Cluster 02.   2 published articles

Benchmarking

Comparable searches, interquartile ranges, database methodology, and the analytical judgment that separates a defensible study from a well-formatted one

Editor’s note

Benchmarking is where transfer pricing earns or loses its credibility. A poorly-constructed comparables search produces a number that looks defensible on paper and falls apart in audit. A well-constructed one is the difference between a clean controversy resolution and a five-figure penalty.

This cluster covers benchmarking methodology in working detail — how to read a study you didn’t write, how to evaluate the interquartile range, when to reject comparables aggressively, and which databases earn their subscription cost. Written for practitioners and for the in-house tax teams who pay them.


Tayo Odunuga
                  Founder, Transfer Pricing Lab

01 — The pillar article

Methodology · Long read

July 2026

14 min read

How to read a transfer pricing benchmarking study.

Most in-house tax teams accept benchmarking studies as black boxes — pages of comparables they don’t have time to scrutinize. This is a mistake. The framework for pressure-testing any study in under an hour, and the seven red flags that should make you push back.

Read the full article→

In this article
  1. The black-box problem
  2. The 60-minute framework
  3. Method selection: was it analyzed, or assumed?
  4. Functional analysis: matches the business?
  5. Search strategy: documented before or after?
  6. Comparable rejection: principled or post-hoc?
  7. The interquartile range: conclusion or calculation?
  8. Seven red flags worth pushing back on
02 — Supporting articles

Six pieces, each on one part of the work.

The pillar above is the comprehensive starting point. The articles below go deeper on individual elements — the IQR, comparable rejection, database selection, adjustments, and method selection.

01
Published September 2026

8 min read

The interquartile range, demystified

The most-cited number in any benchmarking study, and the most-misunderstood. What the IQR actually measures, what it doesn’t, and why landing inside it isn’t sufficient on its own.

02
Coming soon

10 min read

Comparable rejection: the case for being more aggressive

Most studies err toward keeping comparables to look defensible. The opposite approach — aggressive rejection with documented reasoning — is often the stronger position. When and why.

03
Coming soon

9 min read

When TNMM is the wrong method (and what to use instead)

TNMM is the workhorse of transfer pricing, but it’s also the default chosen when more reliable methods would actually do better. How to recognize the cases where TNMM is the wrong tool.

 

04
Coming soon

11 min read

Adjusting for working capital, operating expenses, and risk

The three adjustments that turn rough comparables into defensible ones — when each applies, how to calculate them, and the documentation pattern that holds up.

 

05
Coming soon

13 min read

Benchmarking databases compared: Orbis vs. EdgarStat vs. RoyaltyRange

An honest comparison of the major transfer pricing databases — what each is good for, what they cost, where the differences matter, and how to choose for your practice.

 

06
Coming soon

10 min read

DIY benchmarking studies: when it’s possible, when it’s not

Most in-house tax teams can do more of their own benchmarking than they think — but not all of it. The specific situations where DIY works, and where outsourcing earns its fee.

 

Other clusters.

01.

Documentation

7 ARTICLES

03.

Methods & methodology

6 ARTICLES

04.

Financial transactions

6 ARTICLES

05.

Controversy & defense

6 ARTICLES

06.

Industry & strategy

6 ARTICLES