollars to pay for those imports. The pressure is now shifting from inflation-a known risk-to a more fundamental stress on external balances.

Quantitatively, the exposure is significant. Analysts at ING note that a mere 10% rise in oil prices can deteriorate current account balances for emerging markets by 40-60 basis points. For countries like Thailand, South Korea, Vietnam, Taiwan, and the Philippines, which are heavily dependent on oil imports, this translates to a material widening of deficits. Goldman Sachs estimates that a supply-driven jump in Brent from $70 to $85 would not only add to inflation but also widen current account deficits across almost every economy in the region, particularly in Thailand, Singapore, and South Korea. The bottom line is that the oil price surge has moved from a headline inflation concern to a tangible pressure on the current account, with the most exposed economies facing immediate currency vulnerability.

The Mechanics of the External Balance Strain

The oil price shock translates into tangible pressure on emerging markets through a clear chain of events: higher import bills worsen trade balances, which strains fiscal resources and increases vulnerability to capital outflows. The most exposed economies are those with deep reliance on imported oil, particularly from the Middle East. For countries like Japan and the Philippines, over 90% of their oil imports come from the region. Any disruption to key shipping lanes like the Strait of Hormuz directly threatens their energy security and amplifies the economic impact of higher prices. For nations with fuel subsidy programs, the strain hits the fiscal balance directly. Indonesia provides a clear example. The government maintains a fixed domestic fuel price, which has helped contain subsidy costs during periods of lower global prices. However, as Brent crude climbs, the gap between the administered price and the market cost widens, forcing the government to cover larger losses. This is a direct fiscal drain, diverting resources from other spending and increasing the budget deficit. The risk is that sustained high oil prices could force a subsidy cut or price hike, triggering political and social costs.

The resulting deterioration in external balances then feeds back into currency markets. A widening current account deficit increases the demand for foreign exchange to pay for imports, putting downward pressure on the local currency. This dynamic is already visible in Indonesia, where the 5-year credit default swap (CDS) spread has moved above 80 basis points. This elevated risk premium signals that investors are demanding more compensation for the perceived increase in default risk, which is tied to the country's deteriorating external position. The currency weakness that follows further amplifies the problem, as it makes imported oil even more expensive in local terms, creating a vicious cycle.

The bottom line is that the oil shock is a multi-pronged stress test. It hits the trade balance through higher import bills, pressures the fiscal balance via subsidy costs, and increases the risk of capital outflows and currency depreciation. For the most vulnerable emerging markets, this combination threatens to undermine economic stability and limit policy options.

The Duration-Dependent Risk Spectrum

The immediate pressure on emerging markets is clear, but the severity of the strain hinges critically on how long the conflict lasts and whether the Strait of Hormuz remains closed. A short-term flare-up could see prices peak and retreat, limiting the damage. However, a prolonged closure of the strait would force a major, costly reallocation of global oil flows and sustain higher prices for months, deepening external imbalances across the region.

The most vulnerable countries are those with high oil import dependence and limited fiscal space to absorb the shock. Analysts at ING identify Thailand, South Korea, Vietnam, Taiwan and the Philippines as the most exposed, with a 10% oil price rise alone deteriorating their current account balances by 40-60 basis points. This vulnerability is compounded by the fact that for nations like the Philippines and Japan, over 90% of their oil imports come from the Middle East. Any sustained disruption to this supply chain directly threatens their energy security and widens trade deficits.

The risk of broader regional escalation represents a major upside shock. If the conflict spills over into neighboring countries and targets oil infrastructure, prices could spike dramatically. Analysts have warned that prices could top $100 a barrel under such prolonged disruption, with some estimates suggesting a scenario could push crude toward $108 per barrel. This would not only worsen inflation and growth but would force a complete reassessment of external balances for the entire region.

For now, the market is in a wait-and-see mode, with some investors hedging against a short-lived conflict. Yet the setup is precarious. The initial selloff in EM equities and currencies has been sharp, and the pressure is now shifting from inflation to a more fundamental stress on current accounts. The bottom line is that the duration of the conflict and the status of the Strait of Hormuz will determine whether this is a temporary setback or a sustained crisis for emerging market external balances.

Catalysts and Scenarios for the External Balance

The path for emerging markets now hinges on a few critical variables that will determine whether the current account strain becomes a sustained crisis or a temporary setback. The primary catalyst is the duration of the conflict and the status of the Strait of Hormuz. A prolonged closure would force a major, costly reallocation of global oil flows and sustain higher prices for months, deepening external imbalances across the region. Analysts have warned that prices could top $100 a barrel if oil trade is disrupted for a prolonged period, with some estimates suggesting a scenario could push crude toward $108 per barrel. This would not only worsen inflation and growth but would force a complete reassessment of external balances for the entire region.

A critical offset to this pressure is the response from OPEC+. The group has already taken steps to stabilize the market, with OPEC+ raising its crude production levels in recent days. Increased output from Saudi Arabia and other members could help ease supply tightness and cap the price rally. This move is a direct attempt to prevent the kind of sustained spike that would inflict maximum damage on emerging market trade balances. The effectiveness of this response will be key; if it is sufficient to bring prices down from their recent highs, it could mitigate the worst of the external stress.

Yet the risk of broader regional escalation remains a major upside shock. If the conflict spills over into neighboring countries and targets oil infrastructure in Gulf countries, the supply disruption would be far more severe. This scenario, which includes attacks on energy facilities, would likely trigger a panic in markets and drive prices even higher. The initial market reaction shows some resilience, with traders noting "The crude market is extremely measured... I don't see panic out there.", but that could change quickly if the war expands. For now, the setup is precarious, with the market in a wait-and-see mode, but the potential for a major price spike if the conflict escalates is a constant threat to external stability.