Economic Substance Rules in Guernsey | Filing Guide

Understanding Economic Substance Regulations in GuernseyCopy link to section

The economic substance regulations in Guernsey require certain companies and partnerships that earn income from defined activities to show genuine economic presence on the island, rather than booking profits there without real operations behind them. These rules sit under the Income Tax (Substance Requirements) (Implementation) Regulations 2021, with the Guernsey Revenue Service acting as the supervisory and filing authority. They reach Guernsey tax-resident companies and, since 2021, many Guernsey partnerships that carry on one of nine geographically mobile activities. This article explains who is caught, what the substance test demands, how compliance is evidenced, and what happens when an entity falls short. For a foreign owner or adviser running a structure through the island, the official economic substance hub is the starting reference; the regime is most relevant to holding, financing, IP, and group-service vehicles owned from outside the jurisdiction.

Why Guernsey Introduced Economic Substance RequirementsCopy link to section

The regime grew out of the EU Code of Conduct Group's review of low-tax centres. While the group raised no concern over the island's tax transparency or anti-BEPS record, it flagged the absence of a legal substance requirement, warning that registered profits might not match real activity.

That concern reached the island in a letter in November 2017, with a commitment to act by the end of December 2018. Guernsey, Jersey, and the Isle of Man developed their legislation together, and on 12 March 2019 the EU Council confirmed the commitment had been met and kept the island off the list of non-cooperative jurisdictions.

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The Legal Framework and Governing LegislationCopy link to section

The controlling instrument is the Income Tax (Substance Requirements) (Implementation) Regulations 2021, issued under the Income Tax (Guernsey) Law 1975. Originally implemented in December 2018 and in force from 1 January 2019, the rules were amended on 15 June 2021 to consolidate earlier versions and extend their reach to partnerships.

The enabling primary law, an amending Ordinance approved by the States of Deliberation on 28 November 2018, gave the detailed Regulations their footing, with the rules taking effect from 1 January 2019. A separate striking-off instrument for limited partnerships followed in 2021 to support enforcement against non-compliant firms.

The Director of the Guernsey Revenue Service is empowered to issue guidance on how the rules are administered and enforced. Practical interpretation rests heavily on the tri-island guidance issued jointly with Jersey and the Isle of Man on 22 November 2019, with further partnership guidance on 21 December 2021.

Which Entities Are In Scope: Companies and PartnershipsCopy link to section

For companies, the test turns on tax residence rather than where the firm was formed. A company is treated as tax resident on the island if it was incorporated there and is neither centrally managed and controlled elsewhere nor recognised as resident in another jurisdiction taxing corporate income at 10% or more, or if it was incorporated abroad but is centrally managed and controlled from the island.

The term "companies" covers all vehicles taxed as companies. An incorporated cell is treated separately from its incorporated cell company, while a protected cell company and its cells count as a single entity. Bodies granted exemption under the Income Tax (Exempt Bodies) (Guernsey) Ordinance, 1989 are still caught if they carry on a relevant activity.

Partnerships entered the regime in stages. The rules apply to certain newly formed partnerships from 1 July 2021 and to many existing ones from 1 January 2022.

In-scope partnerships include general partnerships formed and operating on the island, limited partnerships under the Limited Partnerships (Guernsey) Law, 1995, limited liability partnerships under the 2013 LLP law, and foreign partnerships whose place of effective management sits on the island. Place of effective management is the place where the management and commercial decisions for the business are substantially made; for a limited partnership, this usually follows the location of the general partner.

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The Relevant Activities Covered by the RegimeCopy link to section

A body is subject to the substance requirements only if it is tax resident, carries on a relevant activity, and earns gross income from that activity during an accounting period. The nine categories were all identified by the OECD's Forum on Harmful Tax Practices as geographically mobile:

• Banking
• Insurance
• Fund management
• Financing and leasing
• Headquartering
• Shipping
• Distribution and service centres
• Pure equity holding
• Intellectual property holding

Several categories carry specific definitions. Fund management means exercising managerial functions over investments or underlying assets, where the entity is licensed under the Protection of Investors (Bailiwick of Guernsey) Law, 1987 and acts in connection with a collective investment scheme. Headquartering covers supplying senior management, or assuming and controlling material risk, for non-resident intra-group persons.

Financing and leasing means providing credit facilities of any kind for consideration, outside the banking, fund management, and insurance categories. Distribution and service centres covers buying goods from non-resident group members for resale, or providing services to such members. IP holding carries its own enhanced rules in higher-risk cases, addressed later.

