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Borys Ulanenko
CEO of ArmsLength AI

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A transfer pricing benchmarking study compares your intercompany transaction's profitability against independent companies to demonstrate arm's length pricing. The three pillars of a defensible study are:
This guide covers the complete benchmarking workflow. For specific topics, see our deep-dives on IQR calculation methods, CPM vs TNMM, and functional analysis.
Transfer pricing benchmarking is the process of comparing the profitability of controlled transactions between related parties against independent market data to verify arm's length compliance. A transfer pricing benchmarking study identifies comparable companies, analyzes their financial results, and establishes an arm's length range for the tested transaction.
Transfer pricing benchmarking definition: The systematic process of identifying independent companies with comparable functions, assets, and risks, and analyzing their profitability to determine whether controlled transactions are priced consistently with the arm's length principle.
The benchmarking process typically involves six key stages:
For a complete methodology, see our step-by-step guide below.
When I joined the international tax world back in 2012, I was shocked by how little guidance existed for creating professional benchmarking studies. Fast forward to today, and benchmarking remains both an art and science that many TP professionals struggle to master.
Since then, I've progressed from intern to senior manager, worked for Big4 and multinationals, and I believe it's the perfect time to share my knowledge about creating benchmarking studies that both satisfy tax authorities and provide genuine value to your organization.
A benchmarking study is the cornerstone of transfer pricing documentation. It supports your pricing model by demonstrating that your related-party transactions align with what independent enterprises would agree to. But beyond regulatory compliance, a well-structured study serves as your first line of defense in tax audits.
In a profit-based analysis, the "tested party" is typically the subsidiary or division directly tied to recorded profits. This entity determines whether your transfer pricing aligns with arm's length standards.
Functional Analysis: Start by gaining a good understanding of the functions and economic circumstances of the tested party. This involves examining its operations, assets, and the risks it assumes.
Examine Intercompany Agreements: Review the actual intercompany agreements. These documents often contain descriptions that may not accurately reflect reality, making it essential to validate and understand the nuances.
Gather Financial Data: Collect comprehensive financial data concerning the tested party. Consider aspects like the assets it holds, the types of risks it assumes, and its profitability.
This functional analysis will form the bedrock of your transfer pricing documentation, ensuring it is robust and defensible.
The best benchmarking studies share three key characteristics:
A benchmarking study shouldn't just be a compliance exercise—it should tell a compelling story about your transfer pricing position that can be understood by anyone reviewing it.
Begin by defining the specific intercompany transactions whose transfer pricing positions need to be analyzed. These transactions can include buying and selling goods, providing services, or licensing intangible assets.
In a profit-based analysis, the "tested party" is typically the subsidiary or division directly linked to recorded profits. Understand the functions and economic circumstances of this party. Drill down into intercompany agreements to align them with reality and gather financial data, including assets, risks, and profitability.
With a foundational understanding of your tested party, look for external companies with similar functions, assets, and risks. The goal is to find comparable transactions for benchmarking, focusing on functions performed, risks taken, and assets employed.
Search for the best comparables using a variety of databases, both public and private. What matters most is that the data is reliable and sufficient to create a robust benchmarking study.
While local tax authority preferences are important, it may be necessary to include regional companies to find relevant comparable data. Be aware of country-specific rules that could affect your analysis.
It's rare to find data that perfectly fits your transaction. Adjustments, such as working capital adjustments, are often necessary to ensure an apples-to-apples comparison, leading to a more reliable profitability outcome.
With a basket of comparable observations, calculate the arm's length range of acceptable profit margins. Apply statistical analysis to establish the range of prices that unrelated parties would charge for similar transactions.
Thorough documentation supports audit preparedness. Record all steps taken, data collected, adjustments made, and rationales behind your choices.
Your report should begin with a professional cover page clearly stating:
Follow this with a concise executive summary (maximum one page) that includes:
Include a table of contents with page numbers for all main sections and appendices.
The methodology section is where tax authorities focus their attention. It should be detailed enough to demonstrate the robustness of your approach while remaining readable.
Clearly specify:
When searching for comparables in transfer pricing benchmarking, database selection matters. There are numerous options available, ranging from public databases to specialized private ones:
Despite the preferences of tax authorities for local databases, there's no regulation compelling the use of a specific one. This flexibility allows you to select a database that best meets your benchmarking requirements, as long as it delivers reliable and sufficient data.
Remember, while public company data is typically readily available, private company data can often be sourced from public registries and credit rating agencies. Prioritize databases that offer comprehensive and credible information to ensure the effectiveness of your benchmarking study.
Group your criteria into logical categories:
In developing your search strategy, start with a foundational understanding of the tested party. This knowledge ensures that you're targeting external companies with similar functions, assets, and risks.
Traditionally, comparables were sought within the same industry, but with today's data availability and AI innovations, this isn't always necessary. Focus instead on the core elements:
Remember to articulate the rationale behind each major filter. This demonstrates thoughtfulness and pre-empts potential challenges. Tax authorities increasingly focus on the quality of your selection process, not just the results.
