Transfer Pricing Between UK and Italian Companies: When It Applies and How to Document It

If you hold a company in the United Kingdom and one in Italy — or any two or more companies linked to each other in different countries — every economic transaction between these entities is not fiscally neutral. Payments of management fees, royalties, interest on intra-group loans, or the straightforward purchase and sale of goods and services between the two companies must comply with the arm's length principle: they must take place on the same terms that would apply between independent parties in the open market.

This is the fundamental rule of transfer pricing — one of the most complex and most closely monitored areas of modern international taxation. In 2026, with both HMRC and the Italian Agenzia delle Entrate equipped with increasingly sophisticated analytical tools, ignoring this topic can cost far more than the advisory work needed to manage it correctly.

What is the arm's length principle and why does it exist

The arm's length principle — indicating the absence of conditioning between the parties — is the regulatory foundation of transfer pricing at international level. It is enshrined in Article 9 of the OECD Model Tax Convention and incorporated into both Italian law (Article 110, paragraph 7 of the TUIR) and British law (Part 4 TIOPA 2010).

The principle starts from a simple observation: two companies in the same group are not independent parties. They could therefore set the prices of intra-group transactions artificially — for example by charging very high royalties from the high-tax company to the low-tax one — to shift profits towards the more fiscally favourable jurisdiction.

To prevent this, the tax regulations of countries worldwide require that intra-group transactions take place as if the two parties were independent — that is, at market price.

When transfer pricing rules apply

Transfer pricing rules apply whenever there are economic transactions between related parties — companies belonging to the same group through direct or indirect control.

In the UK–Italy context, the most frequent situations are:

A UK holding that controls an Italian SRL
Transactions between the two — management fees, loans, trademark licences — are all subject to transfer pricing rules in both countries.

A UK LTD with an Italian shareholder who also holds an SRL
If the shareholder controls both companies, transactions between the LTD and the SRL may also be subject to the rules, depending on the control structure.

A UK LTD that purchases services from an Italian consultant with a shareholding in the company
If the consultant is also a shareholder or holds a position of control, the fees paid may be subject to arm's length rules.

Application thresholds in the UK context:
HMRC applies transfer pricing rules differently depending on company size:

• Large companies: full application of rules with mandatory comprehensive documentation
• Medium-sized companies: rules apply with some documentation exemptions
• Small companies: exemption from most formal documentation obligations, but the arm's length principle remains applicable

A small company for UK purposes has fewer than 250 employees and turnover below £36 million or total assets below £18 million. Most LTDs managed by Italian entrepreneurs fall into this category — but this does not eliminate the risk of challenge if intra-group transactions are manifestly non-arm's length.

Main categories of intra-group transactions subject to transfer pricing

Management fees
The fee that a group company — typically the holding — charges to operating subsidiaries for management, coordination and strategic support services. Must reflect the real value of services provided, documented by a detailed description of activities performed and a comparison with market prices for equivalent services.

Royalties and intellectual property licences
Fees paid for the use of trademarks, patents, software or other intangible assets held by a group company. Among the most closely monitored transactions by both tax authorities because historically used to shift profits to low-tax jurisdictions.

Interest on intra-group loans
Interest rates applied to financing between group companies must correspond to rates that would apply between independent parties for loans with similar characteristics. Both HMRC and the Agenzia delle Entrate use market benchmarks to verify the appropriateness of rates applied.

Purchase and sale of goods and services
If one group company purchases goods or services from another, the price must correspond to market value. This applies to both tangible goods and professional services.

Transfer of intra-group assets
The sale of tangible assets, intangibles or shareholdings between group companies must take place at market value — not at historical cost or a conventional value.

Methods for determining the arm's length price

The OECD guidelines — adopted by both countries — identify five main methods for determining the arm's length price of a transaction:

Comparable Uncontrolled Price Method (CUP)
Compares the price of the intra-group transaction with the price applied for similar transactions between independent parties. The preferred method when reliable comparable transactions exist in the market.

Resale Price Method (RPM)
Starts from the price at which a product purchased from a related company is resold to an independent party, and subtracts an appropriate gross margin. Suitable for distribution activities.

Cost Plus Method
Starts from the costs incurred by the intra-group supplier and adds an appropriate profit margin. Suitable for goods manufacturing or service provision.

Transactional Net Margin Method (TNMM)
Compares the net operating margin achieved by the company in the intra-group transaction with that achieved by comparable parties in independent transactions. The most widely used method in practice.

Profit Split Method
Allocates the combined profits of the group between the participating entities based on the relative contributions of each. Used primarily for highly integrated transactions or for the valuation of unique assets.

Documentation obligations in 2026

In the UK context — HMRC:
Large and medium-sized companies are required to maintain contemporaneous documentation of transfer pricing policies and prices applied in intra-group transactions. HMRC follows OECD guidelines on the Master File and Local File — two separate documents describing respectively the group structure at global level and the specific transactions of the UK entity.

For small companies (the majority of UK LTDs managed by non-residents) there are no formally prescribed documentation obligations under law, but it is strongly recommended to maintain internal documentation demonstrating the appropriateness of prices applied.

