CASE STUDY REPORT

March 2026

~US$100/bblBrent Crude

2%–4%MTI Growth Forecast

1%–2%Core Inflation Target

76 EconomiesUS Tariff Probe Partners

Prepared for Academic & Policy Analysis | Based on The Straits Times, March 13, 2026

Executive Summary

Singapore’s economy faces a rare convergence of two simultaneous external shocks in early 2026: a surge in global energy prices driven by the ongoing Iran-US-Israel conflict and the attendant closure of the Strait of Hormuz, and a dual-track US trade investigation under Section 301 of the Trade Act of 1974 that could expose Singapore-origin exports to tariffs of 25–100 per cent or more. This report examines the background, macroeconomic outlook, specific impacts on Singapore, and policy solutions available to both government and industry.

Key Risk Summary  •  Energy shock: Brent crude near US$100/bbl; natural gas prices doubled  •  Fertiliser disruption: ~1/3 of global seaborne fertiliser passes through Strait of Hormuz  •  US trade probe (excess manufacturing): 16 economies including Singapore; completion by July 2026  •  US trade probe (forced labour): 60 economies including Singapore  •  Singapore goods currently subject to 10% US tariff; could rise to 15%+ or higher under Section 301  •  MTI growth forecast: 2%–4% for 2026; both shocks threaten downside scenarios

1. Case Study Background

1.1 The Iran-US-Israel Conflict and Energy Shock

In early March 2026, a joint US-Israeli military strike against Iran escalated into a full-scale confrontation. Iran’s newly appointed supreme leader responded by closing the Strait of Hormuz, the world’s most critical oil and gas chokepoint, through which approximately 20 per cent of global oil trade and significant volumes of LNG normally pass. The strategic closure has produced an immediate and severe spike in global energy prices.

Indicator	Status / Value
Brent Crude Oil	~US$100/barrel (as of March 13, 2026)
Natural Gas Prices	Approximately doubled from pre-conflict levels
Strait of Hormuz	Closed by Iran; rerouting via Cape of Good Hope required
Singapore Petrol (95-oct)	S$3.45/litre (up S$0.10 on March 13 alone)
Seaborne Fertiliser Share	~1/3 of global supply disrupted at source
Urea (Key Fertiliser)	Price up ~30% since conflict began

The closure forces vessels to reroute around the Cape of Good Hope, adding thousands of nautical miles to voyages originating in the Persian Gulf. As the Minister of State for Trade and Industry noted, this translates into higher costs, longer lead times, and supply chain dislocations for Singapore’s wholesale trade sector — which contributes approximately 20 per cent of nominal GDP and encompasses over 50,000 firms.

1.2 The US Section 301 Trade Probes

On March 11, 2026, the US Trade Representative (USTR) launched a Section 301 investigation into alleged excess manufacturing capacity among 16 trading partners, including Singapore. A second probe was initiated on March 12 into 60 economies — again including Singapore — over alleged failures to address forced labour practices. Section 301 of the Trade Act of 1974 authorises tariffs of 25 per cent to over 100 per cent on goods from economies deemed to engage in unfair trade practices.

These probes constitute the Trump administration’s ‘Plan B’ following the US Supreme Court’s February 20, 2026 ruling that dismantled the sweeping ‘reciprocal’ tariff framework. By pivoting to the more durable Section 301 mechanism, the USTR seeks to establish firmer legal grounding for tariffs before the temporary Section 122 global 10 per cent rate expires in July 2026.

Singapore’s Contested Position on the Trade ProbeThe USTR’s Federal Register Notice cited Singapore as having a bilateral goods-and-services surplus of US$27 billion with the US in 2024.However, Singapore’s Ministry of Trade and Industry (MTI) countered that the US Bureau of Economic Analysis — a federal agency — records Singapore as running a bilateral DEFICIT of approximately US$27 billion with the US in 2024.MTI also contested claims about low industrial occupancy, noting that Singapore’s industrial space occupancy rate stands at approximately 90%, consistently healthy.Singapore has formally submitted this data to the USTR and is seeking clarification.