Never include search criteria without explaining your reasoning. Tax authorities increasingly focus on the quality of your selection process, not just the results.
emphasize the importance of manual screening. Your report should:
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Your results section should be clean, precise and focused on the key outputs:
Selecting the right PLI is critical to a defensible benchmarking study. The table below summarizes when to use each indicator:
| PLI | Formula | Best For | Limitations |
|---|---|---|---|
| Operating Margin (OM) | Operating Profit ÷ Revenue | Distributors, service providers | Sensitive to revenue fluctuations |
| Net Cost Plus (NCP) | Operating Profit ÷ Total Costs | Contract manufacturers, service centers | Requires clear cost allocation |
| Berry Ratio | Gross Profit ÷ Operating Expenses | Low-risk distributors, agents | Less common, not universally accepted |
| Return on Assets (ROA) | Operating Profit ÷ Total Assets | Asset-intensive manufacturers | Affected by depreciation policies |
| Return on Operating Assets (ROOA) | Operating Profit ÷ Operating Assets | Capital-intensive operations | Excludes non-operating assets |
Match your PLI to the tested party's primary value driver. For a distributor where sales volume drives profits, use Operating Margin. For a contract manufacturer where cost efficiency matters, use Net Cost Plus.
When considering the profitability of potential comparables versus the tested party, understand the analysis preference. Most tax authorities lean towards a multiyear approach. This typically involves a weighted average of three to five years of data, which helps smooth out the effects of economic cyclicality.
By examining multiple years, you gain a comprehensive view of a company's business decisions and their impact on its operating framework. This approach aligns with OECD guidelines and offers a more robust measure compared to single-year analysis.
When dealing with transfer pricing benchmarking, selecting the right averaging method matters. Here are common approaches:
The simple average treats all data points equally, operating under the assumption that there are no significant differences in functions, assets, and risks among the comparables. It's most effective when the selected comparable companies hold relatively equal importance in the analysis.
For scenarios where there are variations in the size or significance of comparable companies, the weighted average offers a more accurate and tailored benchmark. By assigning higher weights to the most relevant comparables, this method aligns closely with the specific characteristics of the tested party, often favored by tax authorities for its precision.
In industries experiencing rapid changes or significant fluctuations in financial performance, the period-weighted average becomes particularly useful. By focusing on recent years, this approach ensures that the benchmark reflects current economic conditions, making it ideal for fast-paced sectors.
Each method has advantages depending on your analysis context.
When analyzing data for transfer pricing benchmarking, two primary methods often come into play: the interquartile range (IQR) and the full range. Each offers unique insights depending on the objectives and constraints of your analysis. Here's how they differ:
The choice between IQR and full range depends on your benchmarking needs. IQR prioritizes reliability; full range offers broader coverage. Consider your risk profile and data availability.
Appendices transform a good benchmarking study into a great one. They demonstrate thoroughness and provide an audit trail:
A well-organized accept/reject matrix can save hours during a tax audit. It shows you've been methodical and transparent in your screening process.
Ask yourself these questions:
Remember that tax authorities across jurisdictions are becoming increasingly sophisticated in their approach to transfer pricing. A benchmarking study that might have passed scrutiny in 2015 may not satisfy today's standards. The best benchmarking studies anticipate questions before they're asked. Every decision in your process should have a clear, documented rationale.
To navigate these complexities, conduct a thorough analysis of comparable companies' financial data and activities. This allows you to:
Thoroughly document all steps taken, data collected, and adjustments made, along with the rationale behind your choices.
You can never be sure of, let alone control, how tax authorities will respond to your transfer pricing positions. Therefore, being prepared for any potential audits or inquiries is wise. The more comprehensive your documentation, the more defensible your position will likely be.
The best benchmarking studies anticipate questions before they're asked. Every decision in your process should have a clear, documented rationale.
Creating a high-quality benchmarking study requires both technical knowledge and attention to detail. The effort invested in proper documentation pays dividends during tax audits and adds genuine value to your organization's TP strategy.
A well-executed transfer pricing benchmarking analysis strengthens compliance and helps MNEs make strategic decisions. By assessing performance relative to industry peers, companies can identify their market position and pinpoint areas for improvement.
Benchmarking also reveals cost-saving opportunities and helps optimize internal pricing strategies.
As transfer pricing continues to evolve, so too will benchmarking methodologies. Stay current with OECD developments and emerging digital tools to ensure your studies remain robust and defensible.
I'd love to hear about your experiences with benchmarking studies. What challenges have you faced? What techniques have you found most effective? Share your thoughts in the comments below.
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This guide is based on guidance from the OECD Transfer Pricing Guidelines (2022):
→ Search the full OECD Guidelines
Transfer pricing benchmarking is the process of comparing controlled transaction profitability to independent market data. It's important because: (1) it demonstrates arm's length compliance to tax authorities per OECD Chapter III, (2) it provides penalty protection through documented analysis, and (3) it's required for transfer pricing documentation in most jurisdictions under OECD Chapter V. A well-executed benchmarking study is your primary defense in a transfer pricing audit.
