UK Tax When Moving to Switzerland

After you move to Switzerland you are still UK tax resident until you genuinely break UK residence under the Statutory Residence Test (SRT). The SRT, set out in HMRC's RDR3 guidance (last updated 11 June 2026), is the only basis for deciding this. Moving abroad, taking a Swiss residence permit or buying a Swiss home does not by itself make you UK non-resident; the SRT does.

The SRT works in three stages. The automatic overseas tests can make you non-resident outright, for example if you spend fewer than 16 days in the UK in the tax year, or if you work full-time abroad with limited UK days. If none of those apply, the automatic UK tests can make you resident, for example by spending 183 days or more in the UK. If neither set is conclusive, the sufficient ties test combines your UK days with ties such as family, accommodation, work and time spent here in earlier years.

Since the April 2025 abolition of the domicile and remittance basis (further refined in the Spring 2026 Budget), residence under the SRT and the UK-Switzerland double tax treaty drives almost the entire outcome. Getting your day count and ties right is now the single most important planning step, so work through the SRT carefully before you go.

If you move to Switzerland part-way through a UK tax year, split-year treatment can let you be taxed as UK-resident only up to your departure and as non-resident for the rest of that year, rather than being treated as UK-resident for the whole year. This often reduces UK tax on Swiss earnings and other foreign income arising after you leave.

Split-year treatment is not optional or discretionary; you either meet one of the statutory cases or you do not. For someone leaving the UK, the most common routes are the case for starting full-time work overseas and the case for ceasing to have a home in the UK. Each case has strict conditions on UK days, the timing of your move and whether you retain a UK home, so the cases must be tested against your actual facts.

Even in a split year, the overseas part is not a complete shield. UK-source income such as rental profits remains taxable, and the 5-year temporary non-residence rule can still apply. You claim split-year treatment through your Self Assessment return using the SA109 residence pages.

The temporary non-residence rule is the trap most people moving abroad overlook. If you were UK-resident (with sole UK residence) for the whole or part of at least 4 of the 7 tax years before you left, and your period of non-residence is 5 years or less, then certain gains and income you realise while away are taxed in the UK in the year you return.

It catches gains on assets you held before departure and sold while non-resident, so selling a share portfolio from Switzerland to crystallise a gain does not escape UK Capital Gains Tax if you come back within the window. It also catches certain income taken during the absence, including some pension lump sums and drawdown and distributions from close companies. These amounts are brought into UK charge in the tax year your UK residence resumes.

The practical message is simple: if you might return to the UK within 5 years, treat disposals and large pension or dividend extractions made while away as potentially still UK-taxable, and plan the timing accordingly. A genuine, long-term move that runs beyond 5 years takes you outside the rule for these purposes.

Becoming non-resident does not switch off UK tax on UK-source income and on UK property. The table below summarises the items that most commonly continue to be UK-taxable after you become non-resident, and the one category that generally falls out of UK tax once you are non-resident (subject to the temporary non-residence rule).

Each of these is covered in more detail below. The treaty between the UK and Switzerland (the 1977 convention, in force since 1978 and most recently amended by a protocol that entered into force in July 2019) then determines which country has the final taxing right and how double tax is relieved.

If you keep a UK rental property, the rental profit stays UK-taxable for as long as you own and let it, regardless of where you live. UK property income is taxed in the UK by reference to the property's location, not your residence. You report it through UK Self Assessment each year and pay any UK Income Tax due.

The Non-Resident Landlord Scheme governs how the tax is collected. By default, your letting agent (or the tenant, if there is no agent and the rent is above the threshold) must deduct basic-rate tax from the rent and pay it to HMRC. To receive your rent gross and settle the tax yourself through Self Assessment, apply to HMRC using form NRL1 (NRL2 for companies, NRL3 for trustees). Approval does not exempt the income; it simply moves collection into your annual return.

Switzerland, as your country of residence, will generally also bring your worldwide income (including UK rent) into its own assessment, with relief for the UK tax under the treaty. The Swiss mechanics vary by canton, so confirm the Swiss treatment locally.

Gains on UK property remain UK-taxable even after you become non-resident, under the non-resident Capital Gains Tax (NRCGT) rules. These apply to direct disposals of UK residential and commercial property and land, and to certain indirect disposals, for example shares in property-rich entities.

For UK residential property, a non-resident must report the disposal and pay the Capital Gains Tax due within 60 days of completion, using HMRC's online UK property disposal return. This deadline applies whether or not there is tax to pay and is separate from your annual Self Assessment. Only the gain since April 2015 (for residential property held before then) is typically chargeable, and you may be able to use rebasing or a time-apportionment method to compute it.

