What Is Transfer Pricing? A Practical Guide

Short answer. Transfer pricing is the pricing of transactions between companies that are under common ownership or control, such as a parent and its subsidiary, or two sister companies in the same group. Because the parties are not bargaining as strangers, the price they put on an internal sale, a loan, a service fee or a royalty directly moves profit, and therefore tax, from one company to another. Tax rules in most countries require those internal prices to reflect what independent businesses would have agreed in the open market.¹

What is transfer pricing? Meaning, related parties and covered transactions

In plain terms, transfer pricing describes the price charged whenever one company in a group buys from, sells to, lends to or provides a service to another company in the same group. The UN Practical Manual puts it simply: transfer pricing is the general term for the pricing of transactions between associated enterprises involving the transfer of property or services, and such intra-group deals are called controlled transactions, as distinct from uncontrolled deals between parties operating on an arm’s length basis.² The scope includes tangible goods, services, financing and the use of intellectual property. Financing transactions are distinct from transactions involving intangible assets such as intellectual property.³

Who counts as a “related party”?

Two companies are usually treated as related, or “associated”, when one controls the other or when the same person or group controls both. The international definition sits in Article 9 of the OECD and UN Model Tax Conventions, which treats enterprises as associated if one participates directly or indirectly in the management, control or capital of the other, or if the same persons participate in both.⁴ Article 9 covers so-called parent-subsidiary relationships and brother-sister relationships, and the degree of control required to trigger transfer pricing legislation is left largely to domestic law.⁵

Thresholds vary. Some countries use a 50 per cent shareholding test, others use a lower percentage, and many fall back on tests of de facto management or control such as dependency on input materials, distribution networks, voting rights, inclusion in consolidated accounts, or shared financial and human resources.⁶ The practical point is that “related” is not only about who owns the shares. Influence or control beyond formal share ownership therefore needs to be checked against the relevant domestic definition.

What kinds of transactions are covered?

Transfer pricing applies to almost anything that can move between group companies and that has a price attached to it. Common examples include:

• sales of raw materials, components and finished goods between manufacturing and distribution companies;
• management, administrative, IT or technical services provided from one group company to others;
• intra-group loans, cash pooling, guarantees and other financing;
• licences of trade marks, patents, know-how and software, and the related royalty streams; and
• cost-sharing or cost-contribution arrangements for research and development.⁷

Because the terms and conditions of each of these transactions determine both revenue in the selling company and cost in the buying company, the transfer price directly drives the profitability of each party and the tax it pays.⁸

A simple worked example: how the intercompany price affects each company

Consider this hypothetical manufacturing and distribution group. The figures and tax rates below are assumptions for illustration, not current rates for identified countries. HQ Co owns two wholly-owned subsidiaries: Sub A, which manufactures a product in Country A (corporate tax rate 35 per cent), and Sub B, which distributes that product to customers in Country B (corporate tax rate 30 per cent). Sub A sells the goods to Sub B, which on-sells them to independent customers.⁹

Assume Sub A’s own costs are $85,000 for the batch, Sub B’s distribution costs are $25,000, and Sub B’s external sales revenue is $140,000. The group’s total pre-tax profit is $30,000, no matter what the internal price is. But the split of that profit, and therefore the tax paid in each country, depends entirely on the transfer price.¹⁰

At $90,000 the group pays $9,250 of tax in total; at $100,000 it pays $9,750. By moving the transfer price down by $10,000, the group shifts $10,000 of profit from higher-tax Country A to lower-tax Country B, saving $500 overall.¹¹

That is the whole reason tax authorities care. Country A will want Sub A to report its revenue at what independent parties would have agreed, say $100,000, so that profits taxable in Country A are not understated. Country B may take the opposite view and demand the price be set at $90,000, so that Sub B’s costs are not inflated.¹² If the two tax authorities disagree, the same $10,000 slice of profit can end up being taxed in both countries at the same time, a situation known as double taxation.¹³

The UN Practical Manual uses the same mechanics in its “Solid State Drive Manufacturer” example: the price a parent in Country A pays its subsidiary in Country B for solid state drives decides how much profit the subsidiary reports and how much local tax it pays; if that price is below the arm’s length amount, the subsidiary can look loss-making even though the group is comfortably profitable.¹⁴ The Manual’s second worked example, involving a luxury watch distributor whose entire margin is absorbed by the transfer price it is charged, shows how the same mechanism can leave the distributor with no local profit at all and lead to economic double taxation when the two tax authorities take opposing views.¹⁵

The arm’s length principle: what comparable independent businesses would agree

Nearly every transfer pricing regime in the world is built on a single idea: group companies should price their internal dealings as if they were independent businesses negotiating in the open market. That idea is called the arm’s length principle.