Traditional manual benchmarking studies take 20-40 hours per transaction type, including database searches, manual company screening, and report preparation. With AI-assisted tools like ArmsLength AI, this can be reduced to 4-8 hours while maintaining or improving quality. The time depends on comparable availability, transaction complexity, and jurisdictional requirements.
Most tax authorities accept benchmarking studies for 3 years before requiring an update. However, consider refreshing your study earlier if there are significant changes in the business model, market conditions, or if comparables in your set have undergone material changes.
While there's no universally accepted minimum, most practitioners aim for 7-15 comparables. Quality matters more than quantity—a carefully selected set of 8 highly comparable companies is stronger than 25 loosely comparable ones. Some jurisdictions (like Germany) have indicated preferences for certain minimums, so consider local requirements.
The interquartile range is the standard approach to mitigate outliers, but you should still critically evaluate extreme results. If a company shows persistent extreme results (either high or low), consider whether it remains a valid comparable. Document your reasoning if you remove companies after initial acceptance.
While operating margin (OM) is most commonly used for distributors, the best PLI depends on your specific facts and circumstances. Return on assets might be more appropriate for asset-intensive distributors, while berry ratio could be better for limited-risk distributors. Always explain your PLI selection rationale.
Business descriptions should be detailed enough to demonstrate comparability with the tested party. Include information about:
Some practitioners use A/B/C ratings to indicate perceived comparability quality. While this approach can add nuance, it also introduces subjectivity that may be challenged. If you use quality ratings, clearly document your criteria and be prepared to defend your assessments.
When dealing with transfer pricing benchmarking, adjustments are often necessary due to the rarity of finding data that perfectly fits your tested-party transaction. These adjustments transform disparate data into a useful apples-to-apples comparison.
Comparability adjustments (for working capital, risk, etc.) should be:
Typically, working capital adjustments involve standardizing balance-sheet items like inventory and accounts receivable or payable to the tested party. The aim is to achieve a more reliable profitability outcome. Beyond these, other adjustments may be necessary to address variations in business practices, accounting standards, product quality, or arm's length contract terms.
The most common mistake is insufficient documentation of the qualitative screening process. While practitioners often document database filters thoroughly, the manual screening rationale is frequently abbreviated or generic. Document specific rejection reasons for each company reviewed.
Maintain a consistent global approach to benchmarking methodology while adapting to local requirements through:
When selecting comparables for transfer pricing benchmarking, jurisdictional considerations matter. Understanding the nuances of local and regional tax authorities is essential.
Start by aligning with local tax authorities' preferences, which often means seeking comparables within the same country as your tested party. However, local markets may sometimes lack sufficient data, necessitating a regional search. For example, exploring comparable companies across Europe might yield more relevant data than focusing solely on one country like Portugal.
Each country has its unique set of transfer pricing regulations. These rules can vary significantly and affect the assessment of comparables:
Companies must comply with multiple sets of rules, each distinct by country. Jurisdictional considerations influence comparable selection, requiring understanding of both local and international requirements.
For distributors, operating margin (OM) is the most common PLI because revenue directly relates to the value of distribution functions. However, for limited-risk distributors who primarily handle logistics without inventory risk, the Berry ratio may be more appropriate since their value is driven by operating expenses rather than sales volume. Asset-intensive distributors (e.g., with significant warehousing facilities) might benefit from return on assets (ROA). The key is matching the PLI to what drives profitability in your specific distribution model.
Use the interquartile range (IQR) as your default approach—it's preferred by most tax authorities because it mitigates the impact of outliers and imperfect comparability. Use the full range only when you have highly reliable comparables with minimal comparability defects AND you can articulate why all data points are equally valid. The IRS, OECD, and most jurisdictions prefer IQR to mitigate the impact of imperfect comparability. See our IQR vs Full Range guide for decision criteria and our IQR calculation guide for detailed calculation methods by jurisdiction.
Working capital adjustments standardize differences in accounts receivable, accounts payable, and inventory between comparables and the tested party. The process involves: (1) calculating each comparable's working capital intensity (WC items ÷ revenue), (2) determining the tested party's working capital intensity, (3) computing the difference, and (4) applying a risk-free interest rate to arrive at the adjustment factor. Only make adjustments when differences are material—typically when they would change the PLI by more than 0.5%.
While there's no universal minimum, 7-15 comparables is generally considered robust. Some jurisdictions have indicated preferences: Germany often expects at least 10 comparables, while smaller markets may accept fewer with proper justification. The key is quality over quantity—8 highly comparable companies is better than 25 loosely comparable ones. If you have fewer than 5 comparables, document thoroughly why more couldn't be found.
Generally, no. Start-up companies typically have different cost structures, growth investments, and profitability patterns than established businesses. Most tax authorities expect comparables to be established companies operating under normal business conditions. However, if your tested party is itself a start-up, including start-up comparables may be appropriate—document your reasoning carefully.
Identify material differences and make adjustments where possible. Common issues include: different depreciation methods (straight-line vs. accelerated), inventory valuation (FIFO vs. weighted average), and revenue recognition timing. If adjustments can't be reliably made, consider excluding the comparable and documenting why. Always use audited financial statements when available, and note any accounting policy differences in your business descriptions.