Despite the apparent factual basis for Singapore’s defence, analysts caution that negotiating with the Trump administration is a protracted exercise even when the evidence is on one’s side. The USTR probe is expected to conclude by July 2026.

1.3 Current Tariff Exposure

Tariff Category	Rate / Scope
Current Section 122 Global Rate	10% on Singapore goods to US
Projected Near-Term Escalation	Possible increase to 15% before July expiry
Current Exemptions	Pharmaceuticals, semiconductors (at risk)
Section 301 Potential Tariff	25%–100%+ on targeted goods categories
Probe Completion Deadline	July 2026

2. Economic Outlook

2.1 Inflation Trajectory

Before the dual shock materialised, Singapore’s core inflation in 2025 stood at 0.7 per cent. The official 2026 forecast already incorporated some upward pressure, projecting core inflation of 1–2 per cent. Both the energy shock and the tariff escalation threaten to push this figure significantly beyond the upper bound.

The transmission mechanism of higher energy prices to general inflation operates through multiple channels simultaneously:

• Direct fuel cost: Transport and logistics costs rise as higher crude oil prices increase the cost of diesel, jet fuel, and marine bunker fuel.
• Electricity: Electricity tariffs rise in tandem with natural gas prices, increasing production costs across all industries.
• Food supply chain: Fertiliser prices surge due to the dual impact of higher natural gas feedstock costs and disrupted Strait of Hormuz supply, pushing agricultural input costs higher globally.
• Seasonal amplification: If the conflict persists through the spring planting season, food price inflation will accelerate, disproportionately affecting lower-income households.

Inflation Risk Scenarios  BASELINE: Conflict resolves within weeks, Brent retreats to US$80–85/bbl, core inflation stays within 1–2%  ADVERSE: Conflict persists 3–6 months, Brent sustains US$95–105/bbl, core inflation reaches 2.5–3.5%  SEVERE: Prolonged closure of Strait + Section 301 tariffs applied, supply chain disruption compounds; core inflation exceeds 4%, GDP growth falls below 2%

2.2 Growth Outlook

MTI’s official 2026 GDP growth forecast stands at 2–4 per cent. Both shocks introduce downside risk to this range through distinct but complementary channels:

Shock	Growth Impact Mechanism
Energy price surge	Reduces disposable income, raises operating costs, suppresses global demand
Strait of Hormuz closure	Disrupts wholesale trade sector (20% of nominal GDP); raises logistics costs
US tariff escalation (Section 122)	Reduces competitiveness of Singapore goods in US market
Section 301 tariffs (if applied)	Could sharply curtail US-bound exports; risk of exemption removal for semiconductors/pharma
Global demand contraction	Indirect hit as trading partners face simultaneous inflationary and tariff pressures

Singapore’s export-oriented economic model renders it particularly vulnerable to demand destruction in key markets. The US is a major destination for Singapore’s high-value goods, including electronics, pharmaceuticals, and refined petroleum products. An escalation to Section 301 tariff levels would structurally alter trade economics for these categories.

2.3 Fertiliser, Food Prices, and Social Implications

Natural gas constitutes approximately 70 per cent of the feedstock for global ammonia production, the foundation of all nitrogen-based fertilisers. With natural gas prices having doubled and supply chain routes through the Strait of Hormuz severed, fertiliser producers worldwide are reducing output or shutting down plants entirely. Urea, the most widely traded fertiliser, has already increased by approximately 30 per cent.

The Carnegie Endowment for International Peace draws explicit parallels to Russia’s 2022 Ukraine invasion, which similarly disrupted fertiliser supply and generated cascading food inflation globally. The current disruption is occurring precisely during the spring planting season in the Northern Hemisphere, amplifying its agricultural impact. For Singapore — which imports approximately 90 per cent of its food — this translates into upward pressure on grocery prices, with the most acute effects felt by lower-income households.