The same activity list applies to partnerships as to companies. A tax-resident company must satisfy the test only for a period in which it actually receives income from a relevant activity, or from being a pure equity holding company or IP business.

Entities and Bodies That Are Out of ScopeCopy link to section

Not every island vehicle is caught. Collective investment schemes regulated by the GFSC under the 1987 investor protection law sit outside the regime, except where the fund is self-managed; a self-managed fund with no separate manager must meet the test for activities that generate gross income.

Partnerships fall out of scope in three situations: where all partners are individuals subject to Guernsey income tax; where the partnership is a domestic local business not part of a multinational group; or where it is formed under a qualifying jurisdiction. A qualifying jurisdiction is one that imposes substantially similar substance requirements, or where the highest rate of income tax on any person is at least 10%.

The list above is kept under review. A partnership whose place of effective management lies in a jurisdiction taxing income above 10% is not a resident partnership and faces no substance test at all.

Companies that are not tax resident on the island, because they are centrally managed and controlled in a jurisdiction taxing corporate income at 10% or more, sit outside the company rules entirely. Pure equity holding companies are a separate case: they are not excluded, but face a reduced version of the test.

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The Economic Substance Test ExplainedCopy link to section

A relevant entity must satisfy the substance test for each relevant activity that produces gross income, and must be able to demonstrate that compliance for every accounting period in which the rules bite. Three conditions sit at the heart of the test.

The activity must be directed and managed on the island; the core income-generating activity must be carried on there; and the firm must have adequate people, premises, and expenditure on the island in relation to that activity. Each limb is examined separately below.

Directed and Managed in GuernseyCopy link to section

This limb looks at where strategic control sits. An activity is directed and managed on the island where the governing board meets there with a frequency suited to the level of decision-making required, a quorum is physically present at those meetings, strategic decisions are taken and minuted there, the board collectively holds the knowledge and expertise to discharge its duties, and the records are kept on the island.

Not every meeting must be held on the island, but guidance expects the majority to be. Isolated decisions taken elsewhere are tolerable, provided the firm can show the decisions and core activity carried out on the island clearly outweigh those taken outside in both quality and quantity.

For a company the relevant body is the board of directors; for a partnership it is the management committee or similar governing body responsible for strategic decisions. Pure equity holding bodies are exempt from this limb altogether.

Core Income-Generating Activities, Adequate People, Premises, and ExpenditureCopy link to section

Core income-generating activity, often shortened to CIGA, means the substantive functions that actually generate the relevant income. All of an entity's CIGA must be carried out on the island, whether by the entity itself or by another party; where another party performs them, the entity must be able to monitor or control that performance.

Where CIGA involve making a decision rather than implementing one, the majority of those making the decision must be physically on the island when it is made. The Regulations list CIGA by activity type but the list is not exhaustive, and back-office functions such as IT support do not count. A firm only needs to carry out the CIGA it actually undertakes, not every item on the list.

For IP companies, the core functions are research and development for patents and similar assets, and marketing, branding, and distribution for marketing intangibles such as trademarks. In exceptional cases other relevant functions may qualify, though not for high-risk IP companies.

Outsourcing is permitted, including to a third-party corporate services provider or to group companies, so long as the CIGA itself is performed by an island entity. Where an island-based administrator is relied upon, its resources count toward the test, but personnel cannot be double-counted across several entities.

On people, premises, and expenditure, the requirements are proportionate to the level of activity:

• People — an adequate number of suitably qualified staff physically present on the island, whether employed by the entity or another party, and whether on short or long contracts; directors count as employees.
• Premises — adequate physical presence, including offices, proportionate to the activity carried on.
• Expenditure — adequate spending on the island, judged on the facts, with taxable income that is commensurate with the core activity performed there.

Special Rules for Pure Equity Holding Companies and IP BodiesCopy link to section

A pure equity holding company is one whose primary function is acquiring and holding shares or equitable interests in other companies and that carries on no commercial activity. These are treated as low risk and face a lighter test: compliance with applicable corporate law, plus an adequate level of people and adequate physical presence proportionate to holding and managing those interests. They are not required to meet the directed-and-managed limb.

A holding company that takes on other commercial activity loses this status. It may then fall within one of the relevant activities and trigger the full substance test.

