Size is the wrong starting point, and it is where most groups go wrong. The requirement generally turns on whether a transaction with a related non-resident happened at all, not on how large it was, and in some countries a single intercompany invoice is enough to bring it into play. There is also a second reason not to reason from value: what documentation buys you in many jurisdictions is protection against penalties, and penalty exposure is a function of the adjustment a reviewer could propose, which is not knowable in advance. Establish whether the transaction is caught, then consider proportionality.
When is transfer pricing documentation required?
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Requirements differ: some jurisdictions ask for contemporaneous documentation as a penalty-protection condition, others impose a mandatory report regardless of value. The requirement usually turns on whether a transaction happened at all, not on how large it was.
Whether you need it
Requirements differ: some jurisdictions ask for contemporaneous documentation as a penalty-protection condition, others impose a mandatory report regardless of value. The information return you file usually asks whether documentation exists, so the answer is on the record either way.

Where it does not apply
The documentation question is not about size. It is about whether a transaction with a related non-resident happened at all — and, in some countries, a single intercompany invoice is enough.
How to get this moving
The full treatment — who it binds, the deadline, the penalty and the fixed fee — is on Do I need transfer pricing documentation?. If that describes your position, the next step is a short call — not a form.
Reviewed for accuracy for the 2025 and 2026 filing seasons by Udit Gupta, International Tax, Cross-Border Tax & Transfer Pricing Expert, Legal Quotient Consultants. Written as general guidance, not as a recommendation for your situation. Talk it through with us before acting on it.
Files that look like this one
A group with one intercompany invoice a year and no documentation
The company charged its foreign parent once annually for services and had assumed the amount was too small to engage any requirement. The requirement turned on whether a transaction with a related non-resident had occurred, and one had. The work was to describe the dealing, establish the functions each party performed, and support the price on that basis, in time to be contemporaneous rather than after a query. The engagement produced documentation for the year and an information return whose answer about the existence of documentation was accurate.
Read how this one runsOne analysis, two jurisdictions, two different obligations
A group with operating companies in two countries faced a penalty-protection documentation condition on one side and a mandatory report irrespective of value on the other. Each local adviser had been proposing to start from scratch, which risked two incompatible descriptions of the same dealing. We ran the functional and economic analysis once and then built the two deliverables from it, each to its own requirement and filing date. The engagement produced a consistent pair of files and a calendar showing what each country needs and when.
Read how this one runsAn information return that had overstated the position
A previously filed information return indicated documentation existed for a year in which nothing had been prepared. The person who ticked the box had left, and the client came to us on discovering it. We separated the two problems: the absence of documentation, and a disclosure on the record that was not accurate. The work involved establishing what could properly be said about the year, preparing the analysis, and advising on the correction of the filed answer. The engagement produced the documentation and a corrected disclosure.
Read how this one runsStarting with the agreement rather than the analysis
A service charge had been flowing between related companies for years with no written agreement behind it, and the client wanted documentation prepared quickly. Documenting a price under an agreement nobody can produce achieves very little, so the order of work was reversed. We established what services were actually being provided and by whom, had the intercompany agreement drawn to reflect that, and only then prepared the analysis supporting the charge. The engagement produced the agreement and documentation that rests on it rather than beside it.
Read how this one runsResponding when documentation was requested after the fact
A revenue authority asked a client to produce documentation for a year in which none had been prepared, within the window it allows. We were candid with the client that material assembled at this point does not necessarily secure the penalty protection contemporaneous documentation offers. The work was to build the strongest supportable description of the dealings from the contracts, ledgers and correspondence that did exist, and to be clear in the file about when it was prepared. The engagement produced the response and a written assessment of its limits.
Read how this one runsMapping new intercompany flows before a restructuring
A group was moving functions between countries and wanted to know what the new structure would oblige it to prepare. The useful question was not whether transfer pricing applied in general but which specific new flows would create a documentation obligation, in which jurisdiction, and on what timing, including flows the operating teams had not thought of as transactions at all. The engagement produced a flow-by-flow schedule of obligations and a written note the group could hand to each local adviser, before the restructuring took effect.
Read how this one runsThe Local File That Has to Match the Accounts
A local file describes the entity's own controlled transactions and ties them to its statutory figures. Where the two do not reconcile, that is what an examiner opens with.
Read how this one runsA Margin Defended With a Benchmarking Set That Fits the Facts
A comparables set is only as good as the screening behind it, and a rejected set takes the margin with it. The study selects the tested party first, screens on function rather than on industry code, and records why each comparable survived.
Read how this one runsAll case studies — every published engagement in one place.
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What people ask us about Do I need transfer pricing documentation?
Quite possibly. Requirements differ by jurisdiction: some ask for contemporaneous documentation as a condition of penalty protection, others impose a mandatory report regardless of value. Under either model one transaction with a related non-resident can be enough, because what is being tested is the pricing of that dealing and not the scale of your operations. The one transaction cases are also the ones most often left undocumented, on the reasoning that there is nothing to write about. There is: the dealing has to be described, the parties' roles set out, and the basis of the price supported.
In the jurisdictions that treat documentation as a condition of penalty protection, the requirement is for it to be contemporaneous, which is a timing condition and not just a content one. Documentation assembled after a reviewer asks for it may still be useful evidence, but it does not necessarily give you the protection the rule offers to a group that had it in hand. Elsewhere the obligation is a mandatory report with its own filing date. Either way the deadline is not the day the question is asked, which is when most groups first look at the subject.
You have answered the question, and the answer is on the record. The information return you file usually asks whether documentation exists, which means the position is disclosed either way and does not depend on anyone examining the file to come to light. That has two consequences worth thinking about. A negative answer is visible and is the kind of thing that informs how a file is looked at. And an answer that says documentation exists when it does not is a different and more serious problem than not having it. Answer accurately, then fix the underlying gap.
A charge from a related non-resident is a transaction with a related non-resident, so start from the assumption that it is caught and then check the jurisdictions involved. Management and service charges attract attention because they are easy to invoice and hard to evidence: what was actually done, for whom, and why the amount corresponds to it. That is precisely the ground documentation covers. If the intercompany agreement is thin or missing, deal with that first, because documentation supporting a price under an agreement nobody can produce carries very little weight.
Assume both sides need to be satisfied and then check what each actually asks for, because requirements differ. One country may treat contemporaneous documentation as a penalty-protection condition while the other imposes a mandatory report irrespective of value, with different content and different timing. The economic analysis of a single dealing does not need doing twice, but the deliverables usually do, and they must not contradict each other. Two files describing the same transaction in incompatible terms is a worse position than one file, and it is a common result of each side instructing separately.
If your company transacts with a related party in another country, in substance yes — the question is how much. Documentation is what shifts the burden: prepared before the filing deadline it evidences that your pricing was set on arm's length terms, and its absence is what turns a pricing adjustment into a penalty in several regimes. Volume of related-party dealings drives whether you need a local file, a master file, or a full benchmarking study. See do I need transfer pricing documentation.
Five, in two groups. Three compare transactions: comparable uncontrolled price, resale price, and cost plus. Two compare profits: the transactional net margin method, and profit split. The OECD asks for the most appropriate method on the facts rather than a fixed hierarchy; the United States applies a best-method rule to similar effect. Selection is itself a documented judgment, and a method chosen without recording why is a weak position under audit. See our transfer pricing work.



