One of the most important things to get right when you move to the UK is your tax residency. It takes a little effort to get your head around, but it’s worth getting right to avoid a lot of stress down the road.
Many make the mistake of thinking that because they live here, they’re automatically a UK tax resident. In reality, there’s a little more red tape involved.
Figuring out your tax residency takes a bit of context and forward thinking – but once you’ve nailed it, everything else falls into place. You can stay on the right side of the rules and focus on settling into your new home, knowing your tax position is properly sorted.
We’ve created this guide to explain the UK tax system in a straightforward way so you know where you stand and what’s expected of you.
What Is UK Tax Residency?
If you’ve moved to the UK, tax residency is how HMRC (the UK’s official tax authority) decides how much of your income the UK can tax – including whether overseas income is affected.
It exists to make sure people who live and build a life in the UK contribute fairly, setting clear rules for expats who arrive from abroad or still have financial ties to another country.
How UK Tax Residency Is Decided (Statutory Residence Test)
Your tax status in the UK is worked out using the Statutory Residence Test (SRT). This is the set of rules HMRC applies each tax year to decide whether you count as a UK tax resident.
The SRT mainly focuses on how many days you spend in the UK and how settled your life is here.
The 183-day Rule
You’re automatically a UK tax resident if you:
- Spend 183 days or more in the UK during the tax year
- Have a home in the UK for 91 consecutive days or more (with at least 30 of those days falling in the tax year), and spending at least 30 days there, while either:
- Having no overseas home, or
- Having overseas homes but spending fewer than 30 days in each of them
- Work full-time in the UK for 12 months or more, where most of your working days (over 75%) are spent working in the UK
Note: The UK uses a midnight rule when counting days. A day only counts if you are in the UK at midnight. For example, arriving in the morning and leaving the same night won’t count as a UK day.
If you don’t pass any of the three automatic residency tests outlined above, HMRC then looks at three things to determine your residency.
1. Automatic Overseas Tests
These are the rules HMRC uses to confirm when someone is actually based outside the UK for a tax year.
In most cases, you’ll be classed as non-resident if you spend only a small number of days in the UK, or if your main job and day-to-day life are abroad.
If you meet one of these tests, your tax residency is decided straight away, and you’re treated as non-resident for that year.
2. Automatic UK Tests
If the overseas tests don’t apply, HMRC then looks at whether the UK has effectively become your main base. You’ll usually be treated as UK resident if you cross certain day limits or spend most of your working time here.
In simple terms:
- If you were UK resident in one or more of the previous three tax years, you’ll usually become resident again if you spend 15 days or more in the UK
- If you weren’t UK resident in any of the previous three tax years, the limit increases to 45 days
- If you work full-time abroad (around 35 hours a week for most of the year with no long breaks), you can still remain non-resident as long as:
- You spend no more than 90 days in the UK, and
- You work more than three hours in the UK on fewer than 31 days during the tax year
HMRC also ignores certain days spent in the UK – like those due to circumstances beyond your control – or days where you’re simply passing through in transit.
3. The Sufficient Ties Test
If it’s still unclear whether you’re UK resident, HMRC looks at five specific ties:
Family Tie
Your spouse/unmarried partner or children under 18 live in the UK.
Note: Children won’t usually count as a UK tie if you see them in the UK for fewer than 61 days in the tax year, or if they’re only UK-resident because they’re in full-time education and spend less than 21 days in the UK outside of term time.
Accommodation Tie
You have somewhere to live in the UK that’s available for a continuous period of at least 91 days.
This tie is triggered if you stay there for at least one night during the tax year (this is known as the one-night test).
If the accommodation belongs to a close relative, the rule is stricter. You’ll need to stay there for 16 nights or more in the tax year for the tie to apply.
Note: You don’t need to own the property for this to count. It can include rented homes, holiday properties, or even regular hotel stays.
Work Tie
You work in the UK for 40 days or more (with at least 3 hours of work per day)
90-day Tie
You spent more than 90 days in the UK in either of the previous two tax years
Country Tie
You spend more time in the UK than in any other single country (this only applies if you’ve recently left the UK)
In simple terms, the more days you spend in the UK, and the stronger your ties are, the more likely you are to be classed as a UK tax resident.
