Moody's Affirms PEMEX at B1 Stable

Moody's Ratings has affirmed PEMEX's B1 Corporate Family Rating with a stable outlook, following a downgrade of Mexico's sovereign credit rating to Baa3. The decision highlights that PEMEX's rating remains heavily reliant on expectations of continuous, timely federal support rather than its own financial strength. On its own merits, PEMEX holds a speculative baseline credit assessment of ca, driven by persistent negative free cash flow and a projected annual funding gap of US$14.9 billion through 2028. This credit landscape directly impacts international bondholders and institutional investors, as both the sovereign and the state oil company now sit just one notch above speculative-grade territory across major rating agencies.

Moody's Ratings affirmed PEMEX's B1 Corporate Family Rating and its backed senior unsecured ratings on May 22, maintaining a stable outlook. The action came one day after the agency downgraded Mexico's sovereign credit rating to Baa3 from Baa2, the lowest rung of investment grade. PEMEX's B1 rating is not a reflection of its own financial strength. It is a reflection of how much the Mexican government is expected to keep paying for it.

The rating action was explained directly by Roxana Muñoz, Vice President and Senior Credit Officer, Moody's: "The affirmation of PEMEX's ratings reflects our expectation that the Government of Mexico will continue to provide very high and timely support to the company, as clearly demonstrated in 2025 and embedded in our forward-looking assumptions under the current administration. However, PEMEX's credit profile remains constrained by persistent operational challenges, which continue to result in negative free cash flow and significant funding needs."

The Sovereign Downgrade That Triggered the Review

Moody's downgraded Mexico's sovereign credit rating to Baa3 from Baa2 on May 21, placing the country one notch above speculative-grade status and revising the outlook from negative to stable, concluding a period of heightened scrutiny that began in November 2024. The downgrade reflects sustained weakening in fiscal strength that accelerated in 2024 and is expected to persist, as rigid spending, a narrow revenue base, and continued support to PEMEX limit the government's ability to stabilize debt in a low-growth environment. Mexico's fiscal deficit remained elevated at almost 5% of GDP in 2025, only modestly lower than 5.3% in 2024, pushing government gross debt to 49.3% of GDP.

The PEMEX rating action followed the sovereign decision by one day and was explicitly triggered by it. Despite the lower sovereign floor, PEMEX's B1 held because Moody's left its two key assumptions about government support unchanged: very high likelihood and very high correlation. Those two assumptions are what generate the uplift from PEMEX's standalone Baseline Credit Assessment of ca, the lowest point on Moody's scale, to B1. Without them, the published rating and the standalone credit profile would converge.

The Standalone Reality: Funding Gap

Moody's affirmation is best understood by separating what it says about government willingness from what it says about PEMEX itself. On the company's own merits, the picture is stark.

The ca BCA reflects a standalone credit profile characterized by persistent negative free cash flow, high leverage, and limited internal capacity to fund capital expenditures and debt obligations. Moody's estimates PEMEX's substantial funding needs at an average of approximately US$14.9 billion annually over the 2026–2028 period, a figure that encompasses debt maturities, supplier obligations, and capital expenditures. As of March 31, 2026, the company held approximately US$8 billion in cash and US$5.7 billion in committed revolving credit facility availability to address near-term obligations.

Moody's was direct about the production outlook: while upstream output has recently stabilized, this does not signal a structural reversal of decline. Current development schemes are unlikely to materially increase output. The agency also flagged that downstream operations remain inefficient, that a greater focus on domestic refining reduces hydrocarbon export revenues, and that fuel price caps and lower capital expenditure execution continue to pressure margins and production sustainability.

A Sovereign Downgrade That Was Anticipated — And Discounted

Moody's sovereign downgrade to Baa3 was not a surprise. Following S&P's revision of Mexico's outlook to negative on May 12, analysts at Banamex, Kapital Grupo Financiero, and Banco Base had warned that a formal Moody's downgrade was increasingly likely. The Banamex analysis noted that the key question for Moody's was no longer whether to maintain its stance, but whether to keep Baa2 with a stable outlook or downgrade to Baa3.

The move marks the third downgrade of Mexico's sovereign rating by Moody's in recent years, from A3 to Baa1 in April 2020, to Baa2 in July 2022, and now to Baa3 in May 2026. The new rating aligns Moody's with Fitch Ratings, which currently rates Mexico at BBB-, also one level above speculative grade. S&P maintains Mexico at BBB with a negative outlook. The convergence of the three agencies at or near the investment-grade floor is the most consequential feature of Mexico's current credit landscape.

What Keeps the B1 and What Could Take It Away

Moody's was precise about the conditions for rating movement in both directions. An upgrade would require a change in strategy and a sustainable operating framework that result in meaningful improvement in operating performance and cash flow, including the ability to internally fund capital investment, stabilize or grow production, and reduce reliance on external support, a combination that no credible near-term scenario currently supports.

Downward pressure would emerge from a reduction in the government's willingness or ability to provide timely support, a further downgrade of the sovereign, a further deterioration in operating performance, declining production, rising costs, or an increase in debt or liquidity pressure.