The OECD defines it as the international standard that OECD member countries have agreed should be used for determining transfer prices for tax purposes. It is set out in Article 9 of the OECD Model Tax Convention, which allows a tax authority to adjust profits where conditions “are made or imposed between the two enterprises in their commercial or financial relations which differ from those which would be made between independent enterprises”.¹⁶ The arm’s length principle is the preferred basis for pricing related-party transactions precisely because it puts group and independent businesses on an equal footing for tax purposes, avoiding distortions of competition.¹⁷

Applying the principle is harder than stating it. It involves comparing the conditions of the controlled transaction with the conditions that would be observed between independent enterprises, which means more than just comparing prices: it means comparing contractual terms, functions performed, risks assumed, assets used, economic circumstances and business strategies.¹⁸ Where no exact comparable can be found, the analysis frequently relies on an arm’s length range of acceptable outcomes rather than a single number.¹⁹

Who needs to consider transfer pricing? Common business situations and jurisdiction differences

The arm’s length principle applies, in theory, to every cross-border transaction between related parties, but national rules shape where the practical burden falls.

Multinational groups

Any group with activities in more than one country should assume that transfer pricing is relevant. Transfer pricing is a real-world issue rather than a theoretical one: multinational enterprises commonly trade goods and services within their groups.²⁰ Business changes, from a supply-chain reorganisation to a new financing arrangement, can bring transfer pricing implications.²¹

Small and medium-sized groups

Transfer pricing is a resource-intensive compliance exercise, and many jurisdictions have introduced lighter rules for smaller taxpayers. The UK is a good example. UK legislation provides an exemption from the transfer pricing rules for most transactions of a “small or medium-sized enterprise” under section 166 of the Taxation (International and Other Provisions) Act 2010.²² The exemption follows a modified version of the European Union recommendation on SMEs, but exceptions apply to transactions involving non-qualifying territories and to provisions specified in a transfer pricing notice issued to a medium-sized enterprise. An SME can also elect to remain within scope. For provisions relevant to a Patent Box claim, HMRC may issue a notice requiring transfer pricing to be applied.²³ The OECD also recommends that SMEs should not have to produce the same volume of documentation as larger groups, so that the costs do not become disproportionate to the risk.²⁴

Jurisdictional differences

Even when two countries agree on the arm’s length principle, significant differences in domestic law can lead to double taxation.²⁵ Three recurring areas of divergence are worth watching:

• The threshold for “related” status. Thresholds for being treated as associated enterprises range from a straight 50 per cent shareholding to lower participation levels combined with de facto control tests.²⁶ Under Brazil’s current Law No. 14,596/2023, related-party status covers influence capable of producing non-arm’s-length terms and specified relationships. Examples include common control and the same shareholder holding at least 20 per cent of each entity’s capital; there is no single universal 10 per cent test.²⁷
• SME relief. Several jurisdictions, including the UK, exempt smaller groups from the full documentation and self-assessment regime, while others apply the rules in full regardless of size.²⁸
• Methods and preferences. Most jurisdictions follow the OECD’s five methods and the “most appropriate method” rule, and domestic legislation may prescribe additional conditions or preferences, so local method-selection rules must be checked.²⁹

The five transfer pricing methods: what each method compares and its limitations

Chapter II of the OECD Guidelines recognises five methods for testing whether a controlled transaction is arm’s length.³⁰ Three are “traditional transaction methods” and two are “transactional profit methods”. The current OECD approach is not a strict hierarchy: taxpayers should select the method that is most appropriate on the facts, with CUP preferred over another method when both can be applied equally reliably. A traditional transaction method is also preferred over a transactional profit method when both are equally reliable.³¹