If the property was once your main home, Private Residence Relief may reduce the gain, but the rules on the final period and on overseas owners are detailed. Switzerland will look at the disposal under its own rules too, with treaty relief available, so model both sides before you sell.

UK pensions are not automatically UK-taxed once you live in Switzerland; the answer depends on the type of pension and what the treaty says. A blanket statement that UK pensions always stay UK-taxable is too strong for a Swiss resident.

Broadly, UK government-service pensions (for example certain public-sector or civil-service schemes) generally remain taxable in the UK under Article 19 of the treaty, unless you are a Swiss national resident in Switzerland, in which case they too become taxable only in Switzerland. By contrast, the UK-Switzerland treaty generally gives Switzerland, as the country of residence, the right to tax private and occupational UK pensions and the UK State Pension paid to a Swiss resident, under Article 18. Where Switzerland has the taxing right, you can usually apply for the UK pension to be paid without UK tax deducted, claiming relief at source under the treaty using the Switzerland/Individual form.

Because the allocation turns on the precise pension type and treaty wording, take advice before drawing UK pension benefits after your move, and remember that drawdown or lump sums taken while temporarily non-resident can be pulled back into UK tax under the 5-year rule.

This section is indicative only and must be confirmed with a Swiss adviser. Switzerland taxes individuals at three levels: federal, cantonal and communal. Because the cantons and communes set much of the rate, the overall burden varies substantially depending on where in Switzerland you live.

Two features are worth knowing about in outline. First, Switzerland levies a wealth tax at cantonal and communal level (there is no federal wealth tax) on worldwide net assets above a personal allowance, with rates that are modest but real and vary by canton. Second, some cantons offer expenditure-based lump-sum taxation (also called the forfait fiscal), under which tax is based on your living expenses rather than your actual worldwide income, for foreign nationals taking up Swiss residence who are not gainfully employed in Switzerland.

Lump-sum taxation has been abolished at cantonal level in some cantons, including Zurich, Basel-Stadt, Basel-Landschaft, Schaffhausen and Appenzell Ausserrhoden, while cantons such as Vaud, Valais, Geneva, Ticino and several central cantons still offer it. This is politically live and can change, and the minimum tax base is negotiated with the cantonal authority, so do not rely on any specific figure or availability without checking the position for your target canton.

This is a simplified illustration to show the mechanics, not advice, and it ignores reliefs and the annual exempt amount for clarity.

Anna has lived in the UK for the last 10 tax years, so she easily meets the test of being UK-resident in at least 4 of the 7 years before departure. She moves to Geneva on 1 July 2026 and qualifies for split-year treatment, so she is taxed as UK-resident to 30 June 2026 and non-resident afterwards. In March 2028, while living in Switzerland, she sells a share portfolio she bought in 2019 and realises a gain of 100,000 pounds.

• Because the shares are a foreign asset (not UK land), a permanently non-resident person would normally pay no UK Capital Gains Tax on the disposal.
• But Anna returns to the UK in September 2030, so her period of non-residence is about 4 years and 3 months, which is 5 years or less.
• She held the shares before departure and disposed of them while non-resident, so the 5-year temporary non-residence rule applies.
• The 100,000 pound gain is therefore brought into UK Capital Gains Tax in the tax year she returns (2030/31), as if she had realised it on her return.
• If instead she had stayed abroad for more than 5 years, or had bought the shares after leaving, the rule would not have caught this gain.

The lesson is that crystallising gains on pre-owned assets while temporarily abroad does not avoid UK tax if you return within the window. Anyone planning a sale during a Swiss posting that may last under 5 years should take advice on timing first.

Working through the steps below before you leave makes your UK position cleaner and reduces the risk of double tax or missed deadlines.

• Run the Statutory Residence Test for your departure year and your first full year abroad, and keep a contemporaneous record of your UK days and ties.
• Check whether you qualify for split-year treatment and identify which statutory case applies to your move.
• Assess the 5-year temporary non-residence rule against any likely disposals, pension drawdown or company distributions, and plan their timing.
• File form P85 to tell HMRC you are leaving, and complete a Self Assessment return with the SA109 residence pages for your departure year.
• If you are keeping a UK rental property, apply under NRL1 to receive rent gross and continue reporting the income through Self Assessment.
• Diarise the 60-day reporting and payment deadline for any UK residential property you may sell after leaving.
• Take advice on your UK pensions before drawing benefits or considering a QROPS transfer, given the treaty and the Overseas Transfer Charge.
• Engage a Swiss adviser early to confirm your canton's rules on income tax, wealth tax and any lump-sum option, and to align both tax years.
• Keep evidence of your move (tenancy or purchase, employment, family relocation) to support your non-resident position if HMRC asks.