3. Singapore-Specific Impact Assessment

3.1 Macroeconomic Dashboard

2%–4%GDP Growth (Official)

1%–2%Core Inflation (Official)

~20%Wholesale Trade / GDP

~90%Food Import Dependency

3.2 Sectoral Impact Analysis

Sector	Impact Assessment
Wholesale Trade	HIGH — 50,000+ firms exposed to higher logistics costs, supply chain disruption, and longer voyage times via Cape rerouting
Retail & Consumer	HIGH — Food price inflation imminent; fuel and electricity cost pass-through to consumer prices
Electronics / Semiconductors	ELEVATED — Currently tariff-exempt but exemptions are at risk; critical US market dependency
Pharmaceuticals	ELEVATED — Exempted from current 10% tariff but probe scope creates uncertainty
Petrochemicals / Refining	HIGH — Crude input costs have risen sharply; Jurong Island complex exposed to energy cost inflation
Aviation & Logistics	HIGH — Higher jet fuel costs impacting SIA and regional carriers; 15+ additional Singapore-Europe flights added in March to reroute around Middle East
Construction & Real Estate	MODERATE — Higher steel, cement, and energy input costs; project cost inflation expected
Food & Beverage	HIGH — Fertiliser price spike flows through to agricultural commodity costs; import-dependent economy

3.3 Trade and Investment Climate

Singapore’s status as a regional trading hub and financial centre is deeply interconnected with stable, rules-based global trade. The simultaneous challenge of an opaque and shifting US tariff regime alongside geopolitical disruption to critical shipping lanes creates an unusually difficult environment for investment planning and business forecasting.

Of particular concern is the data dispute at the heart of the US manufacturing capacity probe. Singapore’s position — backed by the US Bureau of Economic Analysis’ own figures — suggests a factual error in the USTR’s notice. However, as DBS Bank’s research note highlights, the legal pivot to Section 301 appears motivated by the need to rebuild tariff architecture on firmer legal footing post-Supreme Court ruling, potentially making factual rebuttals insufficient to avoid tariff exposure.

Singapore’s Structural Vulnerabilities in Context  1.  Open Economy: Trade-to-GDP ratio exceeds 300%; any disruption to global trade flows has outsized impact  2.  Energy Import Dependency: Singapore produces no oil or gas domestically; all energy is imported  3.  Food Import Dependency: ~90% of food is imported; Singapore is acutely exposed to global food price shocks  4.  US Market Concentration: US is among Singapore’s top export destinations for high-value manufactured goods  5.  Hub Status at Risk: Strait of Hormuz disruptions increase costs that undermine Singapore’s position as a low-friction trade hub

4. Policy Solutions and Strategic Responses

4.1 Government-Level Policy Responses

Energy Security and Supply Diversification

• Short-term: Singapore GasCo is already authorised to procure additional LNG cargoes as needed (confirmed by EMA). This should be accelerated, with strategic reserves expanded to buffer against prolonged Strait closure.
• Short-term: Accelerate review of electricity tariff support mechanisms for SMEs and lower-income households most exposed to energy cost pass-through.
• Medium-term: Diversify LNG supply contracts across Atlantic basin and Australian suppliers to reduce Gulf region concentration risk.
• Long-term: Expand domestic renewable energy capacity (solar, regional power grids) to structurally reduce exposure to fossil fuel price volatility.

Trade Diplomacy and Tariff Mitigation

• Immediate: Maintain active, high-level diplomatic engagement with USTR backed by comprehensive data package correcting the Bureau of Economic Analysis discrepancy.
• Short-term: Pursue a bilateral framework agreement with the US that formalises Singapore’s trade deficit status and secures sector-specific carve-outs for semiconductors, pharmaceuticals, and refined petroleum.
• Medium-term: Coordinate with ASEAN partners similarly affected by Section 301 probes to present a unified factual rebuttal and negotiate collectively where possible.
• Immediate: Actively monitor and engage the Section 122 extension process to prevent rate escalation from 10% to 15% prior to July 2026 expiry.