Comparable Uncontrolled Price (CUP) method

What it compares. The price charged in the controlled transaction against the price charged in a comparable transaction between independent parties.³²
Where it works best. Commodities and highly standardised products with observable market prices.
Limitations. It is the most direct of the methods, but it demands close product and functional comparability; small differences in terms, volumes or markets can undermine the comparison, which is often difficult to establish in practice.³³

Resale Price method

What it compares. The gross margin earned by the related reseller against the gross margin earned by independent resellers on comparable products.³⁴
Where it works best. Simple distribution and buy-sell businesses that do not add significant intangibles to the product.
Limitations. It requires comparability of functions and accounting treatment of costs. Where the local distributor performs significant marketing or product adaptation, gross-margin comparisons become unreliable.

Cost Plus method

What the Cost Plus method compares. The mark-up on costs earned by the related supplier against the mark-up earned by independent suppliers in comparable transactions.³⁵
Where it works best. Contract manufacturers, intra-group service providers and toll manufacturers performing routine functions.
Limitations. Sensitive to differences in cost base definition between the tested party and the comparables; inconsistent treatment of indirect costs can distort the mark-up.

Transactional Net Margin Method (TNMM)

What it compares. The net profit margin, relative to an appropriate base such as costs, sales or assets, earned by the tested party against the net margins earned by independent comparables.³⁶
Where it works best. One party performs routine functions and does not own valuable intangibles; it can be useful where reliable net margin information is available but gross margin or product-level price information is insufficient.³⁷
Limitations. Net margins can be influenced by factors that have little to do with pricing, including capacity utilisation, management efficiency and accounting policies, so adjustments are often needed.

Profit Split method

What it compares. The combined profit from the controlled transactions is split between the related parties on an economically valid basis that approximates what independent enterprises would have agreed.³⁸
Where it works best. Highly integrated operations and transactions involving unique and valuable contributions from both parties, such as joint development of intangibles.
Limitations. It is data-intensive and relies on judgements about how to measure each party’s relative contribution; splits based on simplified cost or asset keys can mask the economics of the transaction.

In practice, the first three methods look at prices or gross margins, and the last two look at profits. The CUP method is the most direct way of estimating the price independent parties would have agreed; the Resale Price and Cost Plus methods compare gross margins; TNMM and Profit Split compare the net outcomes of the transaction.³⁹

How businesses approach compliance: transactions, functions, benchmarking and records

A workable transfer pricing compliance process usually moves through four steps. None of them is a formality: each one feeds the next.

Step 1: Identify the controlled transactions

Start by listing every material cross-border flow between group companies. In practice this includes sales of goods, intra-group services, licence and royalty flows, intra-group loans, guarantees and cost-sharing arrangements.⁴⁰ Immaterial transactions can usually be grouped or set aside under local materiality thresholds.⁴¹

Step 2: Perform a functional analysis (FAR)

For each material transaction, the group needs to understand which entity performs which functions, uses which assets and bears which risks. This “FAR” analysis is central because, in third-party dealings, compensation reflects the functions performed, assets employed and risks assumed by each party.⁴² The UN Manual describes the exercise as finding and organising facts about the transaction in terms of functions, risks and assets, in order to see how they are divided between the parties.⁴³ The functional analysis also drives the choice of tested party and transfer pricing method.⁴⁴

Step 3: Select and apply the most appropriate method, then benchmark

Once functions and risks are mapped, the group selects the method that fits the transaction and the available data. Benchmarking uses economic techniques to find uncontrolled transactions or companies with similar functions, assets and risks, and derives an arm’s length price or margin from their observed results.⁴⁵ The result can be a single reliable figure or an arm’s length range. Where unquantified comparability defects remain and there are enough observations, statistical tools such as an interquartile range may improve reliability; narrowing the range is not automatic.⁴⁶

Step 4: Document the position

The OECD framework following BEPS Action 13 uses a three-tiered documentation structure, subject to domestic implementation and applicable thresholds: a Master File giving an overview of the group, a Local File describing the local entity’s controlled transactions, and a Country-by-Country Report for the largest multinational groups.⁴⁷ The Local File must describe each material category of controlled transactions, the method used, the comparables, any comparability adjustments, and the relevant financial information, and must tie to the local entity’s annual accounts.⁴⁸ Documentation should support the pricing position when it is established and confirm the arm’s length nature of actual financial results at the time of filing the tax return. A policy statement alone does not replace the analysis of the actual transaction.⁴⁹

