Moving Abroad: Your UK Tax Guide for the 2026/27 Year

Quick answer

Moving abroad does not automatically end your UK tax. You remain UK tax-resident, and taxable on worldwide income, until the Statutory Residence Test says otherwise. Once you become non-resident, the UK generally taxes only UK-source income, such as rental profit and certain pensions. Split-year treatment may apply in your departure year, and UK property stays within Capital Gains Tax.

How UK residence is decided

The single most important question when you move abroad is whether you are UK tax-resident for the year. Residence is not about your nationality, your passport or where you "feel" you live. It is decided by the Statutory Residence Test (SRT), a structured set of rules that HMRC applies to each tax year, which runs from 6 April to 5 April.

The SRT works in three stages. First, the automatic overseas tests can confirm you are non-resident, for example if you spend very few days in the UK. Second, the automatic UK tests can confirm you are resident, for example if your only home is here. If neither set of automatic tests is conclusive, you fall to the sufficient-ties test, which combines the number of days you spend in the UK with the number of "ties" you have, such as family, available accommodation, UK work and your presence in earlier years.

Because the day thresholds in the SRT depend on your ties and your history, there is no single magic number that applies to everyone. The practical message is simple: count your days carefully, keep evidence, and do not assume that buying a flight makes you non-resident.

Split-year treatment in the year you leave

Most people do not move on 6 April, so their departure falls in the middle of a tax year. Without relief, you could be treated as UK-resident for the whole of that year, taxing income you earned abroad after you left.

Split-year treatment can solve this. It divides the tax year into a UK part and an overseas part, so you are taxed as a resident only for the period before you left and as a non-resident afterwards. It is not automatic and it is not a free choice; you must fall within one of the specific statutory cases, such as starting full-time work overseas or ceasing to have a UK home. If you qualify, income earned in the overseas part is generally outside UK tax, subject to the rules for UK-source income described below.

What stays taxable in the UK after you leave

Becoming non-resident narrows what the UK can tax, but it does not switch it off entirely. The UK retains the right to tax income that arises here. Common examples include:

• Rental profit from UK property.
• Certain UK pensions and similar payments.
• Income from employment duties physically carried out in the UK.
• Profits from a trade carried on through a UK branch.

By contrast, some UK investment income, such as bank interest and dividends, can be covered by the "disregarded income" rules for non-residents, which can cap or remove the UK liability. The interaction with the Personal Allowance, which remains GBP 12,570 and is frozen to April 2028, is technical, so model your position rather than guessing.

A worked example of UK rental income

Suppose you keep a UK flat and let it after you move abroad. The rent stays taxable in the UK. You should register under the Non-resident Landlord Scheme so your agent or tenant does not have to withhold basic-rate tax, then declare the net profit through Self Assessment. The income tax bands for 2026/27 still apply to that profit.

Scotland sets its own income tax bands (19%, 20%, 21%, 42%, 45% and 48%), which can matter if you were Scottish-resident or retain Scottish ties. To estimate the tax on your net rental profit, run the figures through our calculator.

Capital Gains Tax when you emigrate

Capital Gains Tax (CGT) is where many people get caught out. The general rule is that once you are non-resident, you are outside UK CGT on most assets, so selling foreign shares or funds while abroad is typically not a UK event. There are two crucial exceptions.

First, UK land and property remain within UK CGT even for non-residents. Disposing of a UK home or buy-to-let after you leave can still create a UK charge, and non-resident CGT has its own reporting deadlines.

Second, the temporary non-residence rules can claw back gains. In broad terms, if you leave and then return to the UK within roughly five years, certain gains you realised while away can become taxable when you come back. This is designed to stop people stepping out of the UK briefly to crystallise a large gain tax-free.

For 2026/27 the main CGT rates are 18% within the basic-rate band and 24% above it, with an Annual Exempt Amount of GBP 3,000. Business Asset Disposal Relief applies a 18% rate to qualifying disposals. Before selling any UK asset around the time of a move, model the outcome carefully.

National Insurance, the State Pension and ISAs

Leaving the UK can interrupt your National Insurance (NI) record, which feeds directly into your State Pension. The full new State Pension is GBP 241.30 per week for 2026/27, about GBP 12,548 a year, but you need enough qualifying years to receive it.

You can often protect your record with voluntary contributions while abroad. Voluntary Class 3 contributions cost GBP 18.40 per week, which is GBP 956.80 for the year, while some people who were employed or self-employed before leaving can pay cheaper Class 2 voluntary contributions at GBP 3.65 per week. Check your NI record and the number of years you still need before paying anything; topping up is only worthwhile if it actually increases your eventual pension.

ISAs are a common surprise. You can keep an existing ISA and it stays UK tax-free, but you cannot subscribe new money in any tax year you are non-resident. The GBP 20,000 ISA allowance is, in effect, paused. Your new country may also tax the account under its own rules, so the UK tax shelter does not guarantee a foreign one.

Double taxation and your destination country

Becoming non-resident in the UK does not mean you stop paying tax altogether; you will usually become taxable somewhere else. The risk is being taxed twice on the same income. Double taxation agreements between the UK and many countries exist precisely to prevent this. They allocate taxing rights between the two countries and usually grant a credit for tax already paid in the other.

These reliefs are rarely automatic. You generally have to claim them and produce evidence, so keep records of all foreign tax you pay and the income it relates to. Do not assume a treaty exists or that it covers your particular income; check the specific agreement for your destination, and remember that residence rules in your new country are entirely separate from the UK SRT.

Practical steps and a leaving checklist

Getting the admin right around departure protects you from penalties and unexpected bills. A sensible sequence looks like this:

1. Establish your likely residence position under the SRT before you go, and start a day-count diary.
2. Tell HMRC you are leaving, usually via form P85 or through Self Assessment if you already file.
3. Register UK rental property under the Non-resident Landlord Scheme if you are letting it out.
4. Decide whether to make voluntary National Insurance contributions, after checking your record.
5. Inform your ISA and other account providers of your change of residence.
6. Model any planned asset sale, especially UK property, before completing it.

Estimating your numbers

While the residence rules are qualitative, the tax once you know your status is arithmetic. If you will keep UK employment or rental income, the income tax and take-home figures are straightforward to model. If you are weighing up selling a UK asset, the CGT position turns on the rate band and the GBP 3,000 Annual Exempt Amount.

Use the take-home pay calculator to see the effect on any UK earnings you keep, and the income tax tool for rental profit.

Moving abroad can reduce your UK tax, but only when you genuinely become non-resident under the SRT and handle the departure year correctly. Treat residence as the foundation, get the admin done early, and model every number before you act.