Recent observations regarding Petróleos Mexicanos have once again brought the importance of Transfer Pricing and transparency in transactions between related entities to the forefront of the debate. According to financial analyses conducted by Finamex Casa de Bolsa, there were inconsistencies in the prices used for internal crude oil transfers between the Exploration and Production and Industrial Processing divisions during the first quarter of 2026.
These observations highlight how internal pricing policies can significantly impact the financial results of different business segments, raising questions about the economic reasonableness of intra-group transactions.
Internal Transfers and Value Allocation
Within complex corporate groups, transactions between divisions or related companies must adhere to consistent economic criteria aligned with the arm’s-length principle.
In the case of Pemex, the analysis of the first quarter of 2026 indicates that Industrial Transformation reported a significant reduction in cost of goods sold compared to the same period of the previous year, even though there was an increase in the volumes of crude oil processed within the National Refining System.
According to the report, while in 2025 the subsidiary reported payments exceeding 239 billion pesos for crude oil purchases, in 2026 the amount had decreased to approximately 81 billion pesos, despite the increase in barrels purchased.
Such discrepancies raise questions regarding:
- the valuation methodology used,
- the economic consistency of internal transfers,
- and the proper allocation of costs and results across segments.
Transfer Pricing and Economic Substance
Although transfer pricing is typically associated with international transactions between related companies, economic allocation principles are also relevant within complex corporate structures, especially when there are significant tax, financial, or regulatory implications.
Tax authorities and international regulatory bodies have increased their focus on:
- the economic consistency of related transactions,
- the correct allocation of profits,
- and the financial substance behind intra-group transactions.
In scenarios where one division shows financial improvements resulting from internal valuation adjustments, while another absorbs disproportionate tax and financial burdens, questions may arise regarding the transparency and reasonableness of such transactions.
Tax and Financial Risks
Inconsistencies in internal transfer pricing policies can generate various risks:
- financial distortions,
- regulatory scrutiny,
- reputational risks,
- and questions regarding corporate governance.
Furthermore, an asymmetric allocation of costs and benefits can hinder the accurate assessment of each business unit’s operational performance.
In the international context, OECD guidelines have reinforced the need for transactions between related parties to reflect value creation and verifiable economic criteria.
Transparency and control in related-party transactions
The case of Petróleos Mexicanos demonstrates how transparency in the determination of internal prices remains a key aspect within large-scale corporate structures.
The proper implementation of Transfer Pricing policies and internal control mechanisms is essential to:
- ensure financial consistency,
- strengthen investor confidence,
- reduce regulatory risks,
- and ensure transparency in corporate reporting.
In an environment of increasing financial oversight and monitoring, companies must strengthen their valuation and documentation policies to adequately support the economic rationale of their related-party transactions.
The debate surrounding Pemex’s internal transfers reflects the growing importance of Transfer Pricing and economic substance within modern corporate structures.
Beyond the immediate financial impact, such situations demonstrate the importance of maintaining clear, transparent, and technically sound criteria for allocating value among related entities.
At TPC Group, we have Transfer Pricing specialists ready to assist companies in designing valuation policies, conducting economic analysis, and ensuring compliance with international standards aligned with OECD guidelines.
Source: ElDiarioDeChihuahua