Non-residents
You’ll usually not be treated as UK-resident if:
- You spent less than 16 days in the UK (or less than 46 days if you haven’t been a UK resident in the last 3 tax years), and you have fewer than four sufficient ties under the Statutory Residence Test.
- You worked abroad full-time (around 35 hours a week) throughout the tax year, without a break of more than 30 days (aside from normal holiday, sick, or parental leave). You must also have spent fewer than 90 days in the UK, with no more than 30 of those days involving more than three hours of work in the UK.
What Happens If You’re Classed as a UK Tax Resident?
The UK generally has the right to tax your income and require you to pay income tax on earnings from anywhere in the world. For example:
- UK income: Salary, bonuses, self-employed income, pensions, or rental income from UK property
-
Overseas income: Foreign salary, overseas pensions, rental income from property abroad, dividends, interest, and investment profits
Together, this is known as being taxed on your worldwide income.
If you’re a UK resident for tax purposes, you’ll generally need to:
- Report overseas income on your UK tax return
- Keep records of tax paid abroad
- Claim double tax relief where applicable
How to Avoid Paying Tax Twice as a UK Dual Resident
If you have UK tax residence status and also earn income overseas, a common concern is being taxed twice – once in the foreign country and again in the UK. In most cases, the UK tax authorities have systems in place to prevent this.
4-Year Foreign Income and Gains (FIG) Regime
If you’ve been a non-UK tax resident for at least 10 consecutive tax years before arriving, you may be able to claim 100% relief on foreign income and gains for your first 4 years of residency. That means you won’t pay UK tax on those specific foreign earnings at all during that window.
To use the FIG regime, you must actively claim it through your tax return and clearly list (nominate) each source of foreign income and gains you want covered. Income and gains are claimed separately. It isn’t automatic or blanket relief.
It’s also important to keep in mind that when you choose the FIG regime you give up your usual UK tax-free allowances, including the Personal Allowance for income tax and the annual Capital Gains Tax exemption.
Double Taxation Agreements (DTAs)
The UK has one of the world’s largest networks of tax treaties (over 130 countries). These act as the rulebook for which country gets the first slice of the tax pie.
- Primary Rights: Who gets first dibs on your taxes. For example, rental income is almost always taxed in the country where the property is located first.
- Tie-Breaker Rules: If both countries claim you as a resident, the treaty has tie-breaker tests (like where your permanent home or centre of vital interests is) to decide which country’s rules take precedence.
Double Taxation Relief
Where overseas tax has already been paid, HMRC usually allows you to offset that foreign tax against your UK tax bill on the same income.
- The Rule: You can only claim relief up to the amount of UK tax you would have paid on that same income. If the UK tax rate is higher, you’ll still need to pay the difference.
- Example: If you paid 30% tax on dividends in a foreign country, but the UK tax rate for those dividends is only 20%, HMRC will only give you a credit of 20%. You won’t get a refund for the extra 10% you paid abroad.
What if there is no treaty?
If you earn income in a country that doesn’t have a treaty with the UK (e.g. Brazil), you aren’t necessarily stuck. The UK offers Unilateral Relief, which works similarly to treaty relief, allowing you to credit foreign tax against your UK bill to avoid double taxation.
Need Help Getting Your UK Tax Position Right?
We’re specialist tax professionals who help new arrivals to the UK understand their tax residency and obligations.
We explain exactly how much tax you owe, which rates apply to your income, and when key deadlines fall. We also handle the practical side of submitting your tax returns correctly and on time.
Most importantly, we make sure you’re claiming every relief and tax advantage available to you as a resident in the UK, helping you stay fully compliant while never paying more tax than you need to.
If you want peace of mind and expert support as you settle into life in the UK, book a consultation with Expat Taxes.
By booking a consultation, you’ll receive a £100 credit that can be applied to any future services – including UK tax return preparation – so you can start saving straight away.
DISCLAIMER: The material in this article is for general information purposes only and does not constitute legal or taxation advice. Legal, financial, investment and taxation advice should be sought before acting or refraining from acting. All information and taxation rules are subject to change without notice. Expattaxes.co.uk Limited accept no liability for any action taken based on the information in this article or any of the articles on this website.