Fiscal and Monetary Policy Measures

• Inflation response: MAS should signal readiness to tighten monetary policy through SGD NEER appreciation if inflation overshoots significantly, as a relatively strong SGD lowers the import cost of energy and food.
• Social protection: The government should stand ready to deploy targeted fiscal support — cost-of-living assistance for lower-income households, energy rebates — if food and fuel inflation accelerates beyond official forecasts.
• Contingency measure: Consider temporary GST relief on basic food categories if food price inflation becomes severe, drawing on Singapore’s substantial fiscal reserves.

4.2 Industry-Level Strategic Responses

Supply Chain Resilience

• Procurement: Firms reliant on Gulf-origin inputs should urgently audit supply chains and identify alternative sourcing routes, holding greater buffer inventory for critical materials.
• Logistics: Logistics firms and traders should renegotiate freight contracts to account for Cape of Good Hope rerouting surcharges; route diversification should be built into standard operating procedures.
• Export strategy: Manufacturers with US export exposure should evaluate partial production relocation or order fulfilment through jurisdictions with more favourable US tariff treatment (e.g., FTA partners).

Financial Hedging

• Energy hedging: Companies with significant energy cost exposure should implement structured hedging programmes using Brent crude futures and LNG derivatives to lock in input costs.
• Currency hedging: Exporters to the US should review USD/SGD currency hedging positions given potential demand-side shocks to US-bound revenue streams.
• Scenario planning: Businesses should stress-test balance sheets against a scenario of sustained Brent at US$100–110/bbl and 25% Section 301 tariffs on primary product categories.

Market Diversification

• Export markets: Accelerate market diversification away from US dependency, deepening penetration in Southeast Asia, India, and the Middle East (post-conflict) for manufactured goods.
• Trade agreements: Leverage CPTPP, RCEP, and the EU-Singapore FTA to ensure alternative high-value market access is operationally ready if US tariffs make that market uneconomical.

4.3 Food Security Measures

• Domestic production: The Singapore Food Agency (SFA) should accelerate the 30×30 goal (produce 30% of nutritional needs locally by 2030) with emergency budgetary prioritisation.
• Import diversification: Diversify food import sources away from fertiliser-dependent agricultural regions most affected by current supply disruptions.
• Regional cooperation: Engage regional food security mechanisms under ASEAN to build coordinated food buffer stockpile arrangements.

5. Conclusion

Singapore faces a rare and serious confluence of two independent but mutually reinforcing external shocks. The energy crisis originating from the Iran conflict threatens inflation, supply chain costs, and food security simultaneously. The US trade probe introduces structural uncertainty into Singapore’s export architecture at a moment when the global rules-based trading system is already under significant stress.

What makes the current situation particularly challenging is the high degree of uncertainty around resolution timelines for both shocks. The Iran conflict’s endpoint remains opaque, with Iran’s leadership signalling continued escalation. The US tariff process, while operating within a defined legal framework, is subject to political unpredictability that has confounded even well-prepared negotiating partners.

Singapore’s best defence lies in its traditional strengths: robust fiscal reserves, nimble economic policy, credible diplomatic engagement, and a highly adaptable private sector. The government’s prompt factual challenge to the USTR’s data, combined with proactive LNG procurement and targeted fiscal readiness, reflects the kind of responsive governance that has historically allowed Singapore to navigate external shocks without lasting structural damage.

The critical variable is time. The longer either shock persists, the deeper the economic scarring. Swift diplomatic resolution of the Iran conflict and a successful data-driven rebuttal of the US trade probe represent the most favourable near-term scenario. Policy and business communities should nevertheless plan for the adverse and severe scenarios outlined in this report.

Key Indicators to Monitor  •  Brent crude price trajectory — key threshold: sustained above US$100/bbl for >30 days  •  Strait of Hormuz reopening status — each week of closure multiplies fertiliser and LNG impact  •  USTR investigation timeline and interim findings — watch for July 2026 deadline  •  MAS monetary policy statement — SGD NEER stance signals inflation tolerance threshold  •  MTI GDP revision — any downward revision from the 2%–4% range signals shock absorption failure  •  Global food commodity indices — especially urea, wheat, and palm oil prices