What Is Transfer Pricing?
Transfer pricing refers to the value assigned to transactions involving the purchase, sale, or provision of services between companies that belong to the same economic group or that are related to one another—whether through shareholding, shared management, or any other type of relationship. These transactions can include tangible goods, administrative or financial services, and even intangible assets such as trademarks, patents, or know-how.
When two independent companies negotiate with each other, the market sets the price naturally. But when the parties are related, there's a risk that transfer prices will be set artificially, in an attempt to shift profits from one country to another or improperly reduce the tax burden. To prevent this, tax authorities require that these transactions be agreed upon as if the parties were independent: this is known as the arm's length principle.
The international benchmark in this field is the OECD Guidelines, which set out the methodological and documentation standards that most countries—including Mexico—have adopted as the basis for their local regulations.
Why Does Transfer Pricing Matter for Businesses?
Complying with transfer pricing regulations isn't just a concern for large multinational corporations. Any company with transactions between related parties, whether domestic or international, should pay attention to this issue for three main reasons:
- Tax compliance: authorities are scrutinizing intercompany transactions more closely than ever, and proving that they were agreed upon under market conditions is essential to avoid tax exposure.
- Competitiveness: a well-designed transfer pricing policy provides clarity on the real profitability of each transaction and prevents distortions that could skew business decision-making.
- Risk management: solid documentation reduces exposure to authority scrutiny and protects the company's reputation with partners, investors, and other stakeholders.
Moreover, transparency in international transactions has become a standard expected by authorities, investors, and business counterparts alike. Companies that properly document their related-party transactions convey trust and financial soundness.
What Are the Risks of Not Complying with Transfer Pricing Rules?
Failing to maintain proper transfer pricing documentation exposes a company to concrete risks that can translate into significant financial impact:
- Tax adjustments: authorities can recalculate the income or deduction of a transaction if they determine it wasn't agreed upon under market conditions.
- Fines: missing or incomplete documentation can lead to financial penalties.
- Audits: related-party transactions are typically a top focus area in tax reviews, which can trigger more extensive and drawn-out audit processes.
A lack of documentation doesn't just lead to immediate penalties—it also leaves the company without solid grounds to defend its transactions during a review.
Prevention, in this sense, is the most cost-effective strategy. Keeping documentation up to date and aligned with the actual operations of the business helps avoid surprises and protects the company's long-term financial health.
How Is Transfer Pricing Determined?
Transfer pricing is determined using internationally recognized valuation methods, which aim to compare the transaction between related parties with equivalent transactions between independent parties. The most commonly used methods include:
| Method | Approach |
|---|---|
| Comparable uncontrolled price method | Compares the price of the related-party transaction with that of a similar transaction between independent parties. |
| Cost-plus method | Starts from the supplier's cost and adds a reasonable profit margin. |
| Transactional net margin method | Analyzes the profit margin earned in comparable transactions. |
| Resale price method | Starts from the resale price to a third party and subtracts an appropriate gross profit margin. |
Choosing the right method depends on the nature of the transaction, the availability of information, and the industry in which the company operates. In every case, reliable comparable data and a market analysis supporting the choice of method are essential.
What Documents and Records Does Your Company Need?
Any company with related-party transactions must maintain complete documentation that can demonstrate, in the event of any review, that its transactions were agreed upon under market conditions. Key elements include:
- A transfer pricing report or study describing the transaction, the method chosen, and the analysis's conclusions.
- A detailed record of transactions carried out with related parties, both domestic and international.
- A comparability analysis supporting the reasonableness of the prices or margins agreed upon.
- Supporting reports and financial information that allow the analysis to be reconstructed in case of an audit.
Maintaining this traceability isn't just a formal requirement—it's the evidence a company needs to respond confidently to any request from the tax authority.
What International Regulations and Guidelines Govern Transfer Pricing?
The global reference framework is the OECD Guidelines, which set out the methodological principles and documentation requirements that most tax administrations have adopted. In Mexico, these guidelines are complemented by local regulations that specify how they should be applied within the national tax context.
Additionally, when a transfer pricing study is part of a financial audit process, its development must align with the International Standards on Auditing (ISA), which ensure that the analysis is carried out with methodological rigor and professional consistency. In practice, this means a company must not only choose the correct method but also document it in a way that can withstand both tax scrutiny and a potential external audit.
How Can an Accounting Firm Help You with Transfer Pricing?
Having a specialized partner makes all the difference between complying out of obligation and complying strategically. The transfer pricing service involves preparing studies and documentation under OECD guidelines and local regulations, integrated into a broader accounting and tax and financial audit approach that gives the company a complete view of its tax compliance.
This work is backed by a dedicated senior team with more than 15 years of experience serving domestic and international companies—including names like Trafigura, Segula, Ecoce, Drivin, and Zehr—under a direct-attention model where each client is supported by partners and senior specialists, not junior staff.
The first step is always a diagnostic assessment, which identifies the current state of the company's documentation and related-party transactions, laying the groundwork for building the right compliance strategy. That diagnostic is, ultimately, the gateway to your company's financial health.
If your company carries out transactions with related parties and you want to make sure you're complying with current regulations, you can schedule a diagnostic assessment by emailing contacto@contadoor.com.mx or calling 55 1897 9607, with the assurance of competitive fees compared to traditional firms.