Permanent Establishment: When a UK Company Pays Tax in Italy and How to Manage the Risk

Many Italian entrepreneurs managing a company in the United Kingdom believe that the absence of a registered office in Italy is sufficient to avoid tax obligations in the country. This is an incorrect and potentially very costly assumption. The concept of permanent establishment — one of the pillars of international tax law — allows the Italian tax authorities to tax income generated in Italy by a foreign company, even in the absence of any formally registered structure in the country.

For a UK LTD managed by Italian entrepreneurs operating in the Italian market, this risk is real and underestimated. This guide analyses in detail when permanent establishment arises, how it is assessed by the Agenzia delle Entrate, what the tax consequences are and how to structure operations correctly to reduce the risk.

The definition of permanent establishment: regulatory framework

Permanent establishment is governed by three main regulatory sources that interact with each other:

Article 162 of the TUIR
Italian domestic law defines permanent establishment as a fixed place of business through which the foreign enterprise carries out all or part of its activity in Italian territory. The definition requires three cumulative elements: a place of business, the fixed nature of that place (permanence in time and location), and the exercise of activity through it.

OECD Model Tax Convention
The OECD guidelines — incorporated into the vast majority of double tax conventions — define permanent establishment in Article 5 as a fixed place of business through which the enterprise carries out all or part of its activity. The OECD Model is the primary interpretive reference for disputes between Italy and the United Kingdom, governed by the bilateral Convention of 1988.

Italy–UK Convention
Article 5 of the Italy–UK Double Tax Convention substantially follows the OECD definition, applying it to cross-border situations between the two countries. In the event of a dispute, this provision prevails over the domestic legislation of each country.

Fixed place of business PE: when a physical presence generates taxation

A fixed place of business permanent establishment arises when the foreign company has a stable physical structure in Italian territory through which it carries out its activity. Typical examples include:

• offices, including coworking spaces, used regularly by the company or its collaborators
• warehouses, depots or logistics facilities
• laboratories, workshops or production facilities
• construction sites or installation projects exceeding a certain duration

The time threshold for construction sites: for construction, assembly or installation projects, permanent establishment arises only if the project lasts more than 12 months under the standard OECD Model (reduced to 9 months in some bilateral conventions). Below this threshold the site does not constitute permanent establishment.

Coworking and shared offices: this is a frequently underestimated area of risk. A UK LTD whose director regularly uses a coworking space in Italy to carry out the company's activities may constitute a permanent establishment, even without a formal lease agreement. The criterion is the continuity and availability of the space, not ownership.

Statutory exceptions: the following do not constitute permanent establishment when used exclusively for:

• storage, display or delivery of goods
• purchase of goods or collection of information
• preparatory or auxiliary activities
• combinations of these activities

However, these exceptions were partially restricted by the OECD BEPS Action 7 changes, which eliminated the possibility of artificially fragmenting activities to avoid permanent establishment.

Agency permanent establishment: the risk of agents and collaborators

Agency permanent establishment is the most insidious form for UK LTDs, because it can arise even in the absence of any physical structure in the country. It occurs when a person — individual or legal entity — habitually acts in Italy on behalf of the foreign company with authority to conclude contracts in its name.

The constitutive elements are:

• the person acts habitually in Italy (not occasionally)
• acts on behalf of the foreign company
• has authority to conclude contracts binding on the company

Typical risk scenarios for UK LTDs:

Scenario 1 — The Italian director operating from Italy
A director of a UK LTD, resident in Italy, who manages the company's day-to-day activity from Italy — contacts clients, negotiates contracts, issues invoices — is potentially exercising an agency permanent establishment in Italy. The fact that they are also the owner of the company does not eliminate the risk: what matters is where the actual economic activity is carried out.

Scenario 2 — The Italian agent or sales representative
A UK LTD that uses an Italian commercial agent with authority to conclude contracts on the company's behalf creates an agency permanent establishment, unless the agent is an independent agent acting in the ordinary course of their own business.

Scenario 3 — The continuous consultant or collaborator
An Italian professional who works exclusively or primarily for a UK LTD on a continuous basis, performing central functions of the business, may be considered an agency permanent establishment — particularly if they have decision-making or negotiating authority.

The independent agent exception: an agent acting as an independent intermediary in the ordinary course of their own commercial activity does not constitute permanent establishment. However, BEPS Action 7 significantly restricted this exception: an agent who habitually concludes contracts exclusively for a single foreign company can rarely be considered genuinely independent.

Permanent establishment and the digital economy

The digital economy has introduced new categories of risk that traditional permanent establishment rules struggle to address — and which tax authorities are tackling with increasingly sophisticated regulatory tools.

The problem: a UK LTD providing digital services to Italian clients (online consulting, SaaS, e-commerce, digital marketing, platforms) can generate significant income in Italy without any physical presence in the country. Traditional permanent establishment rules — based on physical presence — do not capture these cases.

Regulatory responses in 2026:

Italian Digital Services Tax
Italy has introduced a Web Tax (Digital Services Tax) that applies to companies with digital revenues above certain thresholds derived from Italian users. For UK LTDs with significant volumes of digital service revenues from the Italian market, this tax may apply regardless of the presence of a permanent establishment.

