Since late February 2026, the Strait of Hormuz crisis has been a clear reminder of how quickly macro disruptions become credit events. Iranian restrictions on shipping have shut in more than 14 million barrels per day of global crude supply.[1] Brent crude surged from approximately $85 before the crisis to a peak of $138 per barrel on 7 April 2026, settling around $109 per barrel by May as limited tanker traffic slowly resumed.[2]
That energy shock rippled through South Africa’s credit markets in three distinct channels: fuel price compression, building material inflation, and currency weakness. Understanding these channels is essential for lenders managing exposure across the economy.
CHANNEL 1: FUEL PRICE COMPRESSION ON TRANSPORTATION AND LOGISTICS
South Africa’s fuel price is set monthly on an import parity formula administered by the Central Energy Fund.[3] International crude disruptions feed into local pump prices within 30 days. May’s fuel hike was significant. For borrowers relying on fuel price stability, including fuel station operators, logistics companies and construction contractors, the impact is immediate.
Fuel typically accounts for an estimated 15–20% of operating expenses in logistics and construction businesses.[4] South Africa’s pump prices rose sharply following the crude surge, and even a moderate fuel cost increase translates directly to operating margin compression. Borrowers with tight DSCR assumptions face breach risk. Borrowers with flexible pricing models can pass costs through to customers, though they face volume risk if customers respond by deferring spending.
This dynamic is worth monitoring. Fuel price volatility is structural in an era of geopolitical instability.
CHANNEL 2: BUILDING MATERIALS COST INFLATION
Brent crude drives more than just diesel. Bitumen, plastics, adhesives, and raw materials for building products all track oil prices. When Brent spikes, construction input costs follow within 4–8 weeks.
This affects two borrower cohorts:
Hardware and building materials retailers face input cost pressure on oil-sensitive items: paint, plumbing fittings, insulation and roofing materials. When wholesale costs rise, retailers must choose between absorbing the hit through margin compression, or passing costs to customers and accepting volume risk.
Property developers and construction contractors relying on stable material costs face project margin erosion. Fixed-price contracts, which are especially common in government tendering, become particularly vulnerable. A sudden cost spike can wipe out entire project margins.
This risk is material for construction-heavy credit portfolios.
CHANNEL 3: CURRENCY PRESSURE ON IMPORT-DEPENDENT INDUSTRIES
When global oil markets spike, emerging market currencies typically weaken. Risk-off sentiment, rising USD funding costs, and technical selling all pressure ZAR. The rand-dollar relationship is particularly sensitive to crude disruptions.
This affects any business relying on imports: clothing retailers, electronics distributors, industrial machinery importers and consumer goods wholesalers. For these borrowers, a 7% rand depreciation could translate to 5–10% margin compression where inputs are 40–60% imported.
Import-dependent borrowers face both input cost inflation (from crude spike) and currency headwinds. Unhedged USD exposure becomes a material credit risk.
THE OFFSETTING OPPORTUNITY: ENERGY AND LPG SUPPLY
Not all impacts are negative. The same Brent spike that compresses construction margins benefits energy suppliers and LPG distributors.
South Africa faces a significant energy transition in 2028. Sasol’s piped gas supply, sourced almost entirely from Mozambique’s Pande and Temane fields, is scheduled to end in July 2028 with no permanent replacement secured.[5] LPG substitution is accelerating as industrial and commercial users switch from piped gas to LPG tanks. Elevated Brent crude prices make locally supplied LPG increasingly competitive against imported alternatives.
This supports sustained demand growth for energy distribution, LPG supply and renewable energy alternatives. For lenders, the energy sector offers both near-term upside from elevated crude prices and longer-term growth driven by the 2028 gas transition.
MACRO RISK IN CONTEXT
Oil shocks are not unprecedented. But they reveal important principles about credit and portfolio management:
Macro disruptions become credit events quickly. A near-doubling of crude prices over a matter of weeks, as the 2026 Hormuz crisis demonstrated, is historically rare. When it happens, it separates disciplined credit managers from reactive ones.
Portfolio composition matters. Exposure to oil-sensitive sectors (logistics, construction, materials retail) creates elevated DSCR risk during crude spikes. Energy and renewable energy exposure offsets some of that risk.
Covenant frameworks matter. Borrowers without COLA (Cost of Living Adjustment) triggers, FX hedging disclosure, or inflation covenants face breach risk in volatile environments. Rigid covenant structures are risky in volatile markets.
SECTOR ROTATION IMPLICATIONS
The Strait of Hormuz disruption illustrates why disciplined lenders maintain active sector rotation in their origination:
- Prioritise sectors with sustained demand and government backing
- Tighten standards in cyclical sectors vulnerable to commodity inflation
- Monitor covenant adequacy
- Maintain active portfolio review as macro conditions evolve
Volatility in energy markets creates both risk and opportunity. Lenders who track it closely are better placed to act on both.
SOURCES
[1] IEA Oil Market Report, May 2026. iea.org/reports/oil-market-report-may-2026
[2] EIA Short-Term Energy Outlook, May 2026. eia.gov/outlooks/steo; Fortune, ‘Current price of oil’, May 2026.
[3] Department of Mineral Resources and Energy (DMRE); Central Energy Fund. SAnews, ‘How the Basic Fuel Price is calculated’. sanews.gov.za
[4] Indicative industry estimate based on South African logistics and construction sector cost structures.
[5] Parliament of South Africa, Portfolio Committee on Electricity, March 2025; Moneyweb, ‘SA will run out of industrial gas by 2028’; The Conversation, March 2026.