IP bodies face the opposite treatment, with enhanced requirements. A high-risk IP body is one that acquired its IP either intra-group or in return for funding research and development by another person outside the island, and that licenses the IP to non-resident intra-group persons or otherwise earns IP income from activities performed by such persons.

A high-risk IP body is presumed to have failed the substance test, though the presumption can be rebutted. To do so, it must state its intention in the income tax return and attach evidence including detailed business plans explaining why the IP is held on the island, evidence that decisions are taken there, and information on employees covering experience, contractual terms, and length of service.

How to Meet and Evidence Your Substance ObligationsCopy link to section

Compliance is assessed through the annual tax return, not a standalone substance form. The corporate return is due by 30 November in the calendar year after the year of charge; the 2025 return is available, with a submission deadline of 30 November 2026.

The return must identify the relevant activity, set out gross income and operating expenditure broken down by activity, confirm the CIGA conducted for each, and state whether any CIGA were outsourced together with the relevant details. Financial statements must be filed alongside it, and the Revenue Service may seek supporting documents such as details of premises to confirm sufficient on-island activity.

Partnerships have a separate registration step. The Revenue Service has issued Form 715 for partnership registration, due by 14 July after the end of the first year in which the rules apply.

For island-incorporated companies, LLPs, and LPs, a tax reference is set up by the Revenue Service from Registry data; general and foreign partnerships complete a separate Partnership Registration Form. Partnerships file their returns online with financial statements attached.

Records sit at the centre of evidencing the test. All minutes and entity records must be kept on the island, and the enhanced corporate return captures business activity, gross income, expenses and assets, premises, and the number of employees expressed as full-time equivalents. A broad anti-avoidance rule lets the Revenue Service disregard any arrangement, omission, or decision whose main purpose is to dodge a substance obligation.

Two points are not settled in public sources. No specific statutory retention period in years for substance records was identified, so apply the retention rules under corporate or partnership law and current guidance. No separate government fee for substance filing was found either; the standard corporate return fee structure applies, and the published schedule should be checked.

Consequences of Failing the Economic Substance TestCopy link to section

Penalties escalate with repeated default. The figures below apply to companies; high-risk IP companies face a distinct, higher scale whose specific amounts are not confirmed in public sources.

A partnership that fails to register faces a penalty of up to £10,000 for negligence and up to £20,000 for fraud. On a failed test, the Director will spontaneously exchange relevant information with the competent authorities where the immediate parent, ultimate parent, or ultimate beneficial owners are tax resident, where exchange arrangements exist.

Strike-off is the sharpest tool. It can occur from the first accounting period of default if the Director judges there is no realistic prospect of compliance, and it can reach both the corporate register and, where relevant, the LLP register for repeated failures.

Individuals are exposed too. Financial and criminal penalties apply to anyone who fails to provide information, supplies inaccurate information, or obstructs the Director, with specific criminal sanctions for false statements or false documents. The Director may compel delivery of documents by written notice and may enter business premises and inspect records, subject to occupier consent, at least one week's notice, and the Bailiff's approval.

A penalty can be appealed to the Guernsey Tax Tribunal within 30 days of the notice. Either side may then appeal to the Royal Court on a point of law within 21 days of the Tribunal's decision.

ConclusionCopy link to section

For most foreign-owned structures, the substance question is binary: if your island vehicle earns income from one of the nine activities, it must put real decision-making, people, and spending on the ground, and a pure equity holding company gets a lighter test rather than a free pass. The penalties for ignoring this, escalating to six figures and strike-off, make the regime one to address at the structuring stage, not after the first return is due.

The next step worth weighing is an honest mapping of where your activity income actually arises and where decisions are genuinely taken, because that mapping determines whether the full test, the reduced holding-company test, or no test at all applies to you.

How Expanship Can Help Your Business in GuernseyCopy link to section

Expanship supports foreign owners in meeting the substance test, from assessing which relevant activity applies and structuring board and decision-making arrangements to preparing the annual return and partnership registration that evidence compliance. That work sits within a wider set of services for an entity owned from outside the island.

• Company and partnership formation, including selection of the right vehicle
• Registered agent and registered office on the island
• Ongoing compliance and management of filings and deadlines
• Accounting and bookkeeping, including financial statements filed with the return
• Economic-substance and beneficial-ownership support
• Introductions to banking partners

To discuss your structure and substance position, contact Expanship Guernsey.

Frequently Asked QuestionsCopy link to section