Mexican Oil Price Over US$100/b Threshold

WTI crude futures have stabilized around US$106/b following a proposed U.S. sanctions waiver for Iran, leaving the Mexican Crude Export Blend (MME) priced roughly 93% above its US$54.9/b federal budget baseline. This sustained price spike, triggered by Middle East geopolitical conflict and the closure of the Strait of Hormuz, creates a structural fiscal paradox for Mexico. While the surge generates a substantial revenue windfall for public finances via crude exports, it simultaneously exposes the federal government to an estimated MX$220 billion in IEPS fuel subsidy losses and inflated US natural gas import bills, driving up operational costs and inflationary pressures across the manufacturing, logistics, and energy-intensive industrial sectors.

WTI crude oil futures traded around US$106/b on May 18, 2026, after Iranian media reported that the United States proposed a temporary waiver on oil sanctions pending a final agreement. Earlier optimism had also been supported by reports that Tehran may be willing to consider a long-term nuclear freeze agreement. The Mexican export blend, which trades at a persistent discount to WTI due to its heavier gravity and sulfur content, was priced at approximately US$106/b on May 12, according to PEMEX data, a level that places the Mexican Export Mix (MME) roughly 93% above the US$54.9/b price assumed in the 2026 federal budget.

The conflict that erupted on Feb. 28, 2026, when US and Israeli forces launched coordinated airstrikes on Iran, had a ripple effect across the world's energy industries. Within days, the Strait of Hormuz had ground to a near-halt, Brent crude breached US$100/b, and Mexico's crude export blend jumped to its highest level in months.

The price trajectory of the MME over the subsequent weeks was steep. The Mexican Mix closed the week of March 2 at US$66.63/b, a 5% jump in a single week, its largest surge since sanctions on Russian companies triggered a 6.3% spike in October 2025. By March 6, the blend had reached US$83.64/b, its highest level in more than two years and four months, representing a 31.8% increase week-on-week, as a result of accelerating geopolitical uncertainty in the Middle East. By March 20, the MME had approached US$99.21/b, its highest level in 3 years and 8 months, up 80.7% above the SHCP's budgeted price for the year.

A fragile ceasefire announced on April 8 brought temporary relief, with Goldman Sachs trimming its 2Q26 Brent forecast to US$90/b from US$99/b. Prices have since climbed back toward the US$100/b threshold as diplomatic talks over the nuclear file remained unresolved and the US Navy continued enforcing maritime restrictions around Iranian ports.

The Fiscal Math and Its Limits

The headline benefit for Mexico's public finances is real. Each US$1 increase in the price of the Mexican crude export blend generates approximately MX$13.1 billion in additional federal oil revenues. The 2026 budget was based on an oil price of US$54.9/b and projected oil revenues of MX$1.204 trillion, representing a 1.9% increase from the prior year. Mexico activated its annual oil hedge in early January, with Finance Minister Edgar Amador confirming the operation while keeping the strike price and covered volumes confidential to protect the hedge's market effectiveness.

Mexico imports most of its natural gas and a majority of its refined fuels, primarily from the United States. When global crude prices spike, US refined products and gas prices tend to rise as well, and those higher prices are passed through to Mexican buyers, from refiners and power generators to transport companies and consumers. The fiscal impact cuts the other way through fuel subsidies. The IMEF estimated that a year-long Hormuz disruption at current price levels could expose the federal government to over MX$220 billion (US$12.7 billion) in revenue losses driven by higher fuel subsidies under the IEPS tax framework, potentially pushing the 2026 fiscal deficit to around 5% of GDP, above the 4.1% target.

A Structural Paradox

The paradox is structural: being an oil producer does not shield Mexico from an oil price shock. The country earns more from crude exports when prices surge, but simultaneously pays more for the imported fuels and gas it needs to run its economy. The net effect is inflationary, particularly in transport, electricity, and food.

Higher natural gas prices, driven by global LNG market jitters, raise power generation costs, hitting energy-intensive industries such as cement, steel, and manufacturing first, eroding competitiveness when companies face higher input costs than global peers.