In the Italian context — Agenzia delle Entrate:
Italy has implemented the OECD guidelines requiring companies with cross-border intra-group transactions to prepare suitable documentation (the so-called documentation set) composed of Master File and Country File. Companies that prepare and notify this documentation set to the Agenzia delle Entrate benefit from penalty protection — exemption from administrative penalties in the event of an assessment, even if the price is adjusted.

Notification of the existence of the documentation must be made with the income tax return. Companies that do not prepare documentation, in the event of an assessment with adjustment, are subject to penalties from 90% to 180% of the additional tax assessed.

Concrete risks for UK–Italy structures

Risk 1 — Undocumented management fees
A UK holding that charges management fees to an Italian SRL without a detailed description of services provided and without a comparability analysis is vulnerable to challenges from both authorities. The Agenzia delle Entrate may disallow all or part of the deduction in the Italian SRL; HMRC may challenge that the holding's revenues have been understated.

Risk 2 — Intra-group loans at zero or nominal interest
Financing between related companies without applying interest — or with nominal rates — is one of the areas of greatest attention for both tax authorities. In the absence of a solid commercial justification, a market interest rate is imputed for tax purposes.

Risk 3 — Disproportionate royalties
Fees for the use of trademarks or software set at levels well above the market value of the intangible assets may be adjusted. HMRC has developed specific tools for analysing intangible asset transactions.

Risk 4 — Lack of substance in the receiving entity
If the UK holding receives management fees or royalties but has no staff, operational structure or genuine capacity to perform the services invoiced, the transaction may be disallowed by both HMRC and the Agenzia delle Entrate.

How to structure correctly: preventive measures

Formalise transactions with written contracts
Every intra-group transaction — management fees, loans, royalties, service agreements — must be governed by a written contract specifying: the parties, the nature of the transaction, the price, payment terms and duration. The contract must be in place before the transaction begins, not retrospectively.

Carry out a comparability analysis
Before setting the price of an intra-group transaction, verify that it corresponds to market value. This is done by comparing the transaction with similar transactions between independent parties, using specialist databases (Bureau van Dijk, Royalty Range) or sector analyses.

Maintain contemporaneous documentation
Documentation must be prepared at the time of the transaction — not following a tax audit. It must include: description of transactions, methodology used, comparability analysis, and justification of the price applied.

Notify the documentation set to the Agenzia delle Entrate
If the Italian SRL has significant cross-border intra-group transactions, prepare the Master File and Country File and notify their existence with the income tax return. Penalty protection is worth the complexity of preparation.

Consider an Advance Pricing Agreement (APA)
For significant and recurring transactions, it is possible to request a preventive agreement with HMRC and/or the Agenzia delle Entrate that fixes in advance the method for determining the arm's length price for a period of years. APAs eliminate uncertainty and most of the risk of challenge.

Common mistakes to avoid

• Setting management fees or royalties without a preventive comparability analysis — the risk of challenge is very high
• Failing to formalise intra-group transactions with written contracts — in the absence of a contract, it is difficult to demonstrate the nature and terms of the transaction
• Applying zero or nominal interest rates on intra-group loans without commercial justification
• Preparing documentation only after receiving an assessment notice — too late to benefit from penalty protection
• Failing to consider the combined impact of adjustments in both countries: an upward adjustment in Italy does not automatically generate a corresponding downward adjustment in the UK — a mutual agreement procedure between the tax authorities may be necessary

FAQ

What is transfer pricing and why does it concern my UK LTD?
Transfer pricing refers to the prices applied in economic transactions between companies in the same group. It concerns your UK LTD if it has transactions with a connected Italian company — for example an SRL of which you are also the owner. The rules require that these transactions take place on the same terms that would apply between independent parties in the market, to prevent profits from being artificially shifted to the more fiscally favourable jurisdiction.

My UK LTD is a small company — do I still need to worry about transfer pricing?
Yes, though to a lesser extent than large companies. Small UK companies are exempt from the formal documentation obligations prescribed by HMRC, but the arm's length principle remains applicable. If intra-group transactions do not reflect market prices, HMRC can still challenge them. On the Italian side, documentation obligations apply to all companies with significant cross-border transactions.

What is the penalty for non-compliance with transfer pricing rules in Italy?
In the event of an assessment with transfer pricing adjustment, the Agenzia delle Entrate applies penalties from 90% to 180% of the additional tax assessed. Companies that have prepared and notified the appropriate documentation (Master File and Country File) benefit from penalty protection — exemption from penalties even in the event of an adjustment.

How is the arm's length interest rate determined for an intra-group loan?
The arm's length rate for an intra-group loan is determined by comparing the loan with similar financing agreed between independent parties, taking into account: amount, duration, currency, guarantees and the debtor's creditworthiness. Both HMRC and the Agenzia delle Entrate periodically publish reference rates that can be used as basic benchmarks, but a specific comparability analysis is always advisable for significant amounts.

What is an Advance Pricing Agreement and when is it worth requesting one?
An Advance Pricing Agreement (APA) is a preventive agreement with the tax authority that fixes in advance the method for determining the arm's length price for specific intra-group transactions, for a period of years (typically 3–5). It is worth pursuing when transactions are significant, recurring and complex. It eliminates tax uncertainty and protects against future challenges. It can be unilateral (with one authority) or bilateral (with both authorities, coordinated through the mutual agreement procedure).