OECD Pillar One
The OECD Pillar One framework — still being implemented in 2026 — provides for a partial reallocation of taxing rights towards market countries for the largest digital multinationals. For SMEs and small UK LTDs, Pillar One does not apply directly (global revenue threshold above €20 billion), but the regulatory trend clearly indicates the direction of travel.

Digital permanent establishment in Italian practice
The Agenzia delle Entrate has already issued several rulings challenging permanent establishment of foreign digital companies based on elements such as: the number of Italian users, the volume of revenues generated from the Italian market, the presence of sales or marketing staff in Italy, and the customisation of services for the Italian market.

Tax consequences of an assessed permanent establishment

When the Agenzia delle Entrate assesses the existence of a permanent establishment of a foreign company in Italy, the tax consequences are significant:

Taxation of attributable income
Income attributable to the activity carried out through the permanent establishment becomes taxable in Italy. The calculation of attributable income follows the separate and independent enterprise principle — the income taxed is what the permanent establishment would have generated had it been an independent enterprise.

Applicable rate
Permanent establishment income is subject to IRES at 24% plus IRAP at 3.9% — for a combined tax burden of 27.9% on attributable income.

VAT obligations
The permanent establishment generates VAT registration obligations in Italy for taxable transactions carried out in Italian territory. Failure to register carries specific penalties in addition to recovery of VAT due.

Penalties and interest
In the event of an assessment for prior years:

• penalty for failure to file: from 120% to 240% of tax due
• penalty for inaccurate filing: from 90% to 180%
• interest at the legal rate increased on the evaded amount
• possibility of criminal penalties in the most serious cases (evasion above certain thresholds)

How to reduce the risk: operational checklist

For a UK LTD operating with Italian customers or partners, here is the checklist of measures to adopt to reduce the risk of permanent establishment:

On the operational structure side:

• ✅ Ensure strategic decisions are made in the UK and documented
• ✅ Avoid Italian collaborators or agents having authority to conclude contracts in the company's name
• ✅ Do not use offices, coworking spaces or physical structures in Italy for the company's activity
• ✅ Limit activities carried out in Italy to preparatory or auxiliary ones (market research, information gathering)

On the documentation side:

• ✅ Retain minutes of board meetings held in the United Kingdom
• ✅ Document that contracts with Italian clients are negotiated and concluded in the United Kingdom
• ✅ Maintain commercial correspondence using UK addresses and contact details
• ✅ Ensure invoices are issued from the UK address and paid into UK bank accounts

On the tax side:

• ✅ Obtain a preventive assessment of permanent establishment risk before starting significant operations in Italy
• ✅ Verify the applicability of the Italian Digital Services Tax for digital activities towards the Italian market
• ✅ Consider the Italy–UK Convention to identify applicable protections

Common mistakes to avoid

• Believing that having only Italian clients does not create permanent establishment — Italian clients are not the problem in themselves, but the operational methods through which they are served can be
• Allowing Italian collaborators to conclude contracts in the name of the UK LTD — this is the most classic case of agency permanent establishment
• Using Italian coworking spaces as an operational base for the company, even without a formal contract
• Failing to consider the permanent establishment risk for digital activities towards the Italian market, relying on the absence of physical presence
• Not documenting where decisions are made and contracts concluded, losing the primary defence in the event of a challenge

FAQ

What is permanent establishment and when does it apply to a UK LTD?
Permanent establishment is the stable economic presence of a foreign company in a country, which triggers the obligation to pay tax in that country on attributable income. For a UK LTD, it arises in Italy when the company has a fixed place of business in Italy (fixed place PE) or when a person habitually acts in Italy on behalf of the company with authority to conclude contracts (agency PE).

Does an Italian director working from Italy for their UK LTD create a permanent establishment?
Potentially yes. If the director manages the company's operational activity from Italy — contacts clients, negotiates contracts, makes commercial decisions — an agency permanent establishment in Italy may arise. The risk depends on the continuity and significance of the activity carried out from Italy and the existence of representative authority towards third parties. A preventive assessment is essential.

What is the difference between fixed place and agency permanent establishment?
Fixed place permanent establishment is based on physical presence: an office, warehouse, laboratory or any stable physical structure from which the foreign company carries out its activity in Italy. Agency permanent establishment is independent of physical presence and is based on the activity of a person — agent, collaborator or director — who habitually acts in Italy on behalf of the company with authority to conclude binding contracts.

What are the penalties for an undeclared permanent establishment?
In the event of an assessment for an undeclared permanent establishment, the Agenzia delle Entrate recovers IRES (24%) and IRAP (3.9%) on attributable income, with penalties ranging from 90% to 240% of tax due depending on the type of violation, plus interest on the evaded amount. In the most serious cases (evasion above criminal thresholds) criminal penalties may also apply.

Does the Italy–UK Convention protect against permanent establishment?
The Italy–UK Convention defines the criteria for determining when a permanent establishment exists and limits Italy's right to tax attributable income. However it does not eliminate the risk: if the conventional criteria are met, taxation in Italy is legitimate. The Convention provides protection primarily in borderline situations and interpretive disputes between the two tax authorities.