What is Personal Income Tax (Guernsey)?
Guernsey taxes individuals resident in the island at a flat rate of 20% on worldwide income. There is no higher rate band, no capital gains tax, and no inheritance tax in Guernsey. Residents benefit from various personal allowances and reliefs that reduce the effective rate. Non-residents are taxed only on Guernsey-sourced income.
Current Rate (Calendar year (1 January to 31 December))
20% flat rate on all income above personal allowances
Example
A Guernsey-resident director receiving a £100,000 salary and £50,000 dividend from their company pays 20% on income above allowances. With the 2025 personal allowance of £15,000, taxable income is £135,000, giving a tax bill of £27,000.
How Personal Income Tax (Guernsey) works in Guernsey
Guernsey's personal income tax system is straightforward by design. The single 20% flat rate applies regardless of income level — there is no progression to a higher band as you earn more.
**Residency** A person is resident in Guernsey for tax purposes if they are present in the island for 182 days or more in a calendar year, or 91 days or more for three consecutive years averaging 91 days per year. Principal place of abode rules may also create residence.
**Personal allowances (2025)** - Personal allowance: £15,000 (single person) - Married/civil partnership allowance: £30,000 (joint assessment) - Additional reliefs available for children, mortgage interest on primary residence, pension contributions, private healthcare and long-term care insurance premiums
**What counts as income:** - Employment income (salary, bonus, benefits in kind) - Self-employment profits - Rental income from Guernsey property - Dividends from both Guernsey and overseas companies - Interest (above the de minimis exemption) - Pension income - Foreign income (for residents — worldwide basis)
**What is NOT taxed in Guernsey:** - Capital gains — Guernsey has no capital gains tax whatsoever - Inheritance / estates — no inheritance tax - Stamp duty at the general level (Document Duty applies to property transfers but is not a personal income tax)
**The cap system** High-net-worth individuals may elect for the Standard Charge (formerly 'cap') arrangement. From 2019, residents can elect to pay a fixed annual tax of £50,000 covering all their Guernsey and non-Guernsey income. This is attractive to very high earners. A separate arrangement exists for new high-value residents (those who relocate with significant means) under housing rules.
**Self-assessment** Individuals file an annual Income Tax Return (form IT1 or similar) by 30 November for the prior calendar year. Returns are filed online via the Revenue Service portal. Late filing results in £200 penalty.
**Employer obligations** Employers deduct income tax via the ETI (Employees Tax and Insurance) system — the Guernsey equivalent of PAYE. Monthly returns to the Revenue Service include both tax and social insurance contributions.
Related terms
Guernsey Social Insurance contributions are mandatory payments made by employers and employees that fund the island's social insurance system, including unemployment benefit, sickness benefit, retirement pension, and other social security benefits. Contributions are collected by the States Insurance Authority and remitted via the ETI (Employees Tax and Insurance) monthly return system.
The States of Guernsey Revenue Service (commonly called the Revenue Service or the States Revenue Service) is the government body responsible for administering income tax, document duty, and social insurance contributions in Guernsey. It is the equivalent of HMRC in the UK or the IRS in the US. It issues assessments, collects payments, and enforces compliance.
Guernsey operates a 0% corporate income tax rate for the vast majority of companies. Standard trading companies pay zero corporation tax on profits. Only specific regulated sectors face a 10% rate: banking businesses, domestic insurance licensees, insurance managers/intermediaries, fiduciaries, and fund administrators. The 0% rate is one of Guernsey's primary commercial attractions and applies regardless of the company's level of profit.
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