Transfer Pricing Methods: There Is No Hierarchy, Except When There Is

Ask whether the OECD Transfer Pricing Guidelines impose a hierarchy of methods and you will get two confident answers, both wrong. The older answer is that there is a strict hierarchy. The fashionable answer is that there is none, only a most-appropriate-method rule. The Guidelines actually do both, and the two paragraphs that settle it sit next to each other.

The five methods, as the Guidelines name them

Paragraph 2.1 divides them into two families: "Traditional transaction methods are the comparable uncontrolled price method or CUP method, the resale price method, and the cost plus method. Transactional profit methods are the transactional net margin method and the transactional profit split method."

Worth noting that the five are not a closed list. Paragraph 2.9 confirms that groups "retain the freedom to apply methods not described in these Guidelines", with one condition — such other methods "should however not be used in substitution for OECD-recognised methods where the latter are more appropriate."

The rule: most appropriate method

Paragraph 2.2 states the principle, and the second half of it is the part that kills the strict-hierarchy reading: "The selection of a transfer pricing method always aims at finding the most appropriate method for a particular case ... No one method is suitable in every possible situation, nor is it necessary to prove that a particular method is not suitable under the circumstances."

So there is no obligation to work down a ranked list eliminating methods as you go. That was the pre-2010 position and it is gone. A taxpayer does not have to demonstrate why the CUP method fails before reaching for a transactional net margin analysis.

The tie-breaker: and this is the half that gets dropped

Paragraph 2.3 then adds a preference that only bites in one specific situation: "where, taking account of the criteria described in paragraph 2.2, a traditional transaction method and a transactional profit method can be applied in an equally reliable manner, the traditional transaction method is preferable to the transactional profit method. Moreover, where ... the comparable uncontrolled price method (CUP) and another transfer pricing method can be applied in an equally reliable manner, the CUP method is to be preferred."

Two preferences, nested. On a tie of reliability, traditional beats transactional profit. And within that, CUP beats the rest.

The trigger is the whole point. The preference applies only where two methods "can be applied in an equally reliable manner". It is not a starting presumption and it is not a tie-break you reach for when the analysis is inconvenient. But where the reliability genuinely is equal, the Guidelines are not indifferent, and an analysis that picks a profit method over an equally reliable CUP has made a choice the Guidelines do not support.

So the accurate formulation is: a most-appropriate-method rule with a residual preference on equal reliability. Neither "there is a hierarchy" nor "there is no hierarchy" survives contact with both paragraphs.

One method is enough

A related point that saves real work. Paragraph 2.12 is explicit: "The arm's length principle does not require the application of more than one method for a given transaction ... these Guidelines do not require either the tax examiner or taxpayer to perform analyses under more than one method."

Corroborating a primary analysis with a secondary method can be good practice and is sometimes commercially sensible. It is not a requirement, and a documentation file that runs two full analyses because someone believed it was mandatory has spent budget the Guidelines never asked for.

What the methods are for

All of this sits underneath the arm's length principle itself, whose authoritative statement the Guidelines locate in Article 9(1) of the OECD Model Tax Convention: where conditions between associated enterprises "differ from those which would be made between independent enterprises, then any profits which would, but for those conditions, have accrued to one of the enterprises" may be included in that enterprise's profits and taxed accordingly.

The Guidelines describe their own approach as "treating the members of an MNE group as operating as separate entities rather than as inseparable parts of a single unified business", and place comparability at the centre: the analysis of controlled and uncontrolled transactions "is at the heart of the application of the arm's length principle." Method selection is downstream of comparability, not a substitute for it — choosing a method before understanding the comparables is the error that no amount of correct method theory fixes.

Currency note

The paragraphs above are from the January 2022 edition of the Guidelines, which is the operative text for Chapters I to III and V. There is live project activity but it does not touch method selection: a discussion draft revising Chapter VII on intra-group services was out for consultation from 1 June to 22 July 2026, with a public consultation meeting in November 2026. The OECD states that those revisions are "not intended to change the general principles" underlying transfer pricing analysis, and in any case a discussion draft is not agreed guidance.

For the documentation side of the same regime, see our piece on the EUR 750 million CbCR threshold and what people get wrong about it. The broader pattern — an international standard whose practical effect depends on domestic implementation — also drives the EU's IFRS 17 annual cohort exemption, and our list of international accounting standards covers the reporting framework alongside it.

The Guidelines are published by the OECD, and a taxpayer's actual obligations arise from the domestic law implementing them rather than from the Guidelines themselves.