Documentation is not just paperwork. Depending on domestic law, failure to provide the required documentation can affect the burden of proof and expose the group to penalties.⁵⁰

Common misconceptions and risks: profit shifting, adjustments and double taxation

Misconception 1: “Transfer pricing is tax avoidance”

Transfer pricing itself is not tax avoidance. Setting prices for intra-group transactions is a normal and unavoidable part of operating a multinational group; the issue only arises where the pricing does not reflect the arm’s length principle, in which case the authorities may treat it as mis-pricing, non-arm’s-length pricing or, in more serious cases, as avoidance or evasion.⁵¹ The concern for tax authorities is that groups can shift profit between countries by changing their internal transfer prices, moving taxable income to lower-tax jurisdictions.⁵²

Misconception 2: “Only huge multinationals need to worry”

Many SMEs that do business across borders fall within the general scope of the arm’s length principle; what varies is the level of documentation they must produce. Some jurisdictions, such as the UK, exempt most SME transactions from the rules; others require full compliance.⁵³ Even where an SME exemption applies, significant exclusions can bring smaller groups back inside the rules, for example for transactions involving non-qualifying territories or provisions specified in an HMRC notice concerning a Patent Box claim.⁵⁴

Misconception 3: “Transfer pricing is a science and there is one right answer”

Transfer pricing is not an exact science: applying the rules across jurisdictions can be costly, and the available evidence may support more than one reliable outcome.⁵⁵ The OECD framework reflects this reality by recognising both a single reliable result and, in suitable cases, an arm’s length range of acceptable results.⁵⁶

Risk 1: Transfer pricing adjustments and double taxation

If a tax authority concludes that a controlled transaction was priced outside the arm’s length range, it can make a primary adjustment, increasing the profit of the group company in its jurisdiction and taxing it accordingly.⁵⁷ Unless the other country makes a matching corresponding adjustment to reduce the profit of the counterparty, the same profit ends up taxed twice.⁵⁸ The relevant relief is not automatic and generally has to be claimed under the double tax treaty.⁵⁹

Risk 2: Secondary adjustments

Some countries treat the economic benefit resulting from the primary adjustment as a deemed dividend, loan or capital contribution, triggering withholding tax or other consequences. This “secondary adjustment” can create additional, often unexpected, layers of double taxation.⁶⁰

Risk 3: Reputational and governance risk

Practical governance consideration. Transfer pricing adjustments can attract public attention and expose boards and tax functions to criticism from investors, regulators and the media, especially where the group is seen to be routing substantial profits through low-tax jurisdictions. Managing that reputational risk is one reason groups now treat the arm’s length policy as a governance matter and not merely a tax compliance task.

Managing the risks

Risk management tools include robust contemporaneous documentation, periodic benchmarking refreshes, intercompany agreements that match the actual conduct of the parties, and the use of Advance Pricing Arrangements. An APA determines, in advance of controlled transactions, an appropriate set of criteria for the determination of transfer prices for a fixed period, and can be unilateral, bilateral or multilateral.⁶¹ Where a dispute does arise, the Mutual Agreement Procedure in Article 25 of most tax treaties allows the competent authorities of the two states to negotiate a resolution and eliminate the double taxation.⁶²

Key takeaways

• Transfer pricing is the pricing of transactions between related companies within the same group; it directly determines where profit, and therefore tax, is reported.⁶³
• The arm’s length principle, codified in Article 9 of the OECD and UN Models, is the international standard: group transactions should be priced as if negotiated between independent parties.⁶⁴
• The five OECD methods are tools, not rules; the “most appropriate method” depends on the facts, the available data and the degree of comparability.⁶⁵
• Smaller groups benefit from SME simplifications in some jurisdictions, notably the UK, but the exemption is narrower than it looks.⁶⁶
• Transfer pricing is not inherently tax avoidance; the real risks are primary adjustments, secondary adjustments and unrelieved double taxation when two tax authorities take opposing views